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authorAndrew Tridgell <tridge@samba.org>2007-04-21 07:23:42 +0000
committerGerald (Jerry) Carter <jerry@samba.org>2007-10-10 14:51:17 -0500
commit650d81b252cc669ef848448afad7e9bb79c4f20e (patch)
tree7108ada18c4d7fff581470791832850c17eab6bf
parent66a9f1e2764900a2c22a4bfad9f9caf3db729385 (diff)
downloadsamba-650d81b252cc669ef848448afad7e9bb79c4f20e.tar.gz
samba-650d81b252cc669ef848448afad7e9bb79c4f20e.tar.bz2
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r22421: merged in latest ctdb changes from bzr
(This used to be commit 3633f862b966866819c9a0a6ad0238a858e15e62)
-rw-r--r--source4/cluster/ctdb/Makefile.in36
-rw-r--r--source4/cluster/ctdb/brlock_ctdb.c2
-rw-r--r--source4/cluster/ctdb/common/cmdline.c142
-rw-r--r--source4/cluster/ctdb/common/ctdb.c136
-rw-r--r--source4/cluster/ctdb/common/ctdb_call.c265
-rw-r--r--source4/cluster/ctdb/common/ctdb_client.c612
-rw-r--r--source4/cluster/ctdb/common/ctdb_daemon.c500
-rw-r--r--source4/cluster/ctdb/common/ctdb_lockwait.c139
-rw-r--r--source4/cluster/ctdb/common/ctdb_ltdb.c144
-rw-r--r--source4/cluster/ctdb/common/ctdb_message.c17
-rw-r--r--source4/cluster/ctdb/common/ctdb_util.c28
-rw-r--r--source4/cluster/ctdb/config.mk3
-rw-r--r--source4/cluster/ctdb/ctdb_cluster.c69
-rw-r--r--source4/cluster/ctdb/direct/ctdbd.c51
-rwxr-xr-xsource4/cluster/ctdb/direct/ctdbd.sh4
-rw-r--r--source4/cluster/ctdb/direct/ctdbd_test.c92
-rw-r--r--source4/cluster/ctdb/ib/ibw_ctdb_init.c4
-rw-r--r--source4/cluster/ctdb/include/cmdline.h7
-rw-r--r--source4/cluster/ctdb/include/ctdb.h51
-rw-r--r--source4/cluster/ctdb/include/ctdb_private.h147
-rw-r--r--source4/cluster/ctdb/include/includes.h7
-rw-r--r--source4/cluster/ctdb/opendb_ctdb.c6
-rw-r--r--source4/cluster/ctdb/tcp/tcp_connect.c4
-rw-r--r--source4/cluster/ctdb/tcp/tcp_init.c10
-rwxr-xr-xsource4/cluster/ctdb/tests/bench.sh6
-rwxr-xr-xsource4/cluster/ctdb/tests/bench1.sh3
-rw-r--r--source4/cluster/ctdb/tests/ctdb_bench.c51
-rw-r--r--source4/cluster/ctdb/tests/ctdb_fetch.c26
-rw-r--r--source4/cluster/ctdb/tests/ctdb_fetch1.c97
-rw-r--r--source4/cluster/ctdb/tests/ctdb_messaging.c7
-rw-r--r--source4/cluster/ctdb/tests/ctdb_test.c13
-rwxr-xr-xsource4/cluster/ctdb/tests/fetch.sh12
-rwxr-xr-xsource4/cluster/ctdb/tests/fetch1.sh5
-rw-r--r--source4/cluster/ctdb/tests/lockwait.c245
-rwxr-xr-xsource4/cluster/ctdb/tests/messaging.sh3
-rwxr-xr-xsource4/cluster/ctdb/tests/test.sh40
-rwxr-xr-xsource4/cluster/ctdb/tests/test1.sh7
-rw-r--r--source4/cluster/ctdb/tools/ctdb_status.c133
38 files changed, 2020 insertions, 1104 deletions
diff --git a/source4/cluster/ctdb/Makefile.in b/source4/cluster/ctdb/Makefile.in
index 175418aa99..adc1f92d0a 100644
--- a/source4/cluster/ctdb/Makefile.in
+++ b/source4/cluster/ctdb/Makefile.in
@@ -21,8 +21,8 @@ LIB_FLAGS=@LDFLAGS@ -Llib @LIBS@ -lpopt @INFINIBAND_LIBS@
EVENTS_OBJ = lib/events/events.o lib/events/events_standard.o
CTDB_COMMON_OBJ = common/ctdb.o common/ctdb_daemon.o common/ctdb_client.o common/ctdb_io.o common/util.o common/ctdb_util.o \
- common/ctdb_call.o common/ctdb_ltdb.o common/ctdb_message.o \
- lib/util/idtree.o lib/util/db_wrap.o
+ common/ctdb_call.o common/ctdb_ltdb.o common/ctdb_lockwait.o common/ctdb_message.o \
+ common/cmdline.o lib/util/idtree.o lib/util/db_wrap.o lib/util/debug.o
CTDB_TCP_OBJ = tcp/tcp_connect.o tcp/tcp_io.o tcp/tcp_init.o
@@ -30,7 +30,7 @@ CTDB_OBJ = $(CTDB_COMMON_OBJ) $(CTDB_TCP_OBJ)
OBJS = @TDBOBJ@ @TALLOCOBJ@ @LIBREPLACEOBJ@ @INFINIBAND_WRAPPER_OBJ@ $(EXTRA_OBJ) $(EVENTS_OBJ) $(CTDB_OBJ)
-BINS = bin/ctdbd bin/ctdbd_test bin/ctdb_test bin/ctdb_bench bin/ctdb_messaging bin/ctdb_fetch bin/ctdb_fetch1 @INFINIBAND_BINS@
+BINS = bin/ctdbd bin/ctdbd_test bin/ctdb_test bin/ctdb_bench bin/ctdb_messaging bin/ctdb_fetch bin/ctdb_fetch1 bin/lockwait bin/ctdb_status @INFINIBAND_BINS@
DIRS = lib bin
@@ -49,38 +49,46 @@ showflags:
dirs:
@mkdir -p $(DIRS)
-bin/ctdb_test: $(OBJS) tests/ctdb_test.o tests/cmdline.o
+bin/ctdb_test: $(OBJS) tests/ctdb_test.o
@echo Linking $@
- @$(CC) $(CFLAGS) -o $@ tests/ctdb_test.o tests/cmdline.o $(OBJS) $(LIB_FLAGS)
+ @$(CC) $(CFLAGS) -o $@ tests/ctdb_test.o $(OBJS) $(LIB_FLAGS)
-bin/ctdbd: $(OBJS) direct/ctdbd.o
+bin/ctdbd: $(OBJS) direct/ctdbd.o
@echo Linking $@
@$(CC) $(CFLAGS) -o $@ direct/ctdbd.o $(OBJS) $(LIB_FLAGS)
+bin/ctdb_status: $(OBJS) tools/ctdb_status.o
+ @echo Linking $@
+ @$(CC) $(CFLAGS) -o $@ tools/ctdb_status.o $(OBJS) $(LIB_FLAGS)
+
bin/ctdbd_test: $(OBJS) direct/ctdbd_test.o
@echo Linking $@
@$(CC) $(CFLAGS) -o $@ direct/ctdbd_test.o
-bin/ctdb_bench: $(OBJS) tests/ctdb_bench.o tests/cmdline.o
+bin/ctdb_bench: $(OBJS) tests/ctdb_bench.o
@echo Linking $@
- @$(CC) $(CFLAGS) -o $@ tests/ctdb_bench.o tests/cmdline.o $(OBJS) $(LIB_FLAGS)
+ @$(CC) $(CFLAGS) -o $@ tests/ctdb_bench.o $(OBJS) $(LIB_FLAGS)
-bin/ctdb_fetch: $(OBJS) tests/ctdb_fetch.o tests/cmdline.o
+bin/ctdb_fetch: $(OBJS) tests/ctdb_fetch.o
@echo Linking $@
- @$(CC) $(CFLAGS) -o $@ tests/ctdb_fetch.o tests/cmdline.o $(OBJS) $(LIB_FLAGS)
+ @$(CC) $(CFLAGS) -o $@ tests/ctdb_fetch.o $(OBJS) $(LIB_FLAGS)
-bin/ctdb_fetch1: $(OBJS) tests/ctdb_fetch1.o tests/cmdline.o
+bin/ctdb_fetch1: $(OBJS) tests/ctdb_fetch1.o
@echo Linking $@
- @$(CC) $(CFLAGS) -o $@ tests/ctdb_fetch1.o tests/cmdline.o $(OBJS) $(LIB_FLAGS)
+ @$(CC) $(CFLAGS) -o $@ tests/ctdb_fetch1.o $(OBJS) $(LIB_FLAGS)
-bin/ctdb_messaging: $(OBJS) tests/ctdb_messaging.o tests/cmdline.o
+bin/ctdb_messaging: $(OBJS) tests/ctdb_messaging.o
@echo Linking $@
- @$(CC) $(CFLAGS) -o $@ tests/ctdb_messaging.o tests/cmdline.o $(OBJS) $(LIB_FLAGS)
+ @$(CC) $(CFLAGS) -o $@ tests/ctdb_messaging.o $(OBJS) $(LIB_FLAGS)
bin/ibwrapper_test: $(OBJS) ib/ibwrapper_test.o
@echo Linking $@
@$(CC) $(CFLAGS) -o $@ ib/ibwrapper_test.o $(OBJS) $(LIB_FLAGS)
+bin/lockwait: $(OBJS) tests/lockwait.o
+ @echo Linking $@
+ @$(CC) $(CFLAGS) -o $@ tests/lockwait.o $(OBJS) $(LIB_FLAGS)
+
clean:
rm -f *.o */*.o */*/*.o
rm -f $(BINS)
diff --git a/source4/cluster/ctdb/brlock_ctdb.c b/source4/cluster/ctdb/brlock_ctdb.c
index b1e8e64d40..2773827b59 100644
--- a/source4/cluster/ctdb/brlock_ctdb.c
+++ b/source4/cluster/ctdb/brlock_ctdb.c
@@ -389,6 +389,8 @@ static NTSTATUS brl_ctdb_lock(struct brl_context *brl,
call.key.dsize = brlh->key.length;
call.call_data.dptr = (uint8_t *)&req;
call.call_data.dsize = sizeof(req);
+ call.flags = 0;
+ call.status = 0;
ZERO_STRUCT(req);
req.smbpid = smbpid;
diff --git a/source4/cluster/ctdb/common/cmdline.c b/source4/cluster/ctdb/common/cmdline.c
new file mode 100644
index 0000000000..699cb8fb22
--- /dev/null
+++ b/source4/cluster/ctdb/common/cmdline.c
@@ -0,0 +1,142 @@
+/*
+ common commandline code to ctdb test tools
+
+ Copyright (C) Andrew Tridgell 2007
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2 of the License, or (at your option) any later version.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+*/
+
+#include "includes.h"
+#include "lib/events/events.h"
+#include "system/filesys.h"
+#include "popt.h"
+#include "../include/ctdb.h"
+#include "../include/ctdb_private.h"
+
+/* Handle common command line options for ctdb test progs
+ */
+
+static struct {
+ const char *nlist;
+ const char *transport;
+ const char *myaddress;
+ int self_connect;
+ const char *db_dir;
+ int torture;
+} ctdb_cmdline = {
+ .nlist = NULL,
+ .transport = "tcp",
+ .myaddress = NULL,
+ .self_connect = 0,
+ .db_dir = NULL,
+ .torture = 0
+};
+
+
+struct poptOption popt_ctdb_cmdline[] = {
+ { "nlist", 0, POPT_ARG_STRING, &ctdb_cmdline.nlist, 0, "node list file", "filename" },
+ { "listen", 0, POPT_ARG_STRING, &ctdb_cmdline.myaddress, 0, "address to listen on", "address" },
+ { "transport", 0, POPT_ARG_STRING, &ctdb_cmdline.transport, 0, "protocol transport", NULL },
+ { "self-connect", 0, POPT_ARG_NONE, &ctdb_cmdline.self_connect, 0, "enable self connect", "boolean" },
+ { "debug", 'd', POPT_ARG_INT, &LogLevel, 0, "debug level"},
+ { "dbdir", 0, POPT_ARG_STRING, &ctdb_cmdline.db_dir, 0, "directory for the tdb files", NULL },
+ { "torture", 0, POPT_ARG_NONE, &ctdb_cmdline.torture, 0, "enable nastiness in library", NULL },
+ { NULL }
+};
+
+
+/*
+ startup daemon side of ctdb according to command line options
+ */
+struct ctdb_context *ctdb_cmdline_init(struct event_context *ev)
+{
+ struct ctdb_context *ctdb;
+ int ret;
+
+ if (ctdb_cmdline.nlist == NULL || ctdb_cmdline.myaddress == NULL) {
+ printf("You must provide a node list with --nlist and an address with --listen\n");
+ exit(1);
+ }
+
+ /* initialise ctdb */
+ ctdb = ctdb_init(ev);
+ if (ctdb == NULL) {
+ printf("Failed to init ctdb\n");
+ exit(1);
+ }
+
+ if (ctdb_cmdline.self_connect) {
+ ctdb_set_flags(ctdb, CTDB_FLAG_SELF_CONNECT);
+ }
+ if (ctdb_cmdline.torture) {
+ ctdb_set_flags(ctdb, CTDB_FLAG_TORTURE);
+ }
+
+ ret = ctdb_set_transport(ctdb, ctdb_cmdline.transport);
+ if (ret == -1) {
+ printf("ctdb_set_transport failed - %s\n", ctdb_errstr(ctdb));
+ exit(1);
+ }
+
+ /* tell ctdb what address to listen on */
+ ret = ctdb_set_address(ctdb, ctdb_cmdline.myaddress);
+ if (ret == -1) {
+ printf("ctdb_set_address failed - %s\n", ctdb_errstr(ctdb));
+ exit(1);
+ }
+
+ /* tell ctdb what nodes are available */
+ ret = ctdb_set_nlist(ctdb, ctdb_cmdline.nlist);
+ if (ret == -1) {
+ printf("ctdb_set_nlist failed - %s\n", ctdb_errstr(ctdb));
+ exit(1);
+ }
+
+ ret = ctdb_set_tdb_dir(ctdb, ctdb_cmdline.db_dir);
+ if (ret == -1) {
+ printf("ctdb_set_tdb_dir failed - %s\n", ctdb_errstr(ctdb));
+ exit(1);
+ }
+
+ return ctdb;
+}
+
+
+/*
+ startup a client only ctdb context
+ */
+struct ctdb_context *ctdb_cmdline_client(struct event_context *ev, const char *ctdb_socket)
+{
+ struct ctdb_context *ctdb;
+ int ret;
+
+ /* initialise ctdb */
+ ctdb = ctdb_init(ev);
+ if (ctdb == NULL) {
+ printf("Failed to init ctdb\n");
+ exit(1);
+ }
+
+ ctdb->daemon.name = talloc_strdup(ctdb, ctdb_socket);
+
+ ret = ctdb_socket_connect(ctdb);
+ if (ret != 0) {
+ DEBUG(0,(__location__ " Failed to connect to daemon\n"));
+ talloc_free(ctdb);
+ return NULL;
+ }
+
+ return ctdb;
+}
diff --git a/source4/cluster/ctdb/common/ctdb.c b/source4/cluster/ctdb/common/ctdb.c
index 8a8d52f3f1..6bd2fda529 100644
--- a/source4/cluster/ctdb/common/ctdb.c
+++ b/source4/cluster/ctdb/common/ctdb.c
@@ -74,6 +74,22 @@ void ctdb_set_max_lacount(struct ctdb_context *ctdb, unsigned count)
}
/*
+ set the directory for the local databases
+*/
+int ctdb_set_tdb_dir(struct ctdb_context *ctdb, const char *dir)
+{
+ if (dir == NULL) {
+ ctdb->db_directory = talloc_asprintf(ctdb, "ctdb-%u", ctdb_get_vnn(ctdb));
+ } else {
+ ctdb->db_directory = talloc_strdup(ctdb, dir);
+ }
+ if (ctdb->db_directory == NULL) {
+ return -1;
+ }
+ return 0;
+}
+
+/*
add a node to the list of active nodes
*/
static int ctdb_add_node(struct ctdb_context *ctdb, char *nstr)
@@ -190,65 +206,102 @@ uint32_t ctdb_get_num_nodes(struct ctdb_context *ctdb)
/*
called by the transport layer when a packet comes in
*/
-static void ctdb_recv_pkt(struct ctdb_context *ctdb, uint8_t *data, uint32_t length)
+void ctdb_recv_pkt(struct ctdb_context *ctdb, uint8_t *data, uint32_t length)
{
- struct ctdb_req_header *hdr;
+ struct ctdb_req_header *hdr = (struct ctdb_req_header *)data;
+ TALLOC_CTX *tmp_ctx;
+
+ ctdb->status.node_packets_recv++;
+
+ /* place the packet as a child of the tmp_ctx. We then use
+ talloc_free() below to free it. If any of the calls want
+ to keep it, then they will steal it somewhere else, and the
+ talloc_free() will only free the tmp_ctx */
+ tmp_ctx = talloc_new(ctdb);
+ talloc_steal(tmp_ctx, hdr);
if (length < sizeof(*hdr)) {
ctdb_set_error(ctdb, "Bad packet length %d\n", length);
- return;
+ goto done;
}
- hdr = (struct ctdb_req_header *)data;
if (length != hdr->length) {
ctdb_set_error(ctdb, "Bad header length %d expected %d\n",
hdr->length, length);
- return;
+ goto done;
}
if (hdr->ctdb_magic != CTDB_MAGIC) {
ctdb_set_error(ctdb, "Non CTDB packet rejected\n");
- return;
+ goto done;
}
if (hdr->ctdb_version != CTDB_VERSION) {
ctdb_set_error(ctdb, "Bad CTDB version 0x%x rejected\n", hdr->ctdb_version);
- return;
+ goto done;
}
+ DEBUG(3,(__location__ " ctdb request %d of type %d length %d from "
+ "node %d to %d\n", hdr->reqid, hdr->operation, hdr->length,
+ hdr->srcnode, hdr->destnode));
+
switch (hdr->operation) {
case CTDB_REQ_CALL:
+ ctdb->status.count.req_call++;
ctdb_request_call(ctdb, hdr);
break;
case CTDB_REPLY_CALL:
+ ctdb->status.count.reply_call++;
ctdb_reply_call(ctdb, hdr);
break;
case CTDB_REPLY_ERROR:
+ ctdb->status.count.reply_error++;
ctdb_reply_error(ctdb, hdr);
break;
case CTDB_REPLY_REDIRECT:
+ ctdb->status.count.reply_redirect++;
ctdb_reply_redirect(ctdb, hdr);
break;
case CTDB_REQ_DMASTER:
+ ctdb->status.count.req_dmaster++;
ctdb_request_dmaster(ctdb, hdr);
break;
case CTDB_REPLY_DMASTER:
+ ctdb->status.count.reply_dmaster++;
ctdb_reply_dmaster(ctdb, hdr);
break;
case CTDB_REQ_MESSAGE:
+ ctdb->status.count.req_message++;
ctdb_request_message(ctdb, hdr);
break;
+ case CTDB_REQ_FINISHED:
+ ctdb->status.count.req_finished++;
+ ctdb_request_finished(ctdb, hdr);
+ break;
+
default:
- printf("Packet with unknown operation %d\n", hdr->operation);
+ DEBUG(0,("%s: Packet with unknown operation %d\n",
+ __location__, hdr->operation));
break;
}
- talloc_free(hdr);
+
+done:
+ talloc_free(tmp_ctx);
+}
+
+/*
+ called by the transport layer when a packet comes in
+*/
+void ctdb_recv_raw_pkt(void *p, uint8_t *data, uint32_t length)
+{
+ struct ctdb_context *ctdb = talloc_get_type(p, struct ctdb_context);
+ ctdb_recv_pkt(ctdb, data, length);
}
/*
@@ -257,8 +310,8 @@ static void ctdb_recv_pkt(struct ctdb_context *ctdb, uint8_t *data, uint32_t len
static void ctdb_node_dead(struct ctdb_node *node)
{
node->ctdb->num_connected--;
- printf("%s: node %s is dead: %d connected\n",
- node->ctdb->name, node->name, node->ctdb->num_connected);
+ DEBUG(1,("%s: node %s is dead: %d connected\n",
+ node->ctdb->name, node->name, node->ctdb->num_connected));
}
/*
@@ -267,8 +320,8 @@ static void ctdb_node_dead(struct ctdb_node *node)
static void ctdb_node_connected(struct ctdb_node *node)
{
node->ctdb->num_connected++;
- printf("%s: connected to %s - %d connected\n",
- node->ctdb->name, node->name, node->ctdb->num_connected);
+ DEBUG(1,("%s: connected to %s - %d connected\n",
+ node->ctdb->name, node->name, node->ctdb->num_connected));
}
/*
@@ -281,33 +334,62 @@ void ctdb_daemon_connect_wait(struct ctdb_context *ctdb)
expected++;
}
while (ctdb->num_connected != expected) {
+ DEBUG(3,("ctdb_connect_wait: waiting for %d nodes (have %d)\n",
+ expected, ctdb->num_connected));
event_loop_once(ctdb->ev);
}
+ DEBUG(3,("ctdb_connect_wait: got all %d nodes\n", expected));
}
+struct queue_next {
+ struct ctdb_context *ctdb;
+ struct ctdb_req_header *hdr;
+};
+
+
/*
- wait until we're the only node left
-*/
-void ctdb_wait_loop(struct ctdb_context *ctdb)
+ trigered when a deferred packet is due
+ */
+static void queue_next_trigger(struct event_context *ev, struct timed_event *te,
+ struct timeval t, void *private_data)
{
- int expected = 0;
- if (ctdb->flags & CTDB_FLAG_SELF_CONNECT) {
- expected++;
+ struct queue_next *q = talloc_get_type(private_data, struct queue_next);
+ ctdb_recv_pkt(q->ctdb, (uint8_t *)q->hdr, q->hdr->length);
+ talloc_free(q);
+}
+
+/*
+ defer a packet, so it is processed on the next event loop
+ this is used for sending packets to ourselves
+ */
+static void ctdb_defer_packet(struct ctdb_context *ctdb, struct ctdb_req_header *hdr)
+{
+ struct queue_next *q;
+ q = talloc(ctdb, struct queue_next);
+ if (q == NULL) {
+ DEBUG(0,(__location__ " Failed to allocate deferred packet\n"));
+ return;
}
- while (ctdb->num_connected > expected) {
- event_loop_once(ctdb->ev);
+ q->ctdb = ctdb;
+ q->hdr = talloc_memdup(ctdb, hdr, hdr->length);
+ if (q->hdr == NULL) {
+ DEBUG(0,("Error copying deferred packet to self\n"));
+ return;
}
+ event_add_timed(ctdb->ev, q, timeval_zero(), queue_next_trigger, q);
}
-
/*
queue a packet or die
*/
void ctdb_queue_packet(struct ctdb_context *ctdb, struct ctdb_req_header *hdr)
{
struct ctdb_node *node;
+ ctdb->status.node_packets_sent++;
node = ctdb->nodes[hdr->destnode];
- if (ctdb->methods->queue_pkt(node, (uint8_t *)hdr, hdr->length) != 0) {
+ if (hdr->destnode == ctdb->vnn && !(ctdb->flags & CTDB_FLAG_SELF_CONNECT)) {
+ ctdb_defer_packet(ctdb, hdr);
+ } else if (ctdb->methods->queue_pkt(node, (uint8_t *)hdr, hdr->length) != 0) {
ctdb_fatal(ctdb, "Unable to queue packet\n");
}
}
@@ -338,11 +420,3 @@ struct ctdb_context *ctdb_init(struct event_context *ev)
return ctdb;
}
-int ctdb_start(struct ctdb_context *ctdb)
-{
- if (ctdb->flags&CTDB_FLAG_DAEMON_MODE) {
- return ctdbd_start(ctdb);
- }
-
- return ctdb->methods->start(ctdb);
-}
diff --git a/source4/cluster/ctdb/common/ctdb_call.c b/source4/cluster/ctdb/common/ctdb_call.c
index ab5c2cce3b..76a7e97a87 100644
--- a/source4/cluster/ctdb/common/ctdb_call.c
+++ b/source4/cluster/ctdb/common/ctdb_call.c
@@ -47,9 +47,9 @@
/*
local version of ctdb_call
*/
-static int ctdb_call_local(struct ctdb_db_context *ctdb_db, struct ctdb_call *call,
- struct ctdb_ltdb_header *header, TDB_DATA *data,
- uint32_t caller)
+int ctdb_call_local(struct ctdb_db_context *ctdb_db, struct ctdb_call *call,
+ struct ctdb_ltdb_header *header, TDB_DATA *data,
+ uint32_t caller)
{
struct ctdb_call_info *c;
struct ctdb_registered_call *fn;
@@ -105,6 +105,7 @@ static int ctdb_call_local(struct ctdb_db_context *ctdb_db, struct ctdb_call *ca
if (c->reply_data) {
call->reply_data = *c->reply_data;
talloc_steal(ctdb, call->reply_data.dptr);
+ talloc_set_name_const(call->reply_data.dptr, __location__);
} else {
call->reply_data.dptr = NULL;
call->reply_data.dsize = 0;
@@ -140,7 +141,7 @@ static void ctdb_send_error(struct ctdb_context *ctdb,
msglen = strlen(msg)+1;
len = offsetof(struct ctdb_reply_error, msg);
- r = ctdb->methods->allocate_pkt(ctdb, len + msglen);
+ r = ctdb->methods->allocate_pkt(msg, len + msglen);
CTDB_NO_MEMORY_FATAL(ctdb, r);
talloc_set_name_const(r, "send_error packet");
@@ -155,11 +156,9 @@ static void ctdb_send_error(struct ctdb_context *ctdb,
r->msglen = msglen;
memcpy(&r->msg[0], msg, msglen);
- talloc_free(msg);
-
ctdb_queue_packet(ctdb, &r->hdr);
- talloc_free(r);
+ talloc_free(msg);
}
@@ -223,16 +222,12 @@ static void ctdb_call_send_dmaster(struct ctdb_db_context *ctdb_db,
memcpy(&r->data[0], key->dptr, key->dsize);
memcpy(&r->data[key->dsize], data->dptr, data->dsize);
- if (r->hdr.destnode == ctdb->vnn) {
- /* we are the lmaster - don't send to ourselves */
- ctdb_request_dmaster(ctdb, &r->hdr);
- } else {
- ctdb_queue_packet(ctdb, &r->hdr);
-
- /* update the ltdb to record the new dmaster */
- header->dmaster = r->hdr.destnode;
- ctdb_ltdb_store(ctdb_db, *key, header, *data);
- }
+ /* XXX - probably not necessary when lmaster==dmaster
+ update the ltdb to record the new dmaster */
+ header->dmaster = r->hdr.destnode;
+ ctdb_ltdb_store(ctdb_db, *key, header, *data);
+
+ ctdb_queue_packet(ctdb, &r->hdr);
talloc_free(r);
}
@@ -252,6 +247,7 @@ void ctdb_request_dmaster(struct ctdb_context *ctdb, struct ctdb_req_header *hdr
struct ctdb_ltdb_header header;
struct ctdb_db_context *ctdb_db;
int ret, len;
+ TALLOC_CTX *tmp_ctx;
key.dptr = c->data;
key.dsize = c->keylen;
@@ -267,28 +263,41 @@ void ctdb_request_dmaster(struct ctdb_context *ctdb, struct ctdb_req_header *hdr
}
/* fetch the current record */
- ret = ctdb_ltdb_fetch(ctdb_db, key, &header, hdr, &data2);
- if (ret != 0) {
+ ret = ctdb_ltdb_lock_fetch_requeue(ctdb_db, key, &header, hdr, &data2,
+ ctdb_recv_raw_pkt, ctdb);
+ if (ret == -1) {
ctdb_fatal(ctdb, "ctdb_req_dmaster failed to fetch record");
return;
}
-
+ if (ret == -2) {
+ DEBUG(2,(__location__ " deferring ctdb_request_dmaster\n"));
+ return;
+ }
+
/* its a protocol error if the sending node is not the current dmaster */
- if (header.dmaster != hdr->srcnode) {
+ if (header.dmaster != hdr->srcnode &&
+ hdr->srcnode != ctdb_lmaster(ctdb_db->ctdb, &key)) {
ctdb_fatal(ctdb, "dmaster request from non-master");
return;
}
-
+
header.dmaster = c->dmaster;
- if (ctdb_ltdb_store(ctdb_db, key, &header, data) != 0) {
+ ret = ctdb_ltdb_store(ctdb_db, key, &header, data);
+ ctdb_ltdb_unlock(ctdb_db, key);
+ if (ret != 0) {
ctdb_fatal(ctdb, "ctdb_req_dmaster unable to update dmaster");
return;
}
+ /* put the packet on a temporary context, allowing us to safely free
+ it below even if ctdb_reply_dmaster() has freed it already */
+ tmp_ctx = talloc_new(ctdb);
+
/* send the CTDB_REPLY_DMASTER */
len = offsetof(struct ctdb_reply_dmaster, data) + data.dsize;
- r = ctdb->methods->allocate_pkt(ctdb, len);
+ r = ctdb->methods->allocate_pkt(tmp_ctx, len);
CTDB_NO_MEMORY_FATAL(ctdb, r);
+
talloc_set_name_const(r, "reply_dmaster packet");
r->hdr.length = len;
r->hdr.ctdb_magic = CTDB_MAGIC;
@@ -300,13 +309,9 @@ void ctdb_request_dmaster(struct ctdb_context *ctdb, struct ctdb_req_header *hdr
r->datalen = data.dsize;
memcpy(&r->data[0], data.dptr, data.dsize);
- if (r->hdr.destnode == r->hdr.srcnode) {
- ctdb_reply_dmaster(ctdb, &r->hdr);
- } else {
- ctdb_queue_packet(ctdb, &r->hdr);
- }
+ ctdb_queue_packet(ctdb, &r->hdr);
- talloc_free(r);
+ talloc_free(tmp_ctx);
}
@@ -341,17 +346,23 @@ void ctdb_request_call(struct ctdb_context *ctdb, struct ctdb_req_header *hdr)
fetches the record data (if any), thus avoiding a 2nd fetch of the data
if the call will be answered locally */
- ret = ctdb_ltdb_fetch(ctdb_db, call.key, &header, hdr, &data);
- if (ret != 0) {
+ ret = ctdb_ltdb_lock_fetch_requeue(ctdb_db, call.key, &header, hdr, &data,
+ ctdb_recv_raw_pkt, ctdb);
+ if (ret == -1) {
ctdb_send_error(ctdb, hdr, ret, "ltdb fetch failed in ctdb_request_call");
return;
}
+ if (ret == -2) {
+ DEBUG(2,(__location__ " deferred ctdb_request_call\n"));
+ return;
+ }
/* if we are not the dmaster, then send a redirect to the
requesting node */
if (header.dmaster != ctdb->vnn) {
ctdb_call_send_redirect(ctdb, c, &header);
talloc_free(data.dptr);
+ ctdb_ltdb_unlock(ctdb_db, call.key);
return;
}
@@ -364,11 +375,14 @@ void ctdb_request_call(struct ctdb_context *ctdb, struct ctdb_req_header *hdr)
|| c->flags&CTDB_IMMEDIATE_MIGRATION ) {
ctdb_call_send_dmaster(ctdb_db, c, &header, &call.key, &data);
talloc_free(data.dptr);
+ ctdb_ltdb_unlock(ctdb_db, call.key);
return;
}
ctdb_call_local(ctdb_db, &call, &header, &data, c->hdr.srcnode);
+ ctdb_ltdb_unlock(ctdb_db, call.key);
+
len = offsetof(struct ctdb_reply_call, data) + call.reply_data.dsize;
r = ctdb->methods->allocate_pkt(ctdb, len);
CTDB_NO_MEMORY_FATAL(ctdb, r);
@@ -396,15 +410,18 @@ void ctdb_request_call(struct ctdb_context *ctdb, struct ctdb_req_header *hdr)
called when a CTDB_REPLY_CALL packet comes in
This packet comes in response to a CTDB_REQ_CALL request packet. It
- contains any reply data freom the call
+ contains any reply data from the call
*/
void ctdb_reply_call(struct ctdb_context *ctdb, struct ctdb_req_header *hdr)
{
struct ctdb_reply_call *c = (struct ctdb_reply_call *)hdr;
struct ctdb_call_state *state;
- state = idr_find(ctdb->idr, hdr->reqid);
- if (state == NULL) return;
+ state = idr_find_type(ctdb->idr, hdr->reqid, struct ctdb_call_state);
+ if (state == NULL) {
+ DEBUG(0, ("reqid %d not found\n", hdr->reqid));
+ return;
+ }
state->call.reply_data.dptr = c->data;
state->call.reply_data.dsize = c->datalen;
@@ -412,10 +429,6 @@ void ctdb_reply_call(struct ctdb_context *ctdb, struct ctdb_req_header *hdr)
talloc_steal(state, c);
- /* get an extra reference here - this prevents the free in ctdb_recv_pkt()
- from freeing the data */
- (void)talloc_reference(state, c);
-
state->state = CTDB_CALL_DONE;
if (state->async.fn) {
state->async.fn(state);
@@ -435,13 +448,25 @@ void ctdb_reply_dmaster(struct ctdb_context *ctdb, struct ctdb_req_header *hdr)
struct ctdb_call_state *state;
struct ctdb_db_context *ctdb_db;
TDB_DATA data;
+ int ret;
- state = idr_find(ctdb->idr, hdr->reqid);
+ state = idr_find_type(ctdb->idr, hdr->reqid, struct ctdb_call_state);
if (state == NULL) {
return;
}
+
ctdb_db = state->ctdb_db;
+ ret = ctdb_ltdb_lock_requeue(ctdb_db, state->call.key, hdr,
+ ctdb_recv_raw_pkt, ctdb);
+ if (ret == -2) {
+ return;
+ }
+ if (ret != 0) {
+ DEBUG(0,(__location__ " Failed to get lock in ctdb_reply_dmaster\n"));
+ return;
+ }
+
data.dptr = c->data;
data.dsize = c->datalen;
@@ -452,12 +477,17 @@ void ctdb_reply_dmaster(struct ctdb_context *ctdb, struct ctdb_req_header *hdr)
state->header.dmaster = ctdb->vnn;
if (ctdb_ltdb_store(ctdb_db, state->call.key, &state->header, data) != 0) {
+ ctdb_ltdb_unlock(ctdb_db, state->call.key);
ctdb_fatal(ctdb, "ctdb_reply_dmaster store failed\n");
return;
}
ctdb_call_local(ctdb_db, &state->call, &state->header, &data, ctdb->vnn);
+ ctdb_ltdb_unlock(ctdb_db, state->call.key);
+
+ talloc_steal(state, state->call.reply_data.dptr);
+
state->state = CTDB_CALL_DONE;
if (state->async.fn) {
state->async.fn(state);
@@ -473,7 +503,7 @@ void ctdb_reply_error(struct ctdb_context *ctdb, struct ctdb_req_header *hdr)
struct ctdb_reply_error *c = (struct ctdb_reply_error *)hdr;
struct ctdb_call_state *state;
- state = idr_find(ctdb->idr, hdr->reqid);
+ state = idr_find_type(ctdb->idr, hdr->reqid, struct ctdb_call_state);
if (state == NULL) return;
talloc_steal(state, c);
@@ -498,7 +528,7 @@ void ctdb_reply_redirect(struct ctdb_context *ctdb, struct ctdb_req_header *hdr)
struct ctdb_reply_redirect *c = (struct ctdb_reply_redirect *)hdr;
struct ctdb_call_state *state;
- state = idr_find(ctdb->idr, hdr->reqid);
+ state = idr_find_type(ctdb->idr, hdr->reqid, struct ctdb_call_state);
if (state == NULL) return;
talloc_steal(state, c);
@@ -510,6 +540,7 @@ void ctdb_reply_redirect(struct ctdb_context *ctdb, struct ctdb_req_header *hdr)
/* send it off again */
state->node = ctdb->nodes[c->dmaster];
+ state->c->hdr.destnode = c->dmaster;
ctdb_queue_packet(ctdb, &state->c->hdr);
}
@@ -578,6 +609,7 @@ struct ctdb_call_state *ctdb_call_local_send(struct ctdb_db_context *ctdb_db,
state->ctdb_db = ctdb_db;
ret = ctdb_call_local(ctdb_db, &state->call, header, data, ctdb->vnn);
+ talloc_steal(state, state->call.reply_data.dptr);
event_add_timed(ctdb->ev, state, timeval_zero(), call_local_trigger, state);
@@ -591,45 +623,27 @@ struct ctdb_call_state *ctdb_call_local_send(struct ctdb_db_context *ctdb_db,
This constructs a ctdb_call request and queues it for processing.
This call never blocks.
*/
-static struct ctdb_call_state *ctdb_daemon_call_send(struct ctdb_db_context *ctdb_db,
- struct ctdb_call *call)
+struct ctdb_call_state *ctdb_daemon_call_send_remote(struct ctdb_db_context *ctdb_db,
+ struct ctdb_call *call,
+ struct ctdb_ltdb_header *header)
{
uint32_t len;
struct ctdb_call_state *state;
- int ret;
- struct ctdb_ltdb_header header;
- TDB_DATA data;
struct ctdb_context *ctdb = ctdb_db->ctdb;
- /*
- if we are the dmaster for this key then we don't need to
- send it off at all, we can bypass the network and handle it
- locally. To find out if we are the dmaster we need to look
- in our ltdb
- */
- ret = ctdb_ltdb_fetch(ctdb_db, call->key, &header, ctdb_db, &data);
- if (ret != 0) return NULL;
-
- if (header.dmaster == ctdb->vnn && !(ctdb->flags & CTDB_FLAG_SELF_CONNECT)) {
- return ctdb_call_local_send(ctdb_db, call, &header, &data);
- }
-
state = talloc_zero(ctdb_db, struct ctdb_call_state);
CTDB_NO_MEMORY_NULL(ctdb, state);
- talloc_steal(state, data.dptr);
-
len = offsetof(struct ctdb_req_call, data) + call->key.dsize + call->call_data.dsize;
- state->c = ctdb->methods->allocate_pkt(ctdb, len);
+ state->c = ctdb->methods->allocate_pkt(state, len);
CTDB_NO_MEMORY_NULL(ctdb, state->c);
talloc_set_name_const(state->c, "req_call packet");
- talloc_steal(state, state->c);
state->c->hdr.length = len;
state->c->hdr.ctdb_magic = CTDB_MAGIC;
state->c->hdr.ctdb_version = CTDB_VERSION;
state->c->hdr.operation = CTDB_REQ_CALL;
- state->c->hdr.destnode = header.dmaster;
+ state->c->hdr.destnode = header->dmaster;
state->c->hdr.srcnode = ctdb->vnn;
/* this limits us to 16k outstanding messages - not unreasonable */
state->c->hdr.reqid = idr_get_new(ctdb->idr, state, 0xFFFF);
@@ -645,9 +659,9 @@ static struct ctdb_call_state *ctdb_daemon_call_send(struct ctdb_db_context *ctd
state->call.call_data.dptr = &state->c->data[call->key.dsize];
state->call.key.dptr = &state->c->data[0];
- state->node = ctdb->nodes[header.dmaster];
+ state->node = ctdb->nodes[header->dmaster];
state->state = CTDB_CALL_WAIT;
- state->header = header;
+ state->header = *header;
state->ctdb_db = ctdb_db;
talloc_set_destructor(state, ctdb_call_destructor);
@@ -660,29 +674,13 @@ static struct ctdb_call_state *ctdb_daemon_call_send(struct ctdb_db_context *ctd
}
/*
- make a remote ctdb call - async send
-
- This constructs a ctdb_call request and queues it for processing.
- This call never blocks.
-*/
-struct ctdb_call_state *ctdb_call_send(struct ctdb_db_context *ctdb_db, struct ctdb_call *call)
-{
- if (ctdb_db->ctdb->flags & CTDB_FLAG_DAEMON_MODE) {
- return ctdb_client_call_send(ctdb_db, call);
- }
- return ctdb_daemon_call_send(ctdb_db, call);
-}
-
-/*
make a remote ctdb call - async recv - called in daemon context
This is called when the program wants to wait for a ctdb_call to complete and get the
results. This call will block unless the call has already completed.
*/
-static int ctdb_daemon_call_recv(struct ctdb_call_state *state, struct ctdb_call *call)
+int ctdb_daemon_call_recv(struct ctdb_call_state *state, struct ctdb_call *call)
{
- struct ctdb_record_handle *rec;
-
while (state->state < CTDB_CALL_DONE) {
event_loop_once(state->node->ctdb->ev);
}
@@ -692,16 +690,6 @@ static int ctdb_daemon_call_recv(struct ctdb_call_state *state, struct ctdb_call
return -1;
}
- rec = state->fetch_private;
-
- /* ugly hack to manage forced migration */
- if (rec != NULL) {
- rec->data->dptr = talloc_steal(rec, state->call.reply_data.dptr);
- rec->data->dsize = state->call.reply_data.dsize;
- talloc_free(state);
- return 0;
- }
-
if (state->call.reply_data.dsize) {
call->reply_data.dptr = talloc_memdup(state->node->ctdb,
state->call.reply_data.dptr,
@@ -717,92 +705,3 @@ static int ctdb_daemon_call_recv(struct ctdb_call_state *state, struct ctdb_call
}
-/*
- make a remote ctdb call - async recv.
-
- This is called when the program wants to wait for a ctdb_call to complete and get the
- results. This call will block unless the call has already completed.
-*/
-int ctdb_call_recv(struct ctdb_call_state *state, struct ctdb_call *call)
-{
- if (state->ctdb_db->ctdb->flags & CTDB_FLAG_DAEMON_MODE) {
- return ctdb_client_call_recv(state, call);
- }
- return ctdb_daemon_call_recv(state, call);
-}
-
-/*
- full ctdb_call. Equivalent to a ctdb_call_send() followed by a ctdb_call_recv()
-*/
-int ctdb_call(struct ctdb_db_context *ctdb_db, struct ctdb_call *call)
-{
- struct ctdb_call_state *state;
-
- state = ctdb_call_send(ctdb_db, call);
- return ctdb_call_recv(state, call);
-}
-
-
-
-struct ctdb_record_handle *ctdb_fetch_lock(struct ctdb_db_context *ctdb_db, TALLOC_CTX *mem_ctx,
- TDB_DATA key, TDB_DATA *data)
-{
- struct ctdb_call call;
- struct ctdb_record_handle *rec;
- struct ctdb_call_state *state;
- int ret;
-
- if (ctdb_db->ctdb->flags & CTDB_FLAG_DAEMON_MODE) {
- return ctdb_client_fetch_lock(ctdb_db, mem_ctx, key, data);
- }
-
- ZERO_STRUCT(call);
- call.call_id = CTDB_FETCH_FUNC;
- call.key = key;
- call.flags = CTDB_IMMEDIATE_MIGRATION;
-
- rec = talloc(mem_ctx, struct ctdb_record_handle);
- CTDB_NO_MEMORY_NULL(ctdb_db->ctdb, rec);
-
- rec->ctdb_db = ctdb_db;
- rec->key = key;
- rec->key.dptr = talloc_memdup(rec, key.dptr, key.dsize);
- rec->data = data;
-
- state = ctdb_call_send(ctdb_db, &call);
- state->fetch_private = rec;
-
- ret = ctdb_call_recv(state, &call);
- if (ret != 0) {
- talloc_free(rec);
- return NULL;
- }
-
- return rec;
-}
-
-
-int ctdb_store_unlock(struct ctdb_record_handle *rec, TDB_DATA data)
-{
- int ret;
- struct ctdb_ltdb_header header;
- struct ctdb_db_context *ctdb_db = talloc_get_type(rec->ctdb_db, struct ctdb_db_context);
-
- if (ctdb_db->ctdb->flags & CTDB_FLAG_DAEMON_MODE) {
- return ctdb_client_store_unlock(rec, data);
- }
-
- /* should be avoided if possible hang header off rec ? */
- ret = ctdb_ltdb_fetch(rec->ctdb_db, rec->key, &header, NULL, NULL);
- if (ret) {
- ctdb_set_error(rec->ctdb_db->ctdb, "Fetch of locally held record failed");
- talloc_free(rec);
- return ret;
- }
-
- ret = ctdb_ltdb_store(rec->ctdb_db, rec->key, &header, data);
-
- talloc_free(rec);
-
- return ret;
-}
diff --git a/source4/cluster/ctdb/common/ctdb_client.c b/source4/cluster/ctdb/common/ctdb_client.c
index 3cb27a1165..dbed8d3585 100644
--- a/source4/cluster/ctdb/common/ctdb_client.c
+++ b/source4/cluster/ctdb/common/ctdb_client.c
@@ -49,94 +49,87 @@ static void ctdb_reply_connect_wait(struct ctdb_context *ctdb,
}
/*
- called in the client when we receive a CTDB_REPLY_FETCH_LOCK from the daemon
+ state of a in-progress ctdb call in client
+*/
+struct ctdb_client_call_state {
+ enum call_state state;
+ uint32_t reqid;
+ struct ctdb_db_context *ctdb_db;
+ struct ctdb_call call;
+};
+
+/*
+ called when a CTDB_REPLY_CALL packet comes in in the client
- This packet comes in response to a CTDB_REQ_FETCH_LOCK request packet. It
+ This packet comes in response to a CTDB_REQ_CALL request packet. It
contains any reply data from the call
*/
-void ctdb_reply_fetch_lock(struct ctdb_context *ctdb, struct ctdb_req_header *hdr)
+static void ctdb_client_reply_call(struct ctdb_context *ctdb, struct ctdb_req_header *hdr)
{
- struct ctdb_reply_fetch_lock *c = (struct ctdb_reply_fetch_lock *)hdr;
- struct ctdb_call_state *state;
+ struct ctdb_reply_call *c = (struct ctdb_reply_call *)hdr;
+ struct ctdb_client_call_state *state;
- state = idr_find(ctdb->idr, hdr->reqid);
- if (state == NULL) return;
+ state = idr_find_type(ctdb->idr, hdr->reqid, struct ctdb_client_call_state);
+ if (state == NULL) {
+ DEBUG(0, ("reqid %d not found\n", hdr->reqid));
+ return;
+ }
state->call.reply_data.dptr = c->data;
state->call.reply_data.dsize = c->datalen;
- state->call.status = c->state;
+ state->call.status = c->status;
talloc_steal(state, c);
- /* get an extra reference here - this prevents the free in ctdb_recv_pkt()
- from freeing the data */
- (void)talloc_reference(state, c);
-
state->state = CTDB_CALL_DONE;
- if (state->async.fn) {
- state->async.fn(state);
- }
}
-/*
- called in the client when we receive a CTDB_REPLY_STORE_UNLOCK from the daemon
-
- This packet comes in response to a CTDB_REQ_STORE_UNLOCK request packet. It
- contains any reply data from the call
-*/
-void ctdb_reply_store_unlock(struct ctdb_context *ctdb, struct ctdb_req_header *hdr)
-{
- struct ctdb_reply_store_unlock *c = (struct ctdb_reply_store_unlock *)hdr;
- struct ctdb_call_state *state;
-
- state = idr_find(ctdb->idr, hdr->reqid);
- if (state == NULL) return;
-
- state->call.status = c->state;
-
- talloc_steal(state, c);
-
- /* get an extra reference here - this prevents the free in ctdb_recv_pkt()
- from freeing the data */
- (void)talloc_reference(state, c);
+static void ctdb_reply_status(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
- state->state = CTDB_CALL_DONE;
- if (state->async.fn) {
- state->async.fn(state);
- }
-}
/*
this is called in the client, when data comes in from the daemon
*/
static void ctdb_client_read_cb(uint8_t *data, size_t cnt, void *args)
{
struct ctdb_context *ctdb = talloc_get_type(args, struct ctdb_context);
- struct ctdb_req_header *hdr;
+ struct ctdb_req_header *hdr = (struct ctdb_req_header *)data;
+ TALLOC_CTX *tmp_ctx;
+
+ /* place the packet as a child of a tmp_ctx. We then use
+ talloc_free() below to free it. If any of the calls want
+ to keep it, then they will steal it somewhere else, and the
+ talloc_free() will be a no-op */
+ tmp_ctx = talloc_new(ctdb);
+ talloc_steal(tmp_ctx, hdr);
+
+ if (cnt == 0) {
+ DEBUG(2,("Daemon has exited - shutting down client\n"));
+ exit(0);
+ }
if (cnt < sizeof(*hdr)) {
- ctdb_set_error(ctdb, "Bad packet length %d\n", cnt);
- return;
+ DEBUG(0,("Bad packet length %d in client\n", cnt));
+ goto done;
}
- hdr = (struct ctdb_req_header *)data;
if (cnt != hdr->length) {
- ctdb_set_error(ctdb, "Bad header length %d expected %d\n",
+ ctdb_set_error(ctdb, "Bad header length %d expected %d in client\n",
hdr->length, cnt);
- return;
+ goto done;
}
if (hdr->ctdb_magic != CTDB_MAGIC) {
- ctdb_set_error(ctdb, "Non CTDB packet rejected\n");
- return;
+ ctdb_set_error(ctdb, "Non CTDB packet rejected in client\n");
+ goto done;
}
if (hdr->ctdb_version != CTDB_VERSION) {
- ctdb_set_error(ctdb, "Bad CTDB version 0x%x rejected\n", hdr->ctdb_version);
- return;
+ ctdb_set_error(ctdb, "Bad CTDB version 0x%x rejected in client\n", hdr->ctdb_version);
+ goto done;
}
switch (hdr->operation) {
case CTDB_REPLY_CALL:
- ctdb_reply_call(ctdb, hdr);
+ ctdb_client_reply_call(ctdb, hdr);
break;
case CTDB_REQ_MESSAGE:
@@ -147,23 +140,22 @@ static void ctdb_client_read_cb(uint8_t *data, size_t cnt, void *args)
ctdb_reply_connect_wait(ctdb, hdr);
break;
- case CTDB_REPLY_FETCH_LOCK:
- ctdb_reply_fetch_lock(ctdb, hdr);
- break;
-
- case CTDB_REPLY_STORE_UNLOCK:
- ctdb_reply_store_unlock(ctdb, hdr);
+ case CTDB_REPLY_STATUS:
+ ctdb_reply_status(ctdb, hdr);
break;
default:
- printf("bogus operation code:%d\n",hdr->operation);
+ DEBUG(0,("bogus operation code:%d\n",hdr->operation));
}
+
+done:
+ talloc_free(tmp_ctx);
}
/*
connect to a unix domain socket
*/
-static int ux_socket_connect(struct ctdb_context *ctdb)
+int ctdb_socket_connect(struct ctdb_context *ctdb)
{
struct sockaddr_un addr;
@@ -189,6 +181,13 @@ static int ux_socket_connect(struct ctdb_context *ctdb)
}
+struct ctdb_record_handle {
+ struct ctdb_db_context *ctdb_db;
+ TDB_DATA key;
+ TDB_DATA *data;
+ struct ctdb_ltdb_header header;
+};
+
/*
make a recv call to the local ctdb daemon - called from client context
@@ -196,31 +195,19 @@ static int ux_socket_connect(struct ctdb_context *ctdb)
This is called when the program wants to wait for a ctdb_call to complete and get the
results. This call will block unless the call has already completed.
*/
-int ctdb_client_call_recv(struct ctdb_call_state *state, struct ctdb_call *call)
+int ctdb_call_recv(struct ctdb_client_call_state *state, struct ctdb_call *call)
{
- struct ctdb_record_handle *rec;
-
while (state->state < CTDB_CALL_DONE) {
- event_loop_once(state->node->ctdb->ev);
+ event_loop_once(state->ctdb_db->ctdb->ev);
}
if (state->state != CTDB_CALL_DONE) {
- ctdb_set_error(state->node->ctdb, "%s", state->errmsg);
+ DEBUG(0,(__location__ " ctdb_call_recv failed\n"));
talloc_free(state);
return -1;
}
- rec = state->fetch_private;
-
- /* ugly hack to manage forced migration */
- if (rec != NULL) {
- rec->data->dptr = talloc_steal(rec, state->call.reply_data.dptr);
- rec->data->dsize = state->call.reply_data.dsize;
- talloc_free(state);
- return 0;
- }
-
if (state->call.reply_data.dsize) {
- call->reply_data.dptr = talloc_memdup(state->node->ctdb,
+ call->reply_data.dptr = talloc_memdup(state->ctdb_db,
state->call.reply_data.dptr,
state->call.reply_data.dsize);
call->reply_data.dsize = state->call.reply_data.dsize;
@@ -240,13 +227,41 @@ int ctdb_client_call_recv(struct ctdb_call_state *state, struct ctdb_call *call)
/*
destroy a ctdb_call in client
*/
-static int ctdb_client_call_destructor(struct ctdb_call_state *state)
+static int ctdb_client_call_destructor(struct ctdb_client_call_state *state)
{
- idr_remove(state->node->ctdb->idr, state->c->hdr.reqid);
+ idr_remove(state->ctdb_db->ctdb->idr, state->reqid);
return 0;
}
+/*
+ construct an event driven local ctdb_call
+
+ this is used so that locally processed ctdb_call requests are processed
+ in an event driven manner
+*/
+static struct ctdb_client_call_state *ctdb_client_call_local_send(struct ctdb_db_context *ctdb_db,
+ struct ctdb_call *call,
+ struct ctdb_ltdb_header *header,
+ TDB_DATA *data)
+{
+ struct ctdb_client_call_state *state;
+ struct ctdb_context *ctdb = ctdb_db->ctdb;
+ int ret;
+
+ state = talloc_zero(ctdb_db, struct ctdb_client_call_state);
+ CTDB_NO_MEMORY_NULL(ctdb, state);
+ talloc_steal(state, data->dptr);
+
+ state->state = CTDB_CALL_DONE;
+ state->call = *call;
+ state->ctdb_db = ctdb_db;
+
+ ret = ctdb_call_local(ctdb_db, &state->call, header, data, ctdb->vnn);
+ talloc_steal(state, state->call.reply_data.dptr);
+
+ return state;
+}
/*
make a ctdb call to the local daemon - async send. Called from client context.
@@ -254,107 +269,109 @@ static int ctdb_client_call_destructor(struct ctdb_call_state *state)
This constructs a ctdb_call request and queues it for processing.
This call never blocks.
*/
-struct ctdb_call_state *ctdb_client_call_send(struct ctdb_db_context *ctdb_db,
- struct ctdb_call *call)
+struct ctdb_client_call_state *ctdb_call_send(struct ctdb_db_context *ctdb_db,
+ struct ctdb_call *call)
{
- struct ctdb_call_state *state;
+ struct ctdb_client_call_state *state;
struct ctdb_context *ctdb = ctdb_db->ctdb;
struct ctdb_ltdb_header header;
TDB_DATA data;
int ret;
size_t len;
+ struct ctdb_req_call *c;
/* if the domain socket is not yet open, open it */
if (ctdb->daemon.sd==-1) {
- ux_socket_connect(ctdb);
+ ctdb_socket_connect(ctdb);
}
ret = ctdb_ltdb_lock(ctdb_db, call->key);
if (ret != 0) {
- printf("failed to lock ltdb record\n");
+ DEBUG(0,(__location__ " Failed to get chainlock\n"));
return NULL;
}
ret = ctdb_ltdb_fetch(ctdb_db, call->key, &header, ctdb_db, &data);
if (ret != 0) {
ctdb_ltdb_unlock(ctdb_db, call->key);
+ DEBUG(0,(__location__ " Failed to fetch record\n"));
return NULL;
}
-#if 0
if (header.dmaster == ctdb->vnn && !(ctdb->flags & CTDB_FLAG_SELF_CONNECT)) {
- state = ctdb_call_local_send(ctdb_db, call, &header, &data);
+ state = ctdb_client_call_local_send(ctdb_db, call, &header, &data);
+ talloc_free(data.dptr);
ctdb_ltdb_unlock(ctdb_db, call->key);
return state;
}
-#endif
- state = talloc_zero(ctdb_db, struct ctdb_call_state);
+ ctdb_ltdb_unlock(ctdb_db, call->key);
+ talloc_free(data.dptr);
+
+ state = talloc_zero(ctdb_db, struct ctdb_client_call_state);
if (state == NULL) {
- printf("failed to allocate state\n");
- ctdb_ltdb_unlock(ctdb_db, call->key);
+ DEBUG(0, (__location__ " failed to allocate state\n"));
return NULL;
}
- talloc_steal(state, data.dptr);
-
len = offsetof(struct ctdb_req_call, data) + call->key.dsize + call->call_data.dsize;
- state->c = ctdbd_allocate_pkt(ctdb, len);
- if (state->c == NULL) {
- printf("failed to allocate packet\n");
- ctdb_ltdb_unlock(ctdb_db, call->key);
+ c = ctdbd_allocate_pkt(state, len);
+ if (c == NULL) {
+ DEBUG(0, (__location__ " failed to allocate packet\n"));
return NULL;
}
- talloc_set_name_const(state->c, "ctdbd req_call packet");
- talloc_steal(state, state->c);
+ talloc_set_name_const(c, "ctdb client req_call packet");
+ memset(c, 0, offsetof(struct ctdb_req_call, data));
- state->c->hdr.length = len;
- state->c->hdr.ctdb_magic = CTDB_MAGIC;
- state->c->hdr.ctdb_version = CTDB_VERSION;
- state->c->hdr.operation = CTDB_REQ_CALL;
- state->c->hdr.destnode = header.dmaster;
- state->c->hdr.srcnode = ctdb->vnn;
+ c->hdr.length = len;
+ c->hdr.ctdb_magic = CTDB_MAGIC;
+ c->hdr.ctdb_version = CTDB_VERSION;
+ c->hdr.operation = CTDB_REQ_CALL;
/* this limits us to 16k outstanding messages - not unreasonable */
- state->c->hdr.reqid = idr_get_new(ctdb->idr, state, 0xFFFF);
- state->c->flags = call->flags;
- state->c->db_id = ctdb_db->db_id;
- state->c->callid = call->call_id;
- state->c->keylen = call->key.dsize;
- state->c->calldatalen = call->call_data.dsize;
- memcpy(&state->c->data[0], call->key.dptr, call->key.dsize);
- memcpy(&state->c->data[call->key.dsize],
+ c->hdr.reqid = idr_get_new(ctdb->idr, state, 0xFFFF);
+ c->flags = call->flags;
+ c->db_id = ctdb_db->db_id;
+ c->callid = call->call_id;
+ c->keylen = call->key.dsize;
+ c->calldatalen = call->call_data.dsize;
+ memcpy(&c->data[0], call->key.dptr, call->key.dsize);
+ memcpy(&c->data[call->key.dsize],
call->call_data.dptr, call->call_data.dsize);
state->call = *call;
- state->call.call_data.dptr = &state->c->data[call->key.dsize];
- state->call.key.dptr = &state->c->data[0];
+ state->call.call_data.dptr = &c->data[call->key.dsize];
+ state->call.key.dptr = &c->data[0];
- state->node = ctdb->nodes[header.dmaster];
state->state = CTDB_CALL_WAIT;
- state->header = header;
state->ctdb_db = ctdb_db;
+ state->reqid = c->hdr.reqid;
talloc_set_destructor(state, ctdb_client_call_destructor);
- ctdb_client_queue_pkt(ctdb, &state->c->hdr);
-
-/*XXX set up timeout to cleanup if server doesnt respond
- event_add_timed(ctdb->ev, state, timeval_current_ofs(CTDB_REQ_TIMEOUT, 0),
- ctdb_call_timeout, state);
-*/
+ ctdb_client_queue_pkt(ctdb, &c->hdr);
- ctdb_ltdb_unlock(ctdb_db, call->key);
return state;
}
+/*
+ full ctdb_call. Equivalent to a ctdb_call_send() followed by a ctdb_call_recv()
+*/
+int ctdb_call(struct ctdb_db_context *ctdb_db, struct ctdb_call *call)
+{
+ struct ctdb_client_call_state *state;
+
+ state = ctdb_call_send(ctdb_db, call);
+ return ctdb_call_recv(state, call);
+}
+
/*
tell the daemon what messaging srvid we will use, and register the message
handler function in the client
*/
-int ctdb_client_set_message_handler(struct ctdb_context *ctdb, uint32_t srvid,
- ctdb_message_fn_t handler,
- void *private_data)
+int ctdb_set_message_handler(struct ctdb_context *ctdb, uint32_t srvid,
+ ctdb_message_fn_t handler,
+ void *private_data)
{
struct ctdb_req_register c;
@@ -362,7 +379,7 @@ int ctdb_client_set_message_handler(struct ctdb_context *ctdb, uint32_t srvid,
/* if the domain socket is not yet open, open it */
if (ctdb->daemon.sd==-1) {
- ux_socket_connect(ctdb);
+ ctdb_socket_connect(ctdb);
}
ZERO_STRUCT(c);
@@ -383,26 +400,10 @@ int ctdb_client_set_message_handler(struct ctdb_context *ctdb, uint32_t srvid,
}
-
-/*
- setup handler for receipt of ctdb messages from ctdb_send_message()
-*/
-int ctdb_set_message_handler(struct ctdb_context *ctdb,
- uint32_t srvid,
- ctdb_message_fn_t handler,
- void *private_data)
-{
- if (ctdb->flags & CTDB_FLAG_DAEMON_MODE) {
- return ctdb_client_set_message_handler(ctdb, srvid, handler, private_data);
- }
- return ctdb_daemon_set_message_handler(ctdb, srvid, handler, private_data);
-}
-
-
/*
send a message - from client context
*/
-int ctdb_client_send_message(struct ctdb_context *ctdb, uint32_t vnn,
+int ctdb_send_message(struct ctdb_context *ctdb, uint32_t vnn,
uint32_t srvid, TDB_DATA data)
{
struct ctdb_req_message *r;
@@ -436,7 +437,7 @@ int ctdb_client_send_message(struct ctdb_context *ctdb, uint32_t vnn,
/*
wait for all nodes to be connected - from client
*/
-static void ctdb_client_connect_wait(struct ctdb_context *ctdb)
+void ctdb_connect_wait(struct ctdb_context *ctdb)
{
struct ctdb_req_connect_wait r;
int res;
@@ -447,216 +448,235 @@ static void ctdb_client_connect_wait(struct ctdb_context *ctdb)
r.hdr.ctdb_magic = CTDB_MAGIC;
r.hdr.ctdb_version = CTDB_VERSION;
r.hdr.operation = CTDB_REQ_CONNECT_WAIT;
+
+ DEBUG(3,("ctdb_connect_wait: sending to ctdbd\n"));
+
+ /* if the domain socket is not yet open, open it */
+ if (ctdb->daemon.sd==-1) {
+ ctdb_socket_connect(ctdb);
+ }
res = ctdb_queue_send(ctdb->daemon.queue, (uint8_t *)&r.hdr, r.hdr.length);
if (res != 0) {
- printf("Failed to queue a connect wait request\n");
+ DEBUG(0,(__location__ " Failed to queue a connect wait request\n"));
return;
}
+ DEBUG(3,("ctdb_connect_wait: waiting\n"));
+
/* now we can go into the normal wait routine, as the reply packet
will update the ctdb->num_connected variable */
ctdb_daemon_connect_wait(ctdb);
}
/*
- wait for all nodes to be connected
-*/
-void ctdb_connect_wait(struct ctdb_context *ctdb)
+ cancel a ctdb_fetch_lock operation, releasing the lock
+ */
+static int fetch_lock_destructor(struct ctdb_record_handle *h)
{
- if (!(ctdb->flags & CTDB_FLAG_DAEMON_MODE)) {
- ctdb_daemon_connect_wait(ctdb);
- return;
- }
-
- ctdb_client_connect_wait(ctdb);
+ ctdb_ltdb_unlock(h->ctdb_db, h->key);
+ return 0;
}
+/*
+ force the migration of a record to this node
+ */
+static int ctdb_client_force_migration(struct ctdb_db_context *ctdb_db, TDB_DATA key)
+{
+ struct ctdb_call call;
+ ZERO_STRUCT(call);
+ call.call_id = CTDB_NULL_FUNC;
+ call.key = key;
+ call.flags = CTDB_IMMEDIATE_MIGRATION;
+ return ctdb_call(ctdb_db, &call);
+}
-struct ctdb_call_state *ctdb_client_fetch_lock_send(struct ctdb_db_context *ctdb_db,
- TALLOC_CTX *mem_ctx,
- TDB_DATA key)
+/*
+ get a lock on a record, and return the records data. Blocks until it gets the lock
+ */
+struct ctdb_record_handle *ctdb_fetch_lock(struct ctdb_db_context *ctdb_db, TALLOC_CTX *mem_ctx,
+ TDB_DATA key, TDB_DATA *data)
{
- struct ctdb_call_state *state;
- struct ctdb_context *ctdb = ctdb_db->ctdb;
- struct ctdb_req_fetch_lock *req;
- int len, res;
+ int ret;
+ struct ctdb_record_handle *h;
- /* if the domain socket is not yet open, open it */
- if (ctdb->daemon.sd==-1) {
- ux_socket_connect(ctdb);
- }
+ /*
+ procedure is as follows:
- state = talloc_zero(ctdb_db, struct ctdb_call_state);
- if (state == NULL) {
- printf("failed to allocate state\n");
- return NULL;
- }
- state->state = CTDB_CALL_WAIT;
- state->ctdb_db = ctdb_db;
- len = offsetof(struct ctdb_req_fetch_lock, key) + key.dsize;
- state->c = ctdbd_allocate_pkt(ctdb, len);
- if (state->c == NULL) {
- printf("failed to allocate packet\n");
+ 1) get the chain lock.
+ 2) check if we are dmaster
+ 3) if we are the dmaster then return handle
+ 4) if not dmaster then ask ctdb daemon to make us dmaster, and wait for
+ reply from ctdbd
+ 5) when we get the reply, goto (1)
+ */
+
+ h = talloc_zero(mem_ctx, struct ctdb_record_handle);
+ if (h == NULL) {
return NULL;
}
- ZERO_STRUCT(*state->c);
- talloc_set_name_const(state->c, "ctdbd req_fetch_lock packet");
- talloc_steal(state, state->c);
-
- req = (struct ctdb_req_fetch_lock *)state->c;
- req->hdr.length = len;
- req->hdr.ctdb_magic = CTDB_MAGIC;
- req->hdr.ctdb_version = CTDB_VERSION;
- req->hdr.operation = CTDB_REQ_FETCH_LOCK;
- req->hdr.reqid = idr_get_new(ctdb->idr, state, 0xFFFF);
- req->db_id = ctdb_db->db_id;
- req->keylen = key.dsize;
- memcpy(&req->key[0], key.dptr, key.dsize);
-
- res = ctdb_client_queue_pkt(ctdb, &req->hdr);
- if (res != 0) {
+
+ h->ctdb_db = ctdb_db;
+ h->key = key;
+ h->key.dptr = talloc_memdup(h, key.dptr, key.dsize);
+ if (h->key.dptr == NULL) {
+ talloc_free(h);
return NULL;
}
+ h->data = data;
- talloc_free(req);
-
- return state;
-}
+ DEBUG(3,("ctdb_fetch_lock: key=%*.*s\n", key.dsize, key.dsize,
+ (const char *)key.dptr));
+again:
+ /* step 1 - get the chain lock */
+ ret = ctdb_ltdb_lock(ctdb_db, key);
+ if (ret != 0) {
+ DEBUG(0, (__location__ " failed to lock ltdb record\n"));
+ talloc_free(h);
+ return NULL;
+ }
-struct ctdb_call_state *ctdb_client_store_unlock_send(
- struct ctdb_record_handle *rh,
- TALLOC_CTX *mem_ctx,
- TDB_DATA data)
-{
- struct ctdb_call_state *state;
- struct ctdb_db_context *ctdb_db = talloc_get_type(rh->ctdb_db, struct ctdb_db_context);
- struct ctdb_context *ctdb = ctdb_db->ctdb;
- struct ctdb_req_store_unlock *req;
- int len, res;
+ DEBUG(4,("ctdb_fetch_lock: got chain lock\n"));
- /* if the domain socket is not yet open, open it */
- if (ctdb->daemon.sd==-1) {
- ux_socket_connect(ctdb);
- }
+ talloc_set_destructor(h, fetch_lock_destructor);
- state = talloc_zero(ctdb_db, struct ctdb_call_state);
- if (state == NULL) {
- printf("failed to allocate state\n");
- return NULL;
- }
- state->state = CTDB_CALL_WAIT;
- state->ctdb_db = ctdb_db;
- len = offsetof(struct ctdb_req_store_unlock, data) + rh->key.dsize + data.dsize;
- state->c = ctdbd_allocate_pkt(ctdb, len);
- if (state->c == NULL) {
- printf("failed to allocate packet\n");
+ ret = ctdb_ltdb_fetch(ctdb_db, key, &h->header, h, data);
+ if (ret != 0) {
+ ctdb_ltdb_unlock(ctdb_db, key);
+ talloc_free(h);
return NULL;
}
- ZERO_STRUCT(*state->c);
- talloc_set_name_const(state->c, "ctdbd req_store_unlock packet");
- talloc_steal(state, state->c);
-
- req = (struct ctdb_req_store_unlock *)state->c;
- req->hdr.length = len;
- req->hdr.ctdb_magic = CTDB_MAGIC;
- req->hdr.ctdb_version = CTDB_VERSION;
- req->hdr.operation = CTDB_REQ_STORE_UNLOCK;
- req->hdr.reqid = idr_get_new(ctdb->idr, state, 0xFFFF);
- req->db_id = ctdb_db->db_id;
- req->keylen = rh->key.dsize;
- req->datalen = data.dsize;
- memcpy(&req->data[0], rh->key.dptr, rh->key.dsize);
- memcpy(&req->data[req->keylen], data.dptr, data.dsize);
-
- res = ctdb_client_queue_pkt(ctdb, &req->hdr);
- if (res != 0) {
- return NULL;
+
+ /* when torturing, ensure we test the remote path */
+ if ((ctdb_db->ctdb->flags & CTDB_FLAG_TORTURE) &&
+ random() % 5 == 0) {
+ h->header.dmaster = (uint32_t)-1;
}
- talloc_free(req);
- return state;
+ DEBUG(4,("ctdb_fetch_lock: done local fetch\n"));
+
+ if (h->header.dmaster != ctdb_db->ctdb->vnn) {
+ ctdb_ltdb_unlock(ctdb_db, key);
+ ret = ctdb_client_force_migration(ctdb_db, key);
+ if (ret != 0) {
+ DEBUG(4,("ctdb_fetch_lock: force_migration failed\n"));
+ talloc_free(h);
+ return NULL;
+ }
+ goto again;
+ }
+
+ DEBUG(4,("ctdb_fetch_lock: we are dmaster - done\n"));
+ return h;
}
/*
- make a recv call to the local ctdb daemon - called from client context
+ store some data to the record that was locked with ctdb_fetch_lock()
+*/
+int ctdb_record_store(struct ctdb_record_handle *h, TDB_DATA data)
+{
+ return ctdb_ltdb_store(h->ctdb_db, h->key, &h->header, data);
+}
- This is called when the program wants to wait for a ctdb_fetch_lock to complete and get the
- results. This call will block unless the call has already completed.
+/*
+ wait until we're the only node left.
+ this function never returns
*/
-struct ctdb_record_handle *ctdb_client_fetch_lock_recv(struct ctdb_call_state *state, TALLOC_CTX *mem_ctx, TDB_DATA key, TDB_DATA *data)
+void ctdb_shutdown(struct ctdb_context *ctdb)
{
- struct ctdb_record_handle *rec;
+ struct ctdb_req_shutdown r;
+ int len;
- while (state->state < CTDB_CALL_DONE) {
- event_loop_once(state->ctdb_db->ctdb->ev);
- }
- if (state->state != CTDB_CALL_DONE) {
- ctdb_set_error(state->node->ctdb, "%s", state->errmsg);
- talloc_free(state);
- return NULL;
+ /* if the domain socket is not yet open, open it */
+ if (ctdb->daemon.sd==-1) {
+ ctdb_socket_connect(ctdb);
}
- rec = talloc(mem_ctx, struct ctdb_record_handle);
- CTDB_NO_MEMORY_NULL(state->ctdb_db->ctdb, rec);
+ len = sizeof(struct ctdb_req_shutdown);
+ ZERO_STRUCT(r);
+ r.hdr.length = len;
+ r.hdr.ctdb_magic = CTDB_MAGIC;
+ r.hdr.ctdb_version = CTDB_VERSION;
+ r.hdr.operation = CTDB_REQ_SHUTDOWN;
+ r.hdr.reqid = 0;
- rec->ctdb_db = state->ctdb_db;
- rec->key = key;
- rec->key.dptr = talloc_memdup(rec, key.dptr, key.dsize);
- rec->data = talloc(rec, TDB_DATA);
- rec->data->dsize = state->call.reply_data.dsize;
- rec->data->dptr = talloc_memdup(rec, state->call.reply_data.dptr, rec->data->dsize);
+ ctdb_client_queue_pkt(ctdb, &(r.hdr));
- if (data) {
- *data = *rec->data;
+ /* this event loop will terminate once we receive the reply */
+ while (1) {
+ event_loop_once(ctdb->ev);
}
- return rec;
}
-/*
- make a recv call to the local ctdb daemon - called from client context
+enum ctdb_status_states {CTDB_STATUS_WAIT, CTDB_STATUS_DONE};
- This is called when the program wants to wait for a ctdb_store_unlock to complete and get the
- results. This call will block unless the call has already completed.
-*/
-int ctdb_client_store_unlock_recv(struct ctdb_call_state *state, struct ctdb_record_handle *rec)
+struct ctdb_status_state {
+ uint32_t reqid;
+ struct ctdb_status *status;
+ enum ctdb_status_states state;
+};
+
+/*
+ handle a ctdb_reply_status reply
+ */
+static void ctdb_reply_status(struct ctdb_context *ctdb, struct ctdb_req_header *hdr)
{
- while (state->state < CTDB_CALL_DONE) {
- event_loop_once(state->ctdb_db->ctdb->ev);
- }
- if (state->state != CTDB_CALL_DONE) {
- ctdb_set_error(state->node->ctdb, "%s", state->errmsg);
+ struct ctdb_reply_status *r = (struct ctdb_reply_status *)hdr;
+ struct ctdb_status_state *state;
+
+ state = idr_find_type(ctdb->idr, hdr->reqid, struct ctdb_status_state);
+ if (state == NULL) {
+ DEBUG(0, ("reqid %d not found\n", hdr->reqid));
+ return;
}
- talloc_free(state);
- return state->state;
+ *state->status = r->status;
+ state->state = CTDB_STATUS_DONE;
}
-struct ctdb_record_handle *ctdb_client_fetch_lock(struct ctdb_db_context *ctdb_db,
- TALLOC_CTX *mem_ctx,
- TDB_DATA key,
- TDB_DATA *data)
+/*
+ wait until we're the only node left.
+ this function never returns
+*/
+int ctdb_status(struct ctdb_context *ctdb, struct ctdb_status *status)
{
- struct ctdb_call_state *state;
- struct ctdb_record_handle *rec;
+ struct ctdb_req_status r;
+ int ret;
+ struct ctdb_status_state *state;
- state = ctdb_client_fetch_lock_send(ctdb_db, mem_ctx, key);
- rec = ctdb_client_fetch_lock_recv(state, mem_ctx, key, data);
+ /* if the domain socket is not yet open, open it */
+ if (ctdb->daemon.sd==-1) {
+ ctdb_socket_connect(ctdb);
+ }
- return rec;
-}
+ state = talloc(ctdb, struct ctdb_status_state);
+ CTDB_NO_MEMORY(ctdb, state);
-int ctdb_client_store_unlock(struct ctdb_record_handle *rec, TDB_DATA data)
-{
- struct ctdb_call_state *state;
- int res;
+ state->reqid = idr_get_new(ctdb->idr, state, 0xFFFF);
+ state->status = status;
+ state->state = CTDB_STATUS_WAIT;
+
+ ZERO_STRUCT(r);
+ r.hdr.length = sizeof(r);
+ r.hdr.ctdb_magic = CTDB_MAGIC;
+ r.hdr.ctdb_version = CTDB_VERSION;
+ r.hdr.operation = CTDB_REQ_STATUS;
+ r.hdr.reqid = state->reqid;
- state = ctdb_client_store_unlock_send(rec, rec, data);
- res = ctdb_client_store_unlock_recv(state, rec);
+ ret = ctdb_client_queue_pkt(ctdb, &(r.hdr));
+ if (ret != 0) {
+ talloc_free(state);
+ return -1;
+ }
+
+ while (state->state == CTDB_STATUS_WAIT) {
+ event_loop_once(ctdb->ev);
+ }
- talloc_free(rec);
+ talloc_free(state);
- return res;
+ return 0;
}
+
diff --git a/source4/cluster/ctdb/common/ctdb_daemon.c b/source4/cluster/ctdb/common/ctdb_daemon.c
index 945030d77e..ff3431a392 100644
--- a/source4/cluster/ctdb/common/ctdb_daemon.c
+++ b/source4/cluster/ctdb/common/ctdb_daemon.c
@@ -25,9 +25,23 @@
#include "lib/util/dlinklist.h"
#include "system/network.h"
#include "system/filesys.h"
+#include "system/wait.h"
#include "../include/ctdb.h"
#include "../include/ctdb_private.h"
+/*
+ structure describing a connected client in the daemon
+ */
+struct ctdb_client {
+ struct ctdb_context *ctdb;
+ int fd;
+ struct ctdb_queue *queue;
+};
+
+
+
+static void daemon_incoming_packet(void *, uint8_t *, uint32_t );
+
static void ctdb_main_loop(struct ctdb_context *ctdb)
{
ctdb->methods->start(ctdb);
@@ -35,7 +49,7 @@ static void ctdb_main_loop(struct ctdb_context *ctdb)
/* go into a wait loop to allow other nodes to complete */
event_loop_wait(ctdb->ev);
- printf("event_loop_wait() returned. this should not happen\n");
+ DEBUG(0,("event_loop_wait() returned. this should not happen\n"));
exit(1);
}
@@ -47,16 +61,27 @@ static void set_non_blocking(int fd)
fcntl(fd, F_SETFL, v | O_NONBLOCK);
}
+static void block_signal(int signum)
+{
+ struct sigaction act;
+
+ memset(&act, 0, sizeof(act));
+
+ act.sa_handler = SIG_IGN;
+ sigemptyset(&act.sa_mask);
+ sigaddset(&act.sa_mask, signum);
+ sigaction(signum, &act, NULL);
+}
+
/*
- structure describing a connected client in the daemon
+ send a packet to a client
*/
-struct ctdb_client {
- struct ctdb_context *ctdb;
- int fd;
- struct ctdb_queue *queue;
-};
-
+static int daemon_queue_send(struct ctdb_client *client, struct ctdb_req_header *hdr)
+{
+ client->ctdb->status.client_packets_sent++;
+ return ctdb_queue_send(client->queue, (uint8_t *)hdr, hdr->length);
+}
/*
message handler for when we are in daemon mode. This redirects the message
@@ -73,10 +98,9 @@ static void daemon_message_handler(struct ctdb_context *ctdb, uint32_t srvid,
len = offsetof(struct ctdb_req_message, data) + data.dsize;
r = ctdbd_allocate_pkt(ctdb, len);
-/*XXX cant use this since it returns an int CTDB_NO_MEMORY(ctdb, r);*/
talloc_set_name_const(r, "req_message packet");
- ZERO_STRUCT(*r);
+ memset(r, 0, offsetof(struct ctdb_req_message, data));
r->hdr.length = len;
r->hdr.ctdb_magic = CTDB_MAGIC;
@@ -85,11 +109,10 @@ static void daemon_message_handler(struct ctdb_context *ctdb, uint32_t srvid,
r->srvid = srvid;
r->datalen = data.dsize;
memcpy(&r->data[0], data.dptr, data.dsize);
-
- ctdb_queue_send(client->queue, (uint8_t *)&r->hdr, len);
+
+ daemon_queue_send(client, &r->hdr);
talloc_free(r);
- return;
}
@@ -105,187 +128,122 @@ static void daemon_request_register_message_handler(struct ctdb_client *client,
c->srvid, daemon_message_handler,
client);
if (res != 0) {
- printf("Failed to register handler %u in daemon\n", c->srvid);
+ DEBUG(0,(__location__ " Failed to register handler %u in daemon\n",
+ c->srvid));
+ } else {
+ DEBUG(2,(__location__ " Registered message handler for srvid=%u\n",
+ c->srvid));
}
}
-static struct ctdb_call_state *ctdb_fetch_lock_send(struct ctdb_db_context *ctdb_db,
- TALLOC_CTX *mem_ctx,
- TDB_DATA key, TDB_DATA *data)
+/*
+ called when the daemon gets a shutdown request from a client
+ */
+static void daemon_request_shutdown(struct ctdb_client *client,
+ struct ctdb_req_shutdown *f)
{
- struct ctdb_call *call;
- struct ctdb_record_handle *rec;
- struct ctdb_call_state *state;
+ struct ctdb_context *ctdb = talloc_get_type(client->ctdb, struct ctdb_context);
+ int len;
+ uint32_t node;
- rec = talloc(mem_ctx, struct ctdb_record_handle);
- CTDB_NO_MEMORY_NULL(ctdb_db->ctdb, rec);
+ /* we dont send to ourself so we can already count one daemon as
+ exiting */
+ ctdb->num_finished++;
-
- call = talloc(rec, struct ctdb_call);
- ZERO_STRUCT(*call);
- call->call_id = CTDB_FETCH_FUNC;
- call->key = key;
- call->flags = CTDB_IMMEDIATE_MIGRATION;
+ /* loop over all nodes of the cluster */
+ for (node=0; node<ctdb->num_nodes;node++) {
+ struct ctdb_req_finished *rf;
- rec->ctdb_db = ctdb_db;
- rec->key = key;
- rec->key.dptr = talloc_memdup(rec, key.dptr, key.dsize);
- rec->data = data;
+ /* dont send a message to ourself */
+ if (ctdb->vnn == node) {
+ continue;
+ }
- state = ctdb_call_send(ctdb_db, call);
- state->fetch_private = rec;
+ len = sizeof(struct ctdb_req_finished);
+ rf = ctdb->methods->allocate_pkt(ctdb, len);
+ CTDB_NO_MEMORY_FATAL(ctdb, rf);
+ talloc_set_name_const(rf, "ctdb_req_finished packet");
- return state;
-}
+ ZERO_STRUCT(*rf);
+ rf->hdr.length = len;
+ rf->hdr.ctdb_magic = CTDB_MAGIC;
+ rf->hdr.ctdb_version = CTDB_VERSION;
+ rf->hdr.operation = CTDB_REQ_FINISHED;
+ rf->hdr.destnode = node;
+ rf->hdr.srcnode = ctdb->vnn;
+ rf->hdr.reqid = 0;
-struct client_fetch_lock_data {
- struct ctdb_client *client;
- uint32_t reqid;
-};
-static void daemon_fetch_lock_complete(struct ctdb_call_state *state)
-{
- struct ctdb_reply_fetch_lock *r;
- struct client_fetch_lock_data *data = talloc_get_type(state->async.private_data, struct client_fetch_lock_data);
- struct ctdb_client *client = talloc_get_type(data->client, struct ctdb_client);
- int length, res;
+ ctdb_queue_packet(ctdb, &(rf->hdr));
- length = offsetof(struct ctdb_reply_fetch_lock, data) + state->call.reply_data.dsize;
- r = ctdbd_allocate_pkt(client->ctdb, length);
- if (r == NULL) {
- printf("Failed to allocate reply_call in ctdb daemon\n");
- return;
+ talloc_free(rf);
}
- ZERO_STRUCT(*r);
- r->hdr.length = length;
- r->hdr.ctdb_magic = CTDB_MAGIC;
- r->hdr.ctdb_version = CTDB_VERSION;
- r->hdr.operation = CTDB_REPLY_FETCH_LOCK;
- r->hdr.reqid = data->reqid;
- r->state = state->state;
- r->datalen = state->call.reply_data.dsize;
- memcpy(&r->data[0], state->call.reply_data.dptr, r->datalen);
- res = ctdb_queue_send(client->queue, (uint8_t *)&r->hdr, r->hdr.length);
- if (res != 0) {
- printf("Failed to queue packet from daemon to client\n");
+ /* wait until all nodes have are prepared to shutdown */
+ while (ctdb->num_finished != ctdb->num_nodes) {
+ event_loop_once(ctdb->ev);
}
- talloc_free(r);
-}
-/*
- called when the daemon gets a fetch lock request from a client
- */
-static void daemon_request_fetch_lock(struct ctdb_client *client,
- struct ctdb_req_fetch_lock *f)
-{
- struct ctdb_call_state *state;
- TDB_DATA key, *data;
- struct ctdb_db_context *ctdb_db;
- struct client_fetch_lock_data *fl_data;
-
- ctdb_db = find_ctdb_db(client->ctdb, f->db_id);
-
- key.dsize = f->keylen;
- key.dptr = &f->key[0];
-
- data = talloc(client, TDB_DATA);
- data->dptr = NULL;
- data->dsize = 0;
+ /* all daemons have requested to finish - we now exit */
+ DEBUG(1,("All daemons finished - exiting\n"));
+ _exit(0);
+}
- state = ctdb_fetch_lock_send(ctdb_db, client, key, data);
- talloc_steal(state, data);
- fl_data = talloc(state, struct client_fetch_lock_data);
- fl_data->client = client;
- fl_data->reqid = f->hdr.reqid;
- state->async.fn = daemon_fetch_lock_complete;
- state->async.private_data = fl_data;
-}
/*
- called when the daemon gets a store unlock request from a client
-
- this would never block?
+ called when the daemon gets a connect wait request from a client
*/
-static void daemon_request_store_unlock(struct ctdb_client *client,
- struct ctdb_req_store_unlock *f)
+static void daemon_request_connect_wait(struct ctdb_client *client,
+ struct ctdb_req_connect_wait *c)
{
- struct ctdb_db_context *ctdb_db;
- struct ctdb_reply_store_unlock r;
- uint32_t caller = ctdb_get_vnn(client->ctdb);
- struct ctdb_ltdb_header header;
- TDB_DATA key, data;
+ struct ctdb_reply_connect_wait r;
int res;
- ctdb_db = find_ctdb_db(client->ctdb, f->db_id);
-
- /* write the data to ltdb */
- key.dsize = f->keylen;
- key.dptr = &f->data[0];
- res = ctdb_ltdb_fetch(ctdb_db, key, &header, NULL, NULL);
- if (res) {
- ctdb_set_error(ctdb_db->ctdb, "Fetch of locally held record failed");
- res = -1;
- goto done;
- }
- if (header.laccessor != caller) {
- header.lacount = 0;
- }
- header.laccessor = caller;
- header.lacount++;
- data.dsize = f->datalen;
- data.dptr = &f->data[f->keylen];
- res = ctdb_ltdb_store(ctdb_db, key, &header, data);
- if ( res != 0) {
- ctdb_set_error(ctdb_db->ctdb, "ctdb_call tdb_store failed\n");
- }
-
+ /* first wait - in the daemon */
+ ctdb_daemon_connect_wait(client->ctdb);
-done:
/* now send the reply */
ZERO_STRUCT(r);
r.hdr.length = sizeof(r);
r.hdr.ctdb_magic = CTDB_MAGIC;
r.hdr.ctdb_version = CTDB_VERSION;
- r.hdr.operation = CTDB_REPLY_STORE_UNLOCK;
- r.hdr.reqid = f->hdr.reqid;
- r.state = res;
+ r.hdr.operation = CTDB_REPLY_CONNECT_WAIT;
+ r.vnn = ctdb_get_vnn(client->ctdb);
+ r.num_connected = client->ctdb->num_connected;
- res = ctdb_queue_send(client->queue, (uint8_t *)&r.hdr, r.hdr.length);
+ res = daemon_queue_send(client, &r.hdr);
if (res != 0) {
- printf("Failed to queue a store unlock response\n");
+ DEBUG(0,(__location__ " Failed to queue a connect wait response\n"));
return;
}
}
+
/*
- called when the daemon gets a connect wait request from a client
+ called when the daemon gets a status request from a client
*/
-static void daemon_request_connect_wait(struct ctdb_client *client,
- struct ctdb_req_connect_wait *c)
+static void daemon_request_status(struct ctdb_client *client,
+ struct ctdb_req_status *c)
{
- struct ctdb_reply_connect_wait r;
+ struct ctdb_reply_status r;
int res;
- /* first wait - in the daemon */
- ctdb_daemon_connect_wait(client->ctdb);
-
/* now send the reply */
ZERO_STRUCT(r);
r.hdr.length = sizeof(r);
r.hdr.ctdb_magic = CTDB_MAGIC;
r.hdr.ctdb_version = CTDB_VERSION;
- r.hdr.operation = CTDB_REPLY_CONNECT_WAIT;
- r.vnn = ctdb_get_vnn(client->ctdb);
- r.num_connected = client->ctdb->num_connected;
+ r.hdr.operation = CTDB_REPLY_STATUS;
+ r.hdr.reqid = c->hdr.reqid;
+ r.status = client->ctdb->status;
- res = ctdb_queue_send(client->queue, (uint8_t *)&r.hdr, r.hdr.length);
+ res = daemon_queue_send(client, &r.hdr);
if (res != 0) {
- printf("Failed to queue a connect wait response\n");
+ DEBUG(0,(__location__ " Failed to queue a connect wait response\n"));
return;
}
}
@@ -323,11 +281,69 @@ static void daemon_request_message_from_client(struct ctdb_client *client,
res = ctdb_daemon_send_message(client->ctdb, c->hdr.destnode,
c->srvid, data);
if (res != 0) {
- printf("Failed to send message to remote node %u\n",
- c->hdr.destnode);
+ DEBUG(0,(__location__ " Failed to send message to remote node %u\n",
+ c->hdr.destnode));
+ }
+}
+
+
+struct daemon_call_state {
+ struct ctdb_client *client;
+ uint32_t reqid;
+ struct ctdb_call *call;
+ struct timeval start_time;
+};
+
+/*
+ complete a call from a client
+*/
+static void daemon_call_from_client_callback(struct ctdb_call_state *state)
+{
+ struct daemon_call_state *dstate = talloc_get_type(state->async.private_data,
+ struct daemon_call_state);
+ struct ctdb_reply_call *r;
+ int res;
+ uint32_t length;
+ struct ctdb_client *client = dstate->client;
+
+ talloc_steal(client, dstate);
+ talloc_steal(dstate, dstate->call);
+
+ res = ctdb_daemon_call_recv(state, dstate->call);
+ if (res != 0) {
+ DEBUG(0, (__location__ " ctdbd_call_recv() returned error\n"));
+ client->ctdb->status.pending_calls--;
+ ctdb_latency(&client->ctdb->status.max_call_latency, dstate->start_time);
+ return;
}
+
+ length = offsetof(struct ctdb_reply_call, data) + dstate->call->reply_data.dsize;
+ r = ctdbd_allocate_pkt(dstate, length);
+ if (r == NULL) {
+ DEBUG(0, (__location__ " Failed to allocate reply_call in ctdb daemon\n"));
+ client->ctdb->status.pending_calls--;
+ ctdb_latency(&client->ctdb->status.max_call_latency, dstate->start_time);
+ return;
+ }
+ memset(r, 0, offsetof(struct ctdb_reply_call, data));
+ r->hdr.length = length;
+ r->hdr.ctdb_magic = CTDB_MAGIC;
+ r->hdr.ctdb_version = CTDB_VERSION;
+ r->hdr.operation = CTDB_REPLY_CALL;
+ r->hdr.reqid = dstate->reqid;
+ r->datalen = dstate->call->reply_data.dsize;
+ memcpy(&r->data[0], dstate->call->reply_data.dptr, r->datalen);
+
+ res = daemon_queue_send(client, &r->hdr);
+ if (res != 0) {
+ DEBUG(0, (__location__ "Failed to queue packet from daemon to client\n"));
+ }
+ ctdb_latency(&client->ctdb->status.max_call_latency, dstate->start_time);
+ talloc_free(dstate);
+ client->ctdb->status.pending_calls--;
}
+
/*
this is called when the ctdb daemon received a ctdb request call
from a local client over the unix domain socket
@@ -337,103 +353,159 @@ static void daemon_request_call_from_client(struct ctdb_client *client,
{
struct ctdb_call_state *state;
struct ctdb_db_context *ctdb_db;
- struct ctdb_call call;
- struct ctdb_reply_call *r;
- int res;
- uint32_t length;
+ struct daemon_call_state *dstate;
+ struct ctdb_call *call;
+ struct ctdb_ltdb_header header;
+ TDB_DATA key, data;
+ int ret;
+ struct ctdb_context *ctdb = client->ctdb;
+
+ ctdb->status.total_calls++;
+ ctdb->status.pending_calls++;
ctdb_db = find_ctdb_db(client->ctdb, c->db_id);
if (!ctdb_db) {
- printf("Unknown database in request. db_id==0x%08x",c->db_id);
+ DEBUG(0, (__location__ " Unknown database in request. db_id==0x%08x",
+ c->db_id));
+ ctdb->status.pending_calls--;
return;
}
- ZERO_STRUCT(call);
- call.call_id = c->callid;
- call.key.dptr = c->data;
- call.key.dsize = c->keylen;
- call.call_data.dptr = c->data + c->keylen;
- call.call_data.dsize = c->calldatalen;
+ key.dptr = c->data;
+ key.dsize = c->keylen;
- state = ctdb_call_send(ctdb_db, &call);
+ ret = ctdb_ltdb_lock_fetch_requeue(ctdb_db, key, &header,
+ (struct ctdb_req_header *)c, &data,
+ daemon_incoming_packet, client);
+ if (ret == -2) {
+ /* will retry later */
+ ctdb->status.pending_calls--;
+ return;
+ }
-/* XXX this must be converted to fully async */
- res = ctdb_call_recv(state, &call);
- if (res != 0) {
- printf("ctdbd_call_recv() returned error\n");
- exit(1);
+ if (ret != 0) {
+ DEBUG(0,(__location__ " Unable to fetch record\n"));
+ ctdb->status.pending_calls--;
+ return;
}
- length = offsetof(struct ctdb_reply_call, data) + call.reply_data.dsize;
- r = ctdbd_allocate_pkt(client->ctdb, length);
- if (r == NULL) {
- printf("Failed to allocate reply_call in ctdb daemon\n");
+ dstate = talloc(client, struct daemon_call_state);
+ if (dstate == NULL) {
+ ctdb_ltdb_unlock(ctdb_db, key);
+ DEBUG(0,(__location__ " Unable to allocate dstate\n"));
+ ctdb->status.pending_calls--;
+ return;
+ }
+ dstate->start_time = timeval_current();
+ dstate->client = client;
+ dstate->reqid = c->hdr.reqid;
+ talloc_steal(dstate, data.dptr);
+
+ call = dstate->call = talloc_zero(dstate, struct ctdb_call);
+ if (call == NULL) {
+ ctdb_ltdb_unlock(ctdb_db, key);
+ DEBUG(0,(__location__ " Unable to allocate call\n"));
+ ctdb->status.pending_calls--;
+ ctdb_latency(&ctdb->status.max_call_latency, dstate->start_time);
return;
}
- ZERO_STRUCT(*r);
- r->hdr.length = length;
- r->hdr.ctdb_magic = CTDB_MAGIC;
- r->hdr.ctdb_version = CTDB_VERSION;
- r->hdr.operation = CTDB_REPLY_CALL;
- r->hdr.reqid = c->hdr.reqid;
- r->datalen = call.reply_data.dsize;
- memcpy(&r->data[0], call.reply_data.dptr, r->datalen);
- res = ctdb_queue_send(client->queue, (uint8_t *)&r, r->hdr.length);
- if (res != 0) {
- printf("Failed to queue packet from daemon to client\n");
+ call->call_id = c->callid;
+ call->key = key;
+ call->call_data.dptr = c->data + c->keylen;
+ call->call_data.dsize = c->calldatalen;
+ call->flags = c->flags;
+
+ if (header.dmaster == ctdb->vnn && !(ctdb->flags & CTDB_FLAG_SELF_CONNECT)) {
+ state = ctdb_call_local_send(ctdb_db, call, &header, &data);
+ } else {
+ state = ctdb_daemon_call_send_remote(ctdb_db, call, &header);
}
- talloc_free(r);
-}
+ ctdb_ltdb_unlock(ctdb_db, key);
+
+ if (state == NULL) {
+ DEBUG(0,(__location__ " Unable to setup call send\n"));
+ ctdb->status.pending_calls--;
+ ctdb_latency(&ctdb->status.max_call_latency, dstate->start_time);
+ return;
+ }
+ talloc_steal(state, dstate);
+ talloc_steal(client, state);
+
+ state->async.fn = daemon_call_from_client_callback;
+ state->async.private_data = dstate;
+}
/* data contains a packet from the client */
-static void client_incoming_packet(struct ctdb_client *client, void *data, size_t nread)
+static void daemon_incoming_packet(void *p, uint8_t *data, uint32_t nread)
{
- struct ctdb_req_header *hdr = data;
+ struct ctdb_req_header *hdr = (struct ctdb_req_header *)data;
+ struct ctdb_client *client = talloc_get_type(p, struct ctdb_client);
+ TALLOC_CTX *tmp_ctx;
+ struct ctdb_context *ctdb = client->ctdb;
+
+ /* place the packet as a child of a tmp_ctx. We then use
+ talloc_free() below to free it. If any of the calls want
+ to keep it, then they will steal it somewhere else, and the
+ talloc_free() will be a no-op */
+ tmp_ctx = talloc_new(client);
+ talloc_steal(tmp_ctx, hdr);
if (hdr->ctdb_magic != CTDB_MAGIC) {
- ctdb_set_error(client->ctdb, "Non CTDB packet rejected\n");
+ ctdb_set_error(client->ctdb, "Non CTDB packet rejected in daemon\n");
goto done;
}
if (hdr->ctdb_version != CTDB_VERSION) {
- ctdb_set_error(client->ctdb, "Bad CTDB version 0x%x rejected\n", hdr->ctdb_version);
+ ctdb_set_error(client->ctdb, "Bad CTDB version 0x%x rejected in daemon\n", hdr->ctdb_version);
goto done;
}
switch (hdr->operation) {
case CTDB_REQ_CALL:
+ ctdb->status.client.req_call++;
daemon_request_call_from_client(client, (struct ctdb_req_call *)hdr);
break;
case CTDB_REQ_REGISTER:
+ ctdb->status.client.req_register++;
daemon_request_register_message_handler(client,
(struct ctdb_req_register *)hdr);
break;
case CTDB_REQ_MESSAGE:
+ ctdb->status.client.req_message++;
daemon_request_message_from_client(client, (struct ctdb_req_message *)hdr);
break;
case CTDB_REQ_CONNECT_WAIT:
+ ctdb->status.client.req_connect_wait++;
daemon_request_connect_wait(client, (struct ctdb_req_connect_wait *)hdr);
break;
- case CTDB_REQ_FETCH_LOCK:
- daemon_request_fetch_lock(client, (struct ctdb_req_fetch_lock *)hdr);
+
+ case CTDB_REQ_SHUTDOWN:
+ ctdb->status.client.req_shutdown++;
+ daemon_request_shutdown(client, (struct ctdb_req_shutdown *)hdr);
break;
- case CTDB_REQ_STORE_UNLOCK:
- daemon_request_store_unlock(client, (struct ctdb_req_store_unlock *)hdr);
+
+ case CTDB_REQ_STATUS:
+ ctdb->status.client.req_status++;
+ daemon_request_status(client, (struct ctdb_req_status *)hdr);
break;
+
default:
- printf("daemon: unrecognized operation:%d\n",hdr->operation);
+ DEBUG(0,(__location__ " daemon: unrecognized operation %d\n",
+ hdr->operation));
}
done:
- talloc_free(data);
+ talloc_free(tmp_ctx);
}
-
-static void ctdb_client_read_cb(uint8_t *data, size_t cnt, void *args)
+/*
+ called when the daemon gets a incoming packet
+ */
+static void ctdb_daemon_read_cb(uint8_t *data, size_t cnt, void *args)
{
struct ctdb_client *client = talloc_get_type(args, struct ctdb_client);
struct ctdb_req_header *hdr;
@@ -443,13 +515,15 @@ static void ctdb_client_read_cb(uint8_t *data, size_t cnt, void *args)
return;
}
+ client->ctdb->status.client_packets_recv++;
+
if (cnt < sizeof(*hdr)) {
- ctdb_set_error(client->ctdb, "Bad packet length %d\n", cnt);
+ ctdb_set_error(client->ctdb, "Bad packet length %d in daemon\n", cnt);
return;
}
hdr = (struct ctdb_req_header *)data;
if (cnt != hdr->length) {
- ctdb_set_error(client->ctdb, "Bad header length %d expected %d\n",
+ ctdb_set_error(client->ctdb, "Bad header length %d expected %d\n in daemon",
hdr->length, cnt);
return;
}
@@ -460,12 +534,16 @@ static void ctdb_client_read_cb(uint8_t *data, size_t cnt, void *args)
}
if (hdr->ctdb_version != CTDB_VERSION) {
- ctdb_set_error(client->ctdb, "Bad CTDB version 0x%x rejected\n", hdr->ctdb_version);
+ ctdb_set_error(client->ctdb, "Bad CTDB version 0x%x rejected in daemon\n", hdr->ctdb_version);
return;
}
+ DEBUG(3,(__location__ " client request %d of type %d length %d from "
+ "node %d to %d\n", hdr->reqid, hdr->operation, hdr->length,
+ hdr->srcnode, hdr->destnode));
+
/* it is the responsibility of the incoming packet function to free 'data' */
- client_incoming_packet(client, data, cnt);
+ daemon_incoming_packet(client, data, cnt);
}
static void ctdb_accept_client(struct event_context *ev, struct fd_event *fde,
@@ -490,7 +568,7 @@ static void ctdb_accept_client(struct event_context *ev, struct fd_event *fde,
client->fd = fd;
client->queue = ctdb_queue_setup(ctdb, client, fd, CTDB_DS_ALIGNMENT,
- ctdb_client_read_cb, client);
+ ctdb_daemon_read_cb, client);
talloc_set_destructor(client, ctdb_client_destructor);
}
@@ -507,10 +585,10 @@ static void ctdb_read_from_parent(struct event_context *ev, struct fd_event *fde
/* XXX this is a good place to try doing some cleaning up before exiting */
cnt = read(*fd, &buf, 1);
if (cnt==0) {
- printf("parent process exited. filedescriptor dissappeared\n");
+ DEBUG(2,(__location__ " parent process exited. filedescriptor dissappeared\n"));
exit(1);
} else {
- printf("ctdb: did not expect data from parent process\n");
+ DEBUG(0,(__location__ " ctdb: did not expect data from parent process\n"));
exit(1);
}
}
@@ -559,7 +637,7 @@ static int unlink_destructor(const char *name)
/*
start the protocol going
*/
-int ctdbd_start(struct ctdb_context *ctdb)
+int ctdb_start(struct ctdb_context *ctdb)
{
pid_t pid;
static int fd[2];
@@ -575,18 +653,18 @@ int ctdbd_start(struct ctdb_context *ctdb)
/* create a unix domain stream socket to listen to */
res = ux_socket_bind(ctdb);
if (res!=0) {
- printf("Failed to open CTDB unix domain socket\n");
+ DEBUG(0,(__location__ " Failed to open CTDB unix domain socket\n"));
exit(10);
}
res = pipe(&fd[0]);
if (res) {
- printf("Failed to open pipe for CTDB\n");
+ DEBUG(0,(__location__ " Failed to open pipe for CTDB\n"));
exit(1);
}
pid = fork();
if (pid==-1) {
- printf("Failed to fork CTDB daemon\n");
+ DEBUG(0,(__location__ " Failed to fork CTDB daemon\n"));
exit(1);
}
@@ -597,12 +675,14 @@ int ctdbd_start(struct ctdb_context *ctdb)
return 0;
}
+ block_signal(SIGPIPE);
+
/* ensure the socket is deleted on exit of the daemon */
domain_socket_name = talloc_strdup(talloc_autofree_context(), ctdb->daemon.name);
talloc_set_destructor(domain_socket_name, unlink_destructor);
close(fd[1]);
- ctdb_clear_flags(ctdb, CTDB_FLAG_DAEMON_MODE);
+
ctdb->ev = event_context_init(NULL);
fde = event_add_fd(ctdb->ev, ctdb, fd[0], EVENT_FD_READ, ctdb_read_from_parent, &fd[0]);
fde = event_add_fd(ctdb->ev, ctdb, ctdb->daemon.sd, EVENT_FD_READ, ctdb_accept_client, ctdb);
@@ -614,18 +694,18 @@ int ctdbd_start(struct ctdb_context *ctdb)
/*
allocate a packet for use in client<->daemon communication
*/
-void *ctdbd_allocate_pkt(struct ctdb_context *ctdb, size_t len)
+void *ctdbd_allocate_pkt(TALLOC_CTX *mem_ctx, size_t len)
{
int size;
size = (len+(CTDB_DS_ALIGNMENT-1)) & ~(CTDB_DS_ALIGNMENT-1);
- return talloc_size(ctdb, size);
+ return talloc_size(mem_ctx, size);
}
-int ctdb_daemon_set_message_handler(struct ctdb_context *ctdb, uint32_t srvid,
- ctdb_message_fn_t handler,
- void *private_data)
+/*
+ called when a CTDB_REQ_FINISHED packet comes in
+*/
+void ctdb_request_finished(struct ctdb_context *ctdb, struct ctdb_req_header *hdr)
{
- return ctdb_register_message_handler(ctdb, ctdb, srvid, handler, private_data);
+ ctdb->num_finished++;
}
-
diff --git a/source4/cluster/ctdb/common/ctdb_lockwait.c b/source4/cluster/ctdb/common/ctdb_lockwait.c
new file mode 100644
index 0000000000..36b08796be
--- /dev/null
+++ b/source4/cluster/ctdb/common/ctdb_lockwait.c
@@ -0,0 +1,139 @@
+/*
+ wait for a tdb chain lock
+
+ Copyright (C) Andrew Tridgell 2006
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2 of the License, or (at your option) any later version.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+*/
+
+#include "includes.h"
+#include "lib/events/events.h"
+#include "system/filesys.h"
+#include "system/wait.h"
+#include "popt.h"
+#include "db_wrap.h"
+#include "lib/tdb/include/tdb.h"
+#include "../include/ctdb_private.h"
+
+
+struct lockwait_handle {
+ struct ctdb_context *ctdb;
+ struct fd_event *fde;
+ int fd[2];
+ pid_t child;
+ void *private_data;
+ void (*callback)(void *);
+ struct timeval start_time;
+};
+
+static void lockwait_handler(struct event_context *ev, struct fd_event *fde,
+ uint16_t flags, void *private_data)
+{
+ struct lockwait_handle *h = talloc_get_type(private_data,
+ struct lockwait_handle);
+ void (*callback)(void *) = h->callback;
+ void *p = h->private_data;
+ pid_t child = h->child;
+ talloc_set_destructor(h, NULL);
+ close(h->fd[0]);
+ ctdb_latency(&h->ctdb->status.max_lockwait_latency, h->start_time);
+ h->ctdb->status.pending_lockwait_calls--;
+ talloc_free(h);
+ callback(p);
+ waitpid(child, NULL, 0);
+}
+
+static int lockwait_destructor(struct lockwait_handle *h)
+{
+ h->ctdb->status.pending_lockwait_calls--;
+ close(h->fd[0]);
+ kill(h->child, SIGKILL);
+ waitpid(h->child, NULL, 0);
+ return 0;
+}
+
+/*
+ setup a non-blocking chainlock on a tdb record. If this function
+ returns NULL then it could not get the chainlock. Otherwise it
+ returns a opaque handle, and will call callback() once it has
+ managed to get the chainlock. You can cancel it by using talloc_free
+ on the returned handle.
+
+ It is the callers responsibility to unlock the chainlock once
+ acquired
+ */
+struct lockwait_handle *ctdb_lockwait(struct ctdb_db_context *ctdb_db,
+ TDB_DATA key,
+ void (*callback)(void *private_data),
+ void *private_data)
+{
+ struct lockwait_handle *result;
+ int ret;
+
+ ctdb_db->ctdb->status.lockwait_calls++;
+ ctdb_db->ctdb->status.pending_lockwait_calls++;
+
+ if (!(result = talloc_zero(ctdb_db, struct lockwait_handle))) {
+ ctdb_db->ctdb->status.pending_lockwait_calls--;
+ return NULL;
+ }
+
+ ret = pipe(result->fd);
+
+ if (ret != 0) {
+ talloc_free(result);
+ ctdb_db->ctdb->status.pending_lockwait_calls--;
+ return NULL;
+ }
+
+ result->child = fork();
+
+ if (result->child == (pid_t)-1) {
+ close(result->fd[0]);
+ close(result->fd[1]);
+ talloc_free(result);
+ ctdb_db->ctdb->status.pending_lockwait_calls--;
+ return NULL;
+ }
+
+ result->callback = callback;
+ result->private_data = private_data;
+ result->ctdb = ctdb_db->ctdb;
+
+ if (result->child == 0) {
+ close(result->fd[0]);
+ /*
+ * Do we need a tdb_reopen here?
+ */
+ tdb_chainlock(ctdb_db->ltdb->tdb, key);
+ _exit(0);
+ }
+
+ close(result->fd[1]);
+ talloc_set_destructor(result, lockwait_destructor);
+
+ result->fde = event_add_fd(ctdb_db->ctdb->ev, result, result->fd[0],
+ EVENT_FD_READ, lockwait_handler,
+ (void *)result);
+ if (result->fde == NULL) {
+ talloc_free(result);
+ ctdb_db->ctdb->status.pending_lockwait_calls--;
+ return NULL;
+ }
+
+ result->start_time = timeval_current();
+
+ return result;
+}
diff --git a/source4/cluster/ctdb/common/ctdb_ltdb.c b/source4/cluster/ctdb/common/ctdb_ltdb.c
index 785ccad9b3..cb07a72375 100644
--- a/source4/cluster/ctdb/common/ctdb_ltdb.c
+++ b/source4/cluster/ctdb/common/ctdb_ltdb.c
@@ -45,9 +45,8 @@ struct ctdb_db_context *ctdb_db_handle(struct ctdb_context *ctdb, const char *na
/*
this is the dummy null procedure that all databases support
*/
-static int ctdb_fetch_func(struct ctdb_call_info *call)
+static int ctdb_null_func(struct ctdb_call_info *call)
{
- call->reply_data = &call->record_data;
return 0;
}
@@ -82,10 +81,21 @@ struct ctdb_db_context *ctdb_attach(struct ctdb_context *ctdb, const char *name,
}
}
+ if (mkdir(ctdb->db_directory, 0700) == -1 && errno != EEXIST) {
+ DEBUG(0,(__location__ " Unable to create ctdb directory '%s'\n",
+ ctdb->db_directory));
+ talloc_free(ctdb_db);
+ return NULL;
+ }
+
+ /* add the node id to the database name, so when we run on loopback
+ we don't conflict in the local filesystem */
+ name = talloc_asprintf(ctdb_db, "%s/%s", ctdb->db_directory, name);
+
/* when we have a separate daemon this will need to be a real
file, not a TDB_INTERNAL, so the parent can access it to
for ltdb bypass */
- ctdb_db->ltdb = tdb_wrap_open(ctdb, name, 0, TDB_INTERNAL, open_flags, mode);
+ ctdb_db->ltdb = tdb_wrap_open(ctdb, name, 0, TDB_CLEAR_IF_FIRST, open_flags, mode);
if (ctdb_db->ltdb == NULL) {
ctdb_set_error(ctdb, "Failed to open tdb %s\n", name);
talloc_free(ctdb_db);
@@ -94,9 +104,10 @@ struct ctdb_db_context *ctdb_attach(struct ctdb_context *ctdb, const char *name,
/*
- all databases support the "fetch" function. we need this in order to do forced migration of records
+ all databases support the "null" function. we need this in
+ order to do forced migration of records
*/
- ret = ctdb_set_call(ctdb_db, ctdb_fetch_func, CTDB_FETCH_FUNC);
+ ret = ctdb_set_call(ctdb_db, ctdb_null_func, CTDB_NULL_FUNC);
if (ret != 0) {
talloc_free(ctdb_db);
return NULL;
@@ -145,13 +156,15 @@ int ctdb_ltdb_fetch(struct ctdb_db_context *ctdb_db,
rec = tdb_fetch(ctdb_db->ltdb->tdb, key);
if (rec.dsize < sizeof(*header)) {
+ TDB_DATA d2;
/* return an initial header */
- free(rec.dptr);
+ if (rec.dptr) free(rec.dptr);
ltdb_initial_header(ctdb_db, key, header);
+ ZERO_STRUCT(d2);
if (data) {
- data->dptr = NULL;
- data->dsize = 0;
+ *data = d2;
}
+ ctdb_ltdb_store(ctdb_db, key, header, d2);
return 0;
}
@@ -215,3 +228,118 @@ int ctdb_ltdb_unlock(struct ctdb_db_context *ctdb_db, TDB_DATA key)
return tdb_chainunlock(ctdb_db->ltdb->tdb, key);
}
+struct lock_fetch_state {
+ struct ctdb_context *ctdb;
+ void (*recv_pkt)(void *, uint8_t *, uint32_t);
+ void *recv_context;
+ struct ctdb_req_header *hdr;
+};
+
+/*
+ called when we should retry the operation
+ */
+static void lock_fetch_callback(void *p)
+{
+ struct lock_fetch_state *state = talloc_get_type(p, struct lock_fetch_state);
+ state->recv_pkt(state->recv_context, (uint8_t *)state->hdr, state->hdr->length);
+ talloc_free(state);
+ DEBUG(2,(__location__ " PACKET REQUEUED\n"));
+}
+
+
+/*
+ do a non-blocking ltdb_lock, deferring this ctdb request until we
+ have the chainlock
+
+ It does the following:
+
+ 1) tries to get the chainlock. If it succeeds, then it returns 0
+
+ 2) if it fails to get a chainlock immediately then it sets up a
+ non-blocking chainlock via ctdb_lockwait, and when it gets the
+ chainlock it re-submits this ctdb request to the main packet
+ receive function
+
+ This effectively queues all ctdb requests that cannot be
+ immediately satisfied until it can get the lock. This means that
+ the main ctdb daemon will not block waiting for a chainlock held by
+ a client
+
+ There are 3 possible return values:
+
+ 0: means that it got the lock immediately.
+ -1: means that it failed to get the lock, and won't retry
+ -2: means that it failed to get the lock immediately, but will retry
+ */
+int ctdb_ltdb_lock_requeue(struct ctdb_db_context *ctdb_db,
+ TDB_DATA key, struct ctdb_req_header *hdr,
+ void (*recv_pkt)(void *, uint8_t *, uint32_t ),
+ void *recv_context)
+{
+ int ret;
+ struct tdb_context *tdb = ctdb_db->ltdb->tdb;
+ struct lockwait_handle *h;
+ struct lock_fetch_state *state;
+
+ ret = tdb_chainlock_nonblock(tdb, key);
+
+ if (ret != 0 &&
+ !(errno == EACCES || errno == EAGAIN || errno == EDEADLK)) {
+ /* a hard failure - don't try again */
+ return -1;
+ }
+
+ /* when torturing, ensure we test the contended path */
+ if ((ctdb_db->ctdb->flags & CTDB_FLAG_TORTURE) &&
+ random() % 5 == 0) {
+ ret = -1;
+ tdb_chainunlock(tdb, key);
+ }
+
+ /* first the non-contended path */
+ if (ret == 0) {
+ return 0;
+ }
+
+ state = talloc(ctdb_db, struct lock_fetch_state);
+ state->ctdb = ctdb_db->ctdb;
+ state->hdr = hdr;
+ state->recv_pkt = recv_pkt;
+ state->recv_context = recv_context;
+
+ /* now the contended path */
+ h = ctdb_lockwait(ctdb_db, key, lock_fetch_callback, state);
+ if (h == NULL) {
+ tdb_chainunlock(tdb, key);
+ return -1;
+ }
+
+ /* we need to move the packet off the temporary context in ctdb_recv_pkt(),
+ so it won't be freed yet */
+ talloc_steal(state, hdr);
+ talloc_steal(state, h);
+
+ /* now tell the caller than we will retry asynchronously */
+ return -2;
+}
+
+/*
+ a varient of ctdb_ltdb_lock_requeue that also fetches the record
+ */
+int ctdb_ltdb_lock_fetch_requeue(struct ctdb_db_context *ctdb_db,
+ TDB_DATA key, struct ctdb_ltdb_header *header,
+ struct ctdb_req_header *hdr, TDB_DATA *data,
+ void (*recv_pkt)(void *, uint8_t *, uint32_t ),
+ void *recv_context)
+{
+ int ret;
+
+ ret = ctdb_ltdb_lock_requeue(ctdb_db, key, hdr, recv_pkt, recv_context);
+ if (ret == 0) {
+ ret = ctdb_ltdb_fetch(ctdb_db, key, header, hdr, data);
+ if (ret != 0) {
+ ctdb_ltdb_unlock(ctdb_db, key);
+ }
+ }
+ return ret;
+}
diff --git a/source4/cluster/ctdb/common/ctdb_message.c b/source4/cluster/ctdb/common/ctdb_message.c
index ad88ec22d2..70fcf00c4d 100644
--- a/source4/cluster/ctdb/common/ctdb_message.c
+++ b/source4/cluster/ctdb/common/ctdb_message.c
@@ -42,7 +42,8 @@ static int ctdb_dispatch_message(struct ctdb_context *ctdb, uint32_t srvid, TDB_
if (ml->srvid == srvid || ml->srvid == CTDB_SRVID_ALL) break;
}
if (ml == NULL) {
- printf("daemon vnn:%d no msg handler for srvid=%u\n", ctdb_get_vnn(ctdb), srvid);
+ DEBUG(1,(__location__ " daemon vnn:%d no msg handler for srvid=%u\n",
+ ctdb_get_vnn(ctdb), srvid));
/* no registered message handler */
return -1;
}
@@ -86,7 +87,7 @@ static void ctdb_local_message_trigger(struct event_context *ev, struct timed_ev
res = ctdb_dispatch_message(m->ctdb, m->srvid, m->data);
if (res != 0) {
- printf("Failed to dispatch message for srvid=%u\n", m->srvid);
+ DEBUG(0, (__location__ " Failed to dispatch message for srvid=%u\n", m->srvid));
}
talloc_free(m);
}
@@ -147,18 +148,6 @@ int ctdb_daemon_send_message(struct ctdb_context *ctdb, uint32_t vnn,
return 0;
}
-/*
- send a ctdb message
-*/
-int ctdb_send_message(struct ctdb_context *ctdb, uint32_t vnn,
- uint32_t srvid, TDB_DATA data)
-{
- if (ctdb->flags & CTDB_FLAG_DAEMON_MODE) {
- return ctdb_client_send_message(ctdb, vnn, srvid, data);
- }
- return ctdb_daemon_send_message(ctdb, vnn, srvid, data);
-}
-
/*
when a client goes away, we need to remove its srvid handler from the list
diff --git a/source4/cluster/ctdb/common/ctdb_util.c b/source4/cluster/ctdb/common/ctdb_util.c
index cf0c72a58b..9a5e51bfa0 100644
--- a/source4/cluster/ctdb/common/ctdb_util.c
+++ b/source4/cluster/ctdb/common/ctdb_util.c
@@ -25,6 +25,8 @@
#include "system/filesys.h"
#include "../include/ctdb_private.h"
+int LogLevel;
+
/*
return error string for last error
*/
@@ -100,3 +102,29 @@ uint32_t ctdb_hash(const TDB_DATA *key)
return (1103515243 * value + 12345);
}
+
+/*
+ a type checking varient of idr_find
+ */
+void *_idr_find_type(struct idr_context *idp, int id, const char *type, const char *location)
+{
+ void *p = idr_find(idp, id);
+ if (p && talloc_check_name(p, type) == NULL) {
+ DEBUG(0,("%s idr_find_type expected type %s but got %s\n",
+ location, type, talloc_get_name(p)));
+ return NULL;
+ }
+ return p;
+}
+
+
+/*
+ update a max latency number
+ */
+void ctdb_latency(double *latency, struct timeval t)
+{
+ double l = timeval_elapsed(&t);
+ if (l > *latency) {
+ *latency = l;
+ }
+}
diff --git a/source4/cluster/ctdb/config.mk b/source4/cluster/ctdb/config.mk
index 0e0629bfb1..076562297f 100644
--- a/source4/cluster/ctdb/config.mk
+++ b/source4/cluster/ctdb/config.mk
@@ -24,6 +24,7 @@ OBJ_FILES = \
common/ctdb_util.o \
common/ctdb_io.o \
common/ctdb_client.o \
- common/ctdb_daemon.o
+ common/ctdb_daemon.o \
+ common/ctdb_lockwait.o
PUBLIC_DEPENDENCIES = LIBTDB LIBTALLOC
PRIVATE_DEPENDENCIES = ctdb_tcp
diff --git a/source4/cluster/ctdb/ctdb_cluster.c b/source4/cluster/ctdb/ctdb_cluster.c
index c9233696e8..e3e60685b0 100644
--- a/source4/cluster/ctdb/ctdb_cluster.c
+++ b/source4/cluster/ctdb/ctdb_cluster.c
@@ -104,12 +104,30 @@ static void *ctdb_backend_handle(struct cluster_ops *ops)
return (void *)state->ctdb;
}
+struct ctdb_handler_state {
+ struct cluster_state *state;
+ cluster_message_fn_t handler;
+ struct messaging_context *msg;
+};
+
/*
dispatch incoming ctdb messages
*/
static void ctdb_message_handler(struct ctdb_context *ctdb, uint32_t srvid,
TDB_DATA data, void *private)
{
+ struct ctdb_handler_state *s = talloc_get_type(private,
+ struct ctdb_handler_state);
+ DATA_BLOB blob;
+ blob.data = data.dptr;
+ blob.length = data.dsize;
+ s->handler(s->msg, blob);
+}
+
+static int ctdb_handler_destructor(struct ctdb_handler_state *s)
+{
+ /* XXX - tell ctdb to de-register the message handler */
+ return 0;
}
/*
@@ -120,7 +138,28 @@ static NTSTATUS ctdb_message_init(struct cluster_ops *ops,
struct server_id server,
cluster_message_fn_t handler)
{
- /* nothing to do - we're now using the wildcard message handler */
+ struct cluster_state *state = ops->private;
+ struct ctdb_handler_state *h;
+ int ret;
+
+ h = talloc(msg, struct ctdb_handler_state);
+ NT_STATUS_HAVE_NO_MEMORY(h);
+
+ h->state = state;
+ h->handler = handler;
+ h->msg = msg;
+
+ talloc_set_destructor(h, ctdb_handler_destructor);
+
+ /* setup a message handler */
+ ret = ctdb_set_message_handler(state->ctdb, server.id,
+ ctdb_message_handler, h);
+ if (ret == -1) {
+ DEBUG(0,("ctdb_set_message_handler failed - %s\n",
+ ctdb_errstr(state->ctdb)));
+ exit(1);
+ }
+
return NT_STATUS_OK;
}
@@ -198,11 +237,6 @@ void cluster_ctdb_init(struct event_context *ev, const char *model)
ctdb_set_flags(state->ctdb, CTDB_FLAG_SELF_CONNECT);
}
- if (strcmp(model, "single") != 0) {
- DEBUG(0,("Enabling ctdb daemon mode\n"));
- ctdb_set_flags(state->ctdb, CTDB_FLAG_DAEMON_MODE);
- }
-
lacount = lp_parm_int(-1, "ctdb", "maxlacount", -1);
if (lacount != -1) {
ctdb_set_max_lacount(state->ctdb, lacount);
@@ -215,6 +249,12 @@ void cluster_ctdb_init(struct event_context *ev, const char *model)
goto failed;
}
+ ret = ctdb_set_tdb_dir(state->ctdb, lp_lockdir());
+ if (ret == -1) {
+ DEBUG(0,("ctdb_set_tdb_dir failed - %s\n", ctdb_errstr(state->ctdb)));
+ goto failed;
+ }
+
/* tell ctdb what nodes are available */
ret = ctdb_set_nlist(state->ctdb, nlist);
if (ret == -1) {
@@ -230,14 +270,13 @@ void cluster_ctdb_init(struct event_context *ev, const char *model)
if (ctdb_db == NULL) goto failed;
}
- /* setup a global message handler */
- ret = ctdb_set_message_handler(state->ctdb, CTDB_SRVID_ALL,
- ctdb_message_handler, state);
- if (ret == -1) {
- DEBUG(0,("ctdb_set_message_handler failed - %s\n",
- ctdb_errstr(state->ctdb)));
- exit(1);
- }
+ cluster_set_ops(&cluster_ctdb_ops);
+
+ /* nasty hack for now ... */
+ {
+ void brl_ctdb_init_ops(void);
+ brl_ctdb_init_ops();
+ }
/* start the protocol running */
ret = ctdb_start(state->ctdb);
@@ -250,8 +289,6 @@ void cluster_ctdb_init(struct event_context *ev, const char *model)
outside of test code) */
ctdb_connect_wait(state->ctdb);
- cluster_set_ops(&cluster_ctdb_ops);
-
return;
failed:
diff --git a/source4/cluster/ctdb/direct/ctdbd.c b/source4/cluster/ctdb/direct/ctdbd.c
index 700416e5e9..674b54d47a 100644
--- a/source4/cluster/ctdb/direct/ctdbd.c
+++ b/source4/cluster/ctdb/direct/ctdbd.c
@@ -23,6 +23,7 @@
#include "system/filesys.h"
#include "popt.h"
#include "system/wait.h"
+#include "cmdline.h"
static void block_signal(int signum)
{
@@ -43,21 +44,12 @@ static void block_signal(int signum)
int main(int argc, const char *argv[])
{
struct ctdb_context *ctdb;
- const char *nlist = NULL;
- const char *transport = "tcp";
- const char *myaddress = NULL;
- int self_connect=0;
- int daemon_mode=0;
const char *db_list = "test.tdb";
char *s, *tok;
struct poptOption popt_options[] = {
POPT_AUTOHELP
- { "nlist", 0, POPT_ARG_STRING, &nlist, 0, "node list file", "filename" },
- { "listen", 0, POPT_ARG_STRING, &myaddress, 0, "address to listen on", "address" },
- { "transport", 0, POPT_ARG_STRING, &transport, 0, "protocol transport", NULL },
- { "self-connect", 0, POPT_ARG_NONE, &self_connect, 0, "enable self connect", "boolean" },
- { "daemon", 0, POPT_ARG_NONE, &daemon_mode, 0, "spawn a ctdb daemon", "boolean" },
+ POPT_CTDB_CMDLINE
{ "dblist", 0, POPT_ARG_STRING, &db_list, 0, "list of databases", NULL },
POPT_TABLEEND
};
@@ -86,48 +78,11 @@ int main(int argc, const char *argv[])
while (extra_argv[extra_argc]) extra_argc++;
}
- if (nlist == NULL || myaddress == NULL) {
- printf("You must provide a node list with --nlist and an address with --listen\n");
- exit(1);
- }
-
block_signal(SIGPIPE);
ev = event_context_init(NULL);
- /* initialise ctdb */
- ctdb = ctdb_init(ev);
- if (ctdb == NULL) {
- printf("Failed to init ctdb\n");
- exit(1);
- }
-
- if (self_connect) {
- ctdb_set_flags(ctdb, CTDB_FLAG_SELF_CONNECT);
- }
- if (daemon_mode) {
- ctdb_set_flags(ctdb, CTDB_FLAG_DAEMON_MODE);
- }
-
- ret = ctdb_set_transport(ctdb, transport);
- if (ret == -1) {
- printf("ctdb_set_transport failed - %s\n", ctdb_errstr(ctdb));
- exit(1);
- }
-
- /* tell ctdb what address to listen on */
- ret = ctdb_set_address(ctdb, myaddress);
- if (ret == -1) {
- printf("ctdb_set_address failed - %s\n", ctdb_errstr(ctdb));
- exit(1);
- }
-
- /* tell ctdb what nodes are available */
- ret = ctdb_set_nlist(ctdb, nlist);
- if (ret == -1) {
- printf("ctdb_set_nlist failed - %s\n", ctdb_errstr(ctdb));
- exit(1);
- }
+ ctdb = ctdb_cmdline_init(ev);
/* attach to the list of databases */
s = talloc_strdup(ctdb, db_list);
diff --git a/source4/cluster/ctdb/direct/ctdbd.sh b/source4/cluster/ctdb/direct/ctdbd.sh
index 366226260b..7224bdec6d 100755
--- a/source4/cluster/ctdb/direct/ctdbd.sh
+++ b/source4/cluster/ctdb/direct/ctdbd.sh
@@ -3,6 +3,6 @@
killall -q ctdbd
echo "Starting 2 ctdb daemons"
-bin/ctdbd --nlist direct/nodes.txt --listen 127.0.0.2:9001 --daemon &
-bin/ctdbd --nlist direct/nodes.txt --listen 127.0.0.1:9001 --daemon &
+bin/ctdbd --nlist direct/nodes.txt --listen 127.0.0.2:9001 &
+bin/ctdbd --nlist direct/nodes.txt --listen 127.0.0.1:9001 &
diff --git a/source4/cluster/ctdb/direct/ctdbd_test.c b/source4/cluster/ctdb/direct/ctdbd_test.c
index 019cdad30d..00b9f967df 100644
--- a/source4/cluster/ctdb/direct/ctdbd_test.c
+++ b/source4/cluster/ctdb/direct/ctdbd_test.c
@@ -184,78 +184,32 @@ uint32_t ctdb_hash(const TDB_DATA *key)
return (1103515243 * value + 12345);
}
-void fetch_lock(int fd, uint32_t db_id, TDB_DATA key)
-{
- struct ctdb_req_fetch_lock *req;
- struct ctdb_reply_fetch_lock *rep;
- uint32_t length;
- int len, cnt, tot;
-
- len = offsetof(struct ctdb_req_fetch_lock, key) + key.dsize;
- req = malloc(len);
-
- req->hdr.length = len;
- req->hdr.ctdb_magic = CTDB_MAGIC;
- req->hdr.ctdb_version = CTDB_VERSION;
- req->hdr.operation = CTDB_REQ_FETCH_LOCK;
- req->hdr.reqid = 1;
- req->db_id = db_id;
- req->keylen = key.dsize;
- memcpy(&req->key[0], key.dptr, key.dsize);
+/* ask the daemon to migrate a record over so that the local node is the dmaster the client must not have the record locked when performing this call.
- cnt=write(fd, req, len);
-
-
- /* wait fot the reply */
- /* read the 4 bytes of length for the pdu */
- cnt=0;
- tot=4;
- while(cnt!=tot){
- int numread;
- numread=read(fd, ((char *)&length)+cnt, tot-cnt);
- if(numread>0){
- cnt+=numread;
- }
- }
- /* read the rest of the pdu */
- rep = malloc(length);
- tot=length;
- while(cnt!=tot){
- int numread;
- numread=read(fd, ((char *)rep)+cnt, tot-cnt);
- if(numread>0){
- cnt+=numread;
- }
- }
- printf("fetch lock reply: state:%d datalen:%d\n",rep->state,rep->datalen);
- if(!rep->datalen){
- printf("no data\n");
- } else {
- printf("data:[%s]\n",rep->data);
- }
-
-}
-
-void store_unlock(int fd, uint32_t db_id, TDB_DATA key, TDB_DATA data)
+ when the daemon has responded this node should be the dmaster (unless it has migrated off again)
+ */
+void fetch_record(int fd, uint32_t db_id, TDB_DATA key)
{
- struct ctdb_req_store_unlock *req;
- struct ctdb_reply_store_unlock *rep;
+ struct ctdb_req_call *req;
+ struct ctdb_reply_call *rep;
uint32_t length;
int len, cnt, tot;
- len = offsetof(struct ctdb_req_store_unlock, data) + key.dsize + data.dsize;
+ len = offsetof(struct ctdb_req_call, data) + key.dsize;
req = malloc(len);
req->hdr.length = len;
req->hdr.ctdb_magic = CTDB_MAGIC;
req->hdr.ctdb_version = CTDB_VERSION;
- req->hdr.operation = CTDB_REQ_STORE_UNLOCK;
+ req->hdr.operation = CTDB_REQ_CALL;
req->hdr.reqid = 1;
+
+ req->flags = CTDB_IMMEDIATE_MIGRATION;
req->db_id = db_id;
+ req->callid = CTDB_NULL_FUNC;
req->keylen = key.dsize;
- req->datalen = data.dsize;
+ req->calldatalen = 0;
memcpy(&req->data[0], key.dptr, key.dsize);
- memcpy(&req->data[key.dsize], data.dptr, data.dsize);
cnt=write(fd, req, len);
@@ -281,7 +235,7 @@ void store_unlock(int fd, uint32_t db_id, TDB_DATA key, TDB_DATA data)
cnt+=numread;
}
}
- printf("store unlock reply: state:%d\n",rep->state);
+ printf("fetch record reply: operation:%d state:%d\n",rep->hdr.operation,rep->status);
}
int main(int argc, const char *argv[])
@@ -291,8 +245,7 @@ int main(int argc, const char *argv[])
struct ctdb_req_message *reply;
TDB_DATA dbname;
uint32_t db_id;
- TDB_DATA key, data;
- char str[256];
+ TDB_DATA key;
/* open the socket to talk to the local ctdb daemon */
fd=ux_socket_connect(CTDB_SOCKET);
@@ -338,25 +291,12 @@ int main(int argc, const char *argv[])
printf("the has for the database id is 0x%08x\n",db_id);
printf("\n");
- /* send a fetch lock */
+ /* send a request to migrate a record to the local node */
key.dptr=discard_const("TestKey");
key.dsize=strlen((const char *)(key.dptr));
printf("fetch the test key:[%s]\n",key.dptr);
- fetch_lock(fd, db_id, key);
- printf("\n");
-
- /* send a store unlock */
- sprintf(str,"TestData_%d",getpid());
- data.dptr=discard_const(str);
- data.dsize=strlen((const char *)(data.dptr));
- printf("store new data==[%s] for this record\n",data.dptr);
- store_unlock(fd, db_id, key, data);
- printf("\n");
-
- /* send a fetch lock */
- printf("fetch the test key:[%s]\n",key.dptr);
- fetch_lock(fd, db_id, key);
+ fetch_record(fd, db_id, key);
printf("\n");
diff --git a/source4/cluster/ctdb/ib/ibw_ctdb_init.c b/source4/cluster/ctdb/ib/ibw_ctdb_init.c
index 3b0c6ad28f..b4adfe6f12 100644
--- a/source4/cluster/ctdb/ib/ibw_ctdb_init.c
+++ b/source4/cluster/ctdb/ib/ibw_ctdb_init.c
@@ -158,10 +158,10 @@ static int ctdb_ibw_queue_pkt(struct ctdb_node *node, uint8_t *data, uint32_t le
/*
* transport packet allocator - allows transport to control memory for packets
*/
-static void *ctdb_ibw_allocate_pkt(struct ctdb_context *ctdb, size_t size)
+static void *ctdb_ibw_allocate_pkt(TALLOC_CTX *mem_ctx, size_t size)
{
/* TODO: use ibw_alloc_send_buf instead... */
- return talloc_size(ctdb, size);
+ return talloc_size(mem_ctx, size);
}
#ifdef __NOTDEF__
diff --git a/source4/cluster/ctdb/include/cmdline.h b/source4/cluster/ctdb/include/cmdline.h
new file mode 100644
index 0000000000..785595ee6c
--- /dev/null
+++ b/source4/cluster/ctdb/include/cmdline.h
@@ -0,0 +1,7 @@
+
+extern struct poptOption popt_ctdb_cmdline[];
+
+#define POPT_CTDB_CMDLINE { NULL, 0, POPT_ARG_INCLUDE_TABLE, popt_ctdb_cmdline, 0, "Common ctdb test options:", NULL },
+
+struct ctdb_context *ctdb_cmdline_init(struct event_context *ev);
+
diff --git a/source4/cluster/ctdb/include/ctdb.h b/source4/cluster/ctdb/include/ctdb.h
index f24f1000a4..cb765884b6 100644
--- a/source4/cluster/ctdb/include/ctdb.h
+++ b/source4/cluster/ctdb/include/ctdb.h
@@ -50,10 +50,7 @@ struct ctdb_call_info {
ctdb flags
*/
#define CTDB_FLAG_SELF_CONNECT (1<<0)
-/* fork off a separate ctdb daemon */
-#define CTDB_FLAG_DAEMON_MODE (1<<1)
-/* for test code only: make ctdb_start() block until all nodes are connected */
-#define CTDB_FLAG_CONNECT_WAIT (1<<2)
+#define CTDB_FLAG_TORTURE (1<<1)
/*
@@ -74,6 +71,11 @@ struct ctdb_context *ctdb_init(struct event_context *ev);
int ctdb_set_transport(struct ctdb_context *ctdb, const char *transport);
/*
+ set the directory for the local databases
+*/
+int ctdb_set_tdb_dir(struct ctdb_context *ctdb, const char *dir);
+
+/*
set some flags
*/
void ctdb_set_flags(struct ctdb_context *ctdb, unsigned flags);
@@ -142,9 +144,10 @@ int ctdb_call(struct ctdb_db_context *ctdb_db, struct ctdb_call *call);
void ctdb_connect_wait(struct ctdb_context *ctdb);
/*
- wait until we're the only node left
+ initiate an ordered ctdb cluster shutdown
+ this function will never return
*/
-void ctdb_wait_loop(struct ctdb_context *ctdb);
+void ctdb_shutdown(struct ctdb_context *ctdb);
/* return vnn of this node */
uint32_t ctdb_get_vnn(struct ctdb_context *ctdb);
@@ -163,8 +166,8 @@ int ctdb_set_message_handler(struct ctdb_context *ctdb, uint32_t srvid,
int ctdb_call(struct ctdb_db_context *ctdb_db, struct ctdb_call *call);
-struct ctdb_call_state *ctdb_call_send(struct ctdb_db_context *ctdb_db, struct ctdb_call *call);
-int ctdb_call_recv(struct ctdb_call_state *state, struct ctdb_call *call);
+struct ctdb_client_call_state *ctdb_call_send(struct ctdb_db_context *ctdb_db, struct ctdb_call *call);
+int ctdb_call_recv(struct ctdb_client_call_state *state, struct ctdb_call *call);
/* send a ctdb message */
int ctdb_send_message(struct ctdb_context *ctdb, uint32_t vnn,
@@ -172,19 +175,29 @@ int ctdb_send_message(struct ctdb_context *ctdb, uint32_t vnn,
/*
- fetch and lock a ctdb record. Underneath this will force the
+ Fetch a ctdb record from a remote node
+ . Underneath this will force the
dmaster for the record to be moved to the local node.
- The lock is released when is talloc_free() is called on the
- returned ctdb_record_handle.
*/
-struct ctdb_record_handle *ctdb_fetch_lock(struct ctdb_db_context *ctdb_db, TALLOC_CTX *mem_ctx, TDB_DATA key, TDB_DATA *data);
+struct ctdb_record_handle *ctdb_fetch_lock(struct ctdb_db_context *ctdb_db, TALLOC_CTX *mem_ctx,
+ TDB_DATA key, TDB_DATA *data);
+
/*
- change the data in a record held with a ctdb_record_handle
- if the new data is zero length, this implies a delete of the record
- */
-int ctdb_store_unlock(struct ctdb_record_handle *rec, TDB_DATA data);
+ do a fetch lock from a client to the local daemon
+*/
+#define FETCH_LOCK_SUCCESS 0
+#define FETCH_LOCK_LOCKFAILED 1
+#define FETCH_LOCK_FETCHFAILED 2
+#define FETCH_LOCK_DMASTERFAILED 3
+
+int ctdb_client_fetch_lock(struct ctdb_db_context *ctdb_db,
+ TALLOC_CTX *mem_ctx,
+ TDB_DATA key, TDB_DATA *data);
+
+
+int ctdb_record_store(struct ctdb_record_handle *h, TDB_DATA data);
int ctdb_register_message_handler(struct ctdb_context *ctdb,
TALLOC_CTX *mem_ctx,
@@ -194,4 +207,10 @@ int ctdb_register_message_handler(struct ctdb_context *ctdb,
struct ctdb_db_context *find_ctdb_db(struct ctdb_context *ctdb, uint32_t id);
+
+struct ctdb_context *ctdb_cmdline_client(struct event_context *ev, const char *ctdb_socket);
+
+struct ctdb_status;
+int ctdb_status(struct ctdb_context *ctdb, struct ctdb_status *status);
+
#endif
diff --git a/source4/cluster/ctdb/include/ctdb_private.h b/source4/cluster/ctdb/include/ctdb_private.h
index c50b481cf3..a8f7b48f49 100644
--- a/source4/cluster/ctdb/include/ctdb_private.h
+++ b/source4/cluster/ctdb/include/ctdb_private.h
@@ -30,8 +30,8 @@
#define CTDB_DS_ALIGNMENT 8
+#define CTDB_NULL_FUNC 0xf0000001
-#define CTDB_FETCH_FUNC 0xf0000001
/*
an installed ctdb remote call
*/
@@ -50,6 +50,11 @@ struct ctdb_address {
int port;
};
+/*
+ check a vnn is valid
+ */
+#define ctdb_validate_vnn(ctdb, vnn) (((uint32_t)(vnn)) < (ctdb)->num_nodes)
+
/* called from the queue code when a packet comes in. Called with data==NULL
on error */
@@ -68,12 +73,6 @@ struct ctdb_node {
uint32_t vnn;
};
-struct ctdb_record_handle {
- struct ctdb_db_context *ctdb_db;
- TDB_DATA key;
- TDB_DATA *data;
-};
-
/*
transport specific methods
*/
@@ -81,7 +80,7 @@ struct ctdb_methods {
int (*start)(struct ctdb_context *); /* start protocol processing */
int (*add_node)(struct ctdb_node *); /* setup a new node */
int (*queue_pkt)(struct ctdb_node *, uint8_t *data, uint32_t length);
- void *(*allocate_pkt)(struct ctdb_context *, size_t );
+ void *(*allocate_pkt)(TALLOC_CTX *mem_ctx, size_t );
};
/*
@@ -115,14 +114,51 @@ struct ctdb_daemon_data {
struct ctdb_queue *queue;
};
+/*
+ ctdb status information
+ */
+struct ctdb_status {
+ uint32_t client_packets_sent;
+ uint32_t client_packets_recv;
+ uint32_t node_packets_sent;
+ uint32_t node_packets_recv;
+ struct {
+ uint32_t req_call;
+ uint32_t reply_call;
+ uint32_t reply_redirect;
+ uint32_t req_dmaster;
+ uint32_t reply_dmaster;
+ uint32_t reply_error;
+ uint32_t req_message;
+ uint32_t req_finished;
+ } count;
+ struct {
+ uint32_t req_call;
+ uint32_t req_message;
+ uint32_t req_finished;
+ uint32_t req_register;
+ uint32_t req_connect_wait;
+ uint32_t req_shutdown;
+ uint32_t req_status;
+ } client;
+ uint32_t total_calls;
+ uint32_t pending_calls;
+ uint32_t lockwait_calls;
+ uint32_t pending_lockwait_calls;
+ double max_call_latency;
+ double max_lockwait_latency;
+};
+
/* main state of the ctdb daemon */
struct ctdb_context {
struct event_context *ev;
struct ctdb_address address;
const char *name;
+ const char *db_directory;
uint32_t vnn; /* our own vnn */
uint32_t num_nodes;
uint32_t num_connected;
+ uint32_t num_finished;
unsigned flags;
struct idr_context *idr;
struct ctdb_node **nodes; /* array of nodes in the cluster - indexed by vnn */
@@ -134,6 +170,7 @@ struct ctdb_context {
struct ctdb_db_context *db_list;
struct ctdb_message_list *message_list;
struct ctdb_daemon_data daemon;
+ struct ctdb_status status;
};
struct ctdb_db_context {
@@ -192,7 +229,6 @@ struct ctdb_call_state {
struct ctdb_call call;
int redirect_count;
struct ctdb_ltdb_header header;
- void *fetch_private;
struct {
void (*fn)(struct ctdb_call_state *);
void *private_data;
@@ -200,6 +236,14 @@ struct ctdb_call_state {
};
+/* used for fetch_lock */
+struct ctdb_fetch_handle {
+ struct ctdb_db_context *ctdb_db;
+ TDB_DATA key;
+ TDB_DATA *data;
+ struct ctdb_ltdb_header header;
+};
+
/*
operation IDs
*/
@@ -211,15 +255,15 @@ enum ctdb_operation {
CTDB_REPLY_DMASTER = 4,
CTDB_REPLY_ERROR = 5,
CTDB_REQ_MESSAGE = 6,
+ CTDB_REQ_FINISHED = 7,
/* only used on the domain socket */
CTDB_REQ_REGISTER = 1000,
CTDB_REQ_CONNECT_WAIT = 1001,
CTDB_REPLY_CONNECT_WAIT = 1002,
- CTDB_REQ_FETCH_LOCK = 1003,
- CTDB_REPLY_FETCH_LOCK = 1004,
- CTDB_REQ_STORE_UNLOCK = 1005,
- CTDB_REPLY_STORE_UNLOCK = 1006
+ CTDB_REQ_SHUTDOWN = 1003,
+ CTDB_REQ_STATUS = 1004,
+ CTDB_REPLY_STATUS = 1005
};
#define CTDB_MAGIC 0x43544442 /* CTDB */
@@ -294,40 +338,31 @@ struct ctdb_req_message {
uint8_t data[1];
};
-struct ctdb_req_connect_wait {
+struct ctdb_req_finished {
struct ctdb_req_header hdr;
};
-struct ctdb_reply_connect_wait {
+struct ctdb_req_shutdown {
struct ctdb_req_header hdr;
- uint32_t vnn;
- uint32_t num_connected;
};
-struct ctdb_req_fetch_lock {
+struct ctdb_req_connect_wait {
struct ctdb_req_header hdr;
- uint32_t db_id;
- uint32_t keylen;
- uint8_t key[1]; /* key[] */
};
-struct ctdb_reply_fetch_lock {
+struct ctdb_reply_connect_wait {
struct ctdb_req_header hdr;
- uint32_t state;
- uint32_t datalen;
- uint8_t data[1]; /* data[] */
+ uint32_t vnn;
+ uint32_t num_connected;
};
-struct ctdb_req_store_unlock {
+
+struct ctdb_req_status {
struct ctdb_req_header hdr;
- uint32_t db_id;
- uint32_t keylen;
- uint32_t datalen;
- uint8_t data[1]; /* key[] and data[] */
};
-struct ctdb_reply_store_unlock {
+struct ctdb_reply_status {
struct ctdb_req_header hdr;
- uint32_t state;
+ struct ctdb_status status;
};
/* internal prototypes */
@@ -353,6 +388,16 @@ int ctdb_ltdb_fetch(struct ctdb_db_context *ctdb_db,
int ctdb_ltdb_store(struct ctdb_db_context *ctdb_db, TDB_DATA key,
struct ctdb_ltdb_header *header, TDB_DATA data);
void ctdb_queue_packet(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
+int ctdb_ltdb_lock_requeue(struct ctdb_db_context *ctdb_db,
+ TDB_DATA key, struct ctdb_req_header *hdr,
+ void (*recv_pkt)(void *, uint8_t *, uint32_t ),
+ void *recv_context);
+int ctdb_ltdb_lock_fetch_requeue(struct ctdb_db_context *ctdb_db,
+ TDB_DATA key, struct ctdb_ltdb_header *header,
+ struct ctdb_req_header *hdr, TDB_DATA *data,
+ void (*recv_pkt)(void *, uint8_t *, uint32_t ),
+ void *recv_context);
+void ctdb_recv_pkt(struct ctdb_context *ctdb, uint8_t *data, uint32_t length);
struct ctdb_call_state *ctdb_call_local_send(struct ctdb_db_context *ctdb_db,
struct ctdb_call *call,
@@ -386,7 +431,7 @@ struct ctdb_queue *ctdb_queue_setup(struct ctdb_context *ctdb,
/*
allocate a packet for use in client<->daemon communication
*/
-void *ctdbd_allocate_pkt(struct ctdb_context *ctdb, size_t len);
+void *ctdbd_allocate_pkt(TALLOC_CTX *mem_ctx, size_t len);
/*
@@ -437,16 +482,32 @@ int ctdb_daemon_send_message(struct ctdb_context *ctdb, uint32_t vnn,
void ctdb_daemon_connect_wait(struct ctdb_context *ctdb);
-/*
- do a fetch lock from a client to the local daemon
-*/
-struct ctdb_record_handle *ctdb_client_fetch_lock(struct ctdb_db_context *ctdb_db,
- TALLOC_CTX *mem_ctx,
- TDB_DATA key, TDB_DATA *data);
+struct lockwait_handle *ctdb_lockwait(struct ctdb_db_context *ctdb_db,
+ TDB_DATA key,
+ void (*callback)(void *), void *private_data);
-/*
- do a store unlock from a client to the local daemon
-*/
-int ctdb_client_store_unlock(struct ctdb_record_handle *rec, TDB_DATA data);
+struct ctdb_call_state *ctdb_daemon_call_send(struct ctdb_db_context *ctdb_db,
+ struct ctdb_call *call);
+
+int ctdb_daemon_call_recv(struct ctdb_call_state *state, struct ctdb_call *call);
+
+struct ctdb_call_state *ctdb_daemon_call_send_remote(struct ctdb_db_context *ctdb_db,
+ struct ctdb_call *call,
+ struct ctdb_ltdb_header *header);
+
+void ctdb_request_finished(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
+
+int ctdb_call_local(struct ctdb_db_context *ctdb_db, struct ctdb_call *call,
+ struct ctdb_ltdb_header *header, TDB_DATA *data,
+ uint32_t caller);
+
+void *_idr_find_type(struct idr_context *idp, int id, const char *type, const char *location);
+#define idr_find_type(idp, id, type) (type *)_idr_find_type(idp, id, #type, __location__)
+
+void ctdb_recv_raw_pkt(void *p, uint8_t *data, uint32_t length);
+
+int ctdb_socket_connect(struct ctdb_context *ctdb);
+
+void ctdb_latency(double *latency, struct timeval t);
#endif
diff --git a/source4/cluster/ctdb/include/includes.h b/source4/cluster/ctdb/include/includes.h
index 994c25452c..bffc66b358 100644
--- a/source4/cluster/ctdb/include/includes.h
+++ b/source4/cluster/ctdb/include/includes.h
@@ -6,15 +6,16 @@
#include "idtree.h"
#include "ctdb.h"
#include "lib/util/dlinklist.h"
+#include "lib/util/debug.h"
typedef bool BOOL;
#define True 1
#define False 0
-#define LogLevel 0
+extern int LogLevel;
-#define DEBUG(lvl, x) if ((lvl) <= LogLevel) (printf x)
+#define DEBUG(lvl, x) if ((lvl) <= LogLevel) (do_debug x)
#define _PUBLIC_
@@ -32,5 +33,5 @@ int timeval_compare(const struct timeval *tv1, const struct timeval *tv2);
struct timeval timeval_until(const struct timeval *tv1,
const struct timeval *tv2);
_PUBLIC_ struct timeval timeval_current_ofs(uint32_t secs, uint32_t usecs);
+double timeval_elapsed(struct timeval *tv);
char **file_lines_load(const char *fname, int *numlines, TALLOC_CTX *mem_ctx);
-
diff --git a/source4/cluster/ctdb/opendb_ctdb.c b/source4/cluster/ctdb/opendb_ctdb.c
index 6e2748291e..df399515eb 100644
--- a/source4/cluster/ctdb/opendb_ctdb.c
+++ b/source4/cluster/ctdb/opendb_ctdb.c
@@ -223,7 +223,8 @@ static NTSTATUS odb_push_record(struct odb_lock *lck, struct opendb_file *file)
if (!file->num_entries) {
dbuf.dptr = NULL;
dbuf.dsize = 0;
- ctdb_store_unlock(lck->rec, dbuf);
+ ctdb_record_store(lck->rec, dbuf);
+ talloc_free(lck->rec);
return NT_STATUS_OK;
}
@@ -233,7 +234,8 @@ static NTSTATUS odb_push_record(struct odb_lock *lck, struct opendb_file *file)
dbuf.dptr = blob.data;
dbuf.dsize = blob.length;
- ret = ctdb_store_unlock(lck->rec, dbuf);
+ ret = ctdb_record_store(lck->rec, dbuf);
+ talloc_free(lck->rec);
data_blob_free(&blob);
if (ret != 0) {
return NT_STATUS_INTERNAL_DB_CORRUPTION;
diff --git a/source4/cluster/ctdb/tcp/tcp_connect.c b/source4/cluster/ctdb/tcp/tcp_connect.c
index a1f2d331cf..4d9d8e8386 100644
--- a/source4/cluster/ctdb/tcp/tcp_connect.c
+++ b/source4/cluster/ctdb/tcp/tcp_connect.c
@@ -43,6 +43,10 @@ void ctdb_tcp_tnode_cb(uint8_t *data, size_t cnt, void *private_data)
struct ctdb_tcp_node *tnode = talloc_get_type(
node->private_data, struct ctdb_tcp_node);
+ if (data == NULL) {
+ node->ctdb->upcalls->node_dead(node);
+ }
+
/* start a new connect cycle to try to re-establish the
link */
close(tnode->fd);
diff --git a/source4/cluster/ctdb/tcp/tcp_init.c b/source4/cluster/ctdb/tcp/tcp_init.c
index 20b9bc9e33..9b54bb75ba 100644
--- a/source4/cluster/ctdb/tcp/tcp_init.c
+++ b/source4/cluster/ctdb/tcp/tcp_init.c
@@ -46,12 +46,6 @@ static int ctdb_tcp_start(struct ctdb_context *ctdb)
ctdb_tcp_node_connect, node);
}
- if (ctdb->flags&CTDB_FLAG_CONNECT_WAIT) {
- /* wait until all nodes are connected (should not be needed
- outide of test code) */
- ctdb_connect_wait(ctdb);
- }
-
return 0;
}
@@ -78,13 +72,13 @@ static int ctdb_tcp_add_node(struct ctdb_node *node)
/*
transport packet allocator - allows transport to control memory for packets
*/
-static void *ctdb_tcp_allocate_pkt(struct ctdb_context *ctdb, size_t size)
+static void *ctdb_tcp_allocate_pkt(TALLOC_CTX *mem_ctx, size_t size)
{
/* tcp transport needs to round to 8 byte alignment to ensure
that we can use a length header and 64 bit elements in
structures */
size = (size+(CTDB_TCP_ALIGNMENT-1)) & ~(CTDB_TCP_ALIGNMENT-1);
- return talloc_size(ctdb, size);
+ return talloc_size(mem_ctx, size);
}
diff --git a/source4/cluster/ctdb/tests/bench.sh b/source4/cluster/ctdb/tests/bench.sh
index 50e9e08f99..3d0696f171 100755
--- a/source4/cluster/ctdb/tests/bench.sh
+++ b/source4/cluster/ctdb/tests/bench.sh
@@ -3,7 +3,7 @@
killall -q ctdb_bench
echo "Trying 2 nodes"
-bin/ctdb_bench --nlist tests/nodes.txt --listen 127.0.0.2:9001 $* &
-bin/ctdb_bench --nlist tests/nodes.txt --listen 127.0.0.1:9001 $*
+$VALGRIND bin/ctdb_bench --nlist tests/nodes.txt --listen 127.0.0.2:9001 $* &
+$VALGRIND bin/ctdb_bench --nlist tests/nodes.txt --listen 127.0.0.1:9001 $*
+wait
-killall -q ctdb_bench
diff --git a/source4/cluster/ctdb/tests/bench1.sh b/source4/cluster/ctdb/tests/bench1.sh
index 3481d82be2..9adcf3198b 100755
--- a/source4/cluster/ctdb/tests/bench1.sh
+++ b/source4/cluster/ctdb/tests/bench1.sh
@@ -4,5 +4,4 @@ killall -q ctdb_bench
echo "Trying 1 nodes"
bin/ctdb_bench --nlist tests/1node.txt --listen 127.0.0.2:9001 $*
-
-killall -q ctdb_bench
+wait
diff --git a/source4/cluster/ctdb/tests/ctdb_bench.c b/source4/cluster/ctdb/tests/ctdb_bench.c
index 37c095c0c0..02fcc1f2d4 100644
--- a/source4/cluster/ctdb/tests/ctdb_bench.c
+++ b/source4/cluster/ctdb/tests/ctdb_bench.c
@@ -22,7 +22,7 @@
#include "lib/events/events.h"
#include "system/filesys.h"
#include "popt.h"
-#include "tests/cmdline.h"
+#include "cmdline.h"
#include <sys/time.h>
#include <time.h>
@@ -45,7 +45,6 @@ static double end_timer(void)
static int timelimit = 10;
static int num_records = 10;
static int num_msgs = 1;
-static int num_repeats = 100;
enum my_functions {FUNC_INCR=1, FUNC_FETCH=2};
@@ -78,51 +77,6 @@ static int fetch_func(struct ctdb_call_info *call)
return 0;
}
-/*
- benchmark incrementing an integer
-*/
-static void bench_incr(struct ctdb_context *ctdb, struct ctdb_db_context *ctdb_db)
-{
- int loops=0;
- int ret, i;
- struct ctdb_call call;
-
- ZERO_STRUCT(call);
-
- start_timer();
-
- while (1) {
- uint32_t v = loops % num_records;
-
- call.call_id = FUNC_INCR;
- call.key.dptr = (uint8_t *)&v;
- call.key.dsize = 4;
-
- for (i=0;i<num_repeats;i++) {
- ret = ctdb_call(ctdb_db, &call);
- if (ret != 0) {
- printf("incr call failed - %s\n", ctdb_errstr(ctdb));
- return;
- }
- }
- if (num_repeats * (++loops) % 10000 == 0) {
- if (end_timer() > timelimit) break;
- printf("Incr: %.2f ops/sec\r", num_repeats*loops/end_timer());
- fflush(stdout);
- }
- }
-
- call.call_id = FUNC_FETCH;
-
- ret = ctdb_call(ctdb_db, &call);
- if (ret == -1) {
- printf("ctdb_call FUNC_FETCH failed - %s\n", ctdb_errstr(ctdb));
- return;
- }
-
- printf("Incr: %.2f ops/sec (loops=%d val=%d)\n",
- num_repeats*loops/end_timer(), loops, *(uint32_t *)call.reply_data.dptr);
-}
static int msg_count;
static int msg_plus, msg_minus;
@@ -259,6 +213,7 @@ int main(int argc, const char *argv[])
bench_ring(ctdb, ev);
/* shut it down */
- talloc_free(ctdb);
+ ctdb_shutdown(ctdb);
+
return 0;
}
diff --git a/source4/cluster/ctdb/tests/ctdb_fetch.c b/source4/cluster/ctdb/tests/ctdb_fetch.c
index febaf13fe4..39bd861fc1 100644
--- a/source4/cluster/ctdb/tests/ctdb_fetch.c
+++ b/source4/cluster/ctdb/tests/ctdb_fetch.c
@@ -22,7 +22,7 @@
#include "lib/events/events.h"
#include "system/filesys.h"
#include "popt.h"
-#include "tests/cmdline.h"
+#include "cmdline.h"
#include <sys/time.h>
#include <time.h>
@@ -58,18 +58,18 @@ static int msg_count;
static void bench_fetch_1node(struct ctdb_context *ctdb)
{
TDB_DATA key, data, nulldata;
- struct ctdb_record_handle *rec;
struct ctdb_db_context *ctdb_db;
TALLOC_CTX *tmp_ctx = talloc_new(ctdb);
int dest, ret;
+ struct ctdb_record_handle *h;
- key.dptr = discard_const("testkey");
- key.dsize = strlen((const char *)key.dptr);
+ key.dptr = discard_const(TESTKEY);
+ key.dsize = strlen(TESTKEY);
ctdb_db = ctdb_db_handle(ctdb, "test.tdb");
- rec = ctdb_fetch_lock(ctdb_db, tmp_ctx, key, &data);
- if (rec == NULL) {
+ h = ctdb_fetch_lock(ctdb_db, tmp_ctx, key, &data);
+ if (h == NULL) {
printf("Failed to fetch record '%s' on node %d\n",
(const char *)key.dptr, ctdb_get_vnn(ctdb));
talloc_free(tmp_ctx);
@@ -88,7 +88,8 @@ static void bench_fetch_1node(struct ctdb_context *ctdb)
msg_count, ctdb_get_vnn(ctdb));
data.dsize = strlen((const char *)data.dptr)+1;
- ret = ctdb_store_unlock(rec, data);
+ ret = ctdb_record_store(h, data);
+ talloc_free(h);
if (ret != 0) {
printf("Failed to store record\n");
}
@@ -141,6 +142,10 @@ static void bench_fetch(struct ctdb_context *ctdb, struct event_context *ev)
printf("Event loop failed!\n");
break;
}
+
+ if (LogLevel > 9) {
+ talloc_report_null_full();
+ }
}
printf("Fetch: %.2f msgs/sec\n", msg_count/end_timer());
@@ -192,6 +197,8 @@ int main(int argc, const char *argv[])
}
}
+ /* talloc_enable_leak_report_full(); */
+
/* setup the remaining options for the main program to use */
extra_argv = poptGetArgs(pc);
if (extra_argv) {
@@ -240,7 +247,8 @@ int main(int argc, const char *argv[])
printf("DATA:\n%s\n", (char *)call.reply_data.dptr);
- /* shut it down */
- talloc_free(ctdb);
+ /* go into a wait loop to allow other nodes to complete */
+ ctdb_shutdown(ctdb);
+
return 0;
}
diff --git a/source4/cluster/ctdb/tests/ctdb_fetch1.c b/source4/cluster/ctdb/tests/ctdb_fetch1.c
index ffe9c7c946..b92e7fcda3 100644
--- a/source4/cluster/ctdb/tests/ctdb_fetch1.c
+++ b/source4/cluster/ctdb/tests/ctdb_fetch1.c
@@ -24,7 +24,8 @@
#include "popt.h"
#include "ctdb.h"
#include "ctdb_private.h"
-#include "tests/cmdline.h"
+#include "cmdline.h"
+#include <sys/time.h>
#define PARENT_SRVID 0
#define CHILD1_SRVID 1
@@ -32,6 +33,20 @@
int num_msg=0;
+static struct timeval tp1,tp2;
+
+static void start_timer(void)
+{
+ gettimeofday(&tp1,NULL);
+}
+
+static double end_timer(void)
+{
+ gettimeofday(&tp2,NULL);
+ return (tp2.tv_sec + (tp2.tv_usec*1.0e-6)) -
+ (tp1.tv_sec + (tp1.tv_usec*1.0e-6));
+}
+
static void message_handler(struct ctdb_context *ctdb, uint32_t srvid,
TDB_DATA data, void *private_data)
{
@@ -45,9 +60,9 @@ static void child_handler(struct ctdb_context *ctdb, uint32_t srvid,
void test1(struct ctdb_db_context *ctdb_db)
{
- struct ctdb_record_handle *rh;
TDB_DATA key, data, data2, store_data;
int ret;
+ struct ctdb_record_handle *h;
/*
test 1 : write data and read it back. should all be the same
@@ -55,13 +70,27 @@ void test1(struct ctdb_db_context *ctdb_db)
printf("Test1: write and verify we can read it back: ");
key.dptr = discard_const("Record");
key.dsize = strlen((const char *)key.dptr)+1;
- rh = ctdb_fetch_lock(ctdb_db, ctdb_db, key, &data);
+ h = ctdb_fetch_lock(ctdb_db, ctdb_db, key, &data);
+ if (h == NULL) {
+ printf("test1: ctdb_fetch_lock() failed\n");
+ exit(1);
+ }
store_data.dptr = discard_const("data to store");
store_data.dsize = strlen((const char *)store_data.dptr)+1;
- ret = ctdb_store_unlock(rh, store_data);
+ ret = ctdb_record_store(h, store_data);
+ talloc_free(h);
+ if (ret!=0) {
+ printf("test1: ctdb_record_store() failed\n");
+ exit(1);
+ }
+
+ h = ctdb_fetch_lock(ctdb_db, ctdb_db, key, &data2);
+ if (h == NULL) {
+ printf("test1: ctdb_fetch_lock() failed\n");
+ exit(1);
+ }
- rh = ctdb_fetch_lock(ctdb_db, ctdb_db, key, &data2);
/* hopefully data2 will now contain the record written above */
if (!strcmp("data to store", (const char *)data2.dptr)) {
printf("SUCCESS\n");
@@ -71,14 +100,19 @@ void test1(struct ctdb_db_context *ctdb_db)
}
/* just write it back to unlock it */
- ret = ctdb_store_unlock(rh, store_data);
+ ret = ctdb_record_store(h, store_data);
+ talloc_free(h);
+ if (ret!=0) {
+ printf("test1: ctdb_record_store() failed\n");
+ exit(1);
+ }
}
void child(int srvid, struct event_context *ev, struct ctdb_context *ctdb, struct ctdb_db_context *ctdb_db)
{
TDB_DATA data;
- struct ctdb_record_handle *rh;
TDB_DATA key, data2;
+ struct ctdb_record_handle *h;
data.dptr=discard_const("dummy message");
data.dsize=strlen((const char *)data.dptr)+1;
@@ -94,13 +128,23 @@ void child(int srvid, struct event_context *ev, struct ctdb_context *ctdb, struc
/* fetch and lock the record */
key.dptr = discard_const("Record");
key.dsize = strlen((const char *)key.dptr)+1;
- rh = ctdb_fetch_lock(ctdb_db, ctdb_db, key, &data2);
+ printf("client:%d fetching the record\n",srvid);
+ h = ctdb_fetch_lock(ctdb_db, ctdb_db, key, &data2);
+ printf("client:%d the record is fetched and locked\n",srvid);
+ if (h == NULL) {
+ printf("client: ctdb_fetch_lock() failed\n");
+ exit(1);
+ }
ctdb_send_message(ctdb, ctdb_get_vnn(ctdb), PARENT_SRVID, data);
-
- while (1) {
+ /* wait until parent tells us to release the lock */
+ while (num_msg==1) {
event_loop_once(ev);
}
+
+ printf("child %d terminating\n",srvid);
+ exit(10);
+
}
/*
@@ -204,29 +248,48 @@ int main(int argc, const char *argv[])
*/
data.dptr=discard_const("dummy message");
data.dsize=strlen((const char *)data.dptr)+1;
- printf("Send message to child 1 to fetch_lock the record\n");
ctdb_send_message(ctdb, ctdb_get_vnn(ctdb), CHILD1_SRVID, data);
/* wait for child 1 to complete fetching and locking the record */
while (num_msg!=3) {
event_loop_once(ev);
}
- printf("Child 1 has fetched and locked the record\n");
/* now tell child 2 to fetch and lock the same record */
- printf("Send message to child 2 to fetch_lock the record\n");
ctdb_send_message(ctdb, ctdb_get_vnn(ctdb), CHILD2_SRVID, data);
- /* wait for child 2 to complete fetching and locking the record */
- while (num_msg!=4) {
+ /* wait a while for child 2 to complete fetching and locking the
+ record, this should fail since the record is already locked
+ by the first child */
+ start_timer();
+ while ( (end_timer() < 1.0) && (num_msg!=4) ) {
event_loop_once(ev);
}
- printf("Child 2 has fetched and locked the record\n");
+ if (num_msg!=4) {
+ printf("Child 2 did not get the lock since it is held by client 1:SUCCESS\n");
+ } else {
+ printf("Child 2 did get the lock:FAILURE\n");
+ exit(10);
+ }
+ /* send message to child 1 to terminate, which should let child 2
+ get the lock.
+ */
+ ctdb_send_message(ctdb, ctdb_get_vnn(ctdb), CHILD1_SRVID, data);
- while (1) {
+
+ /* wait for a final message from child 2 it has received the lock
+ which indicates success */
+ while (num_msg!=4) {
event_loop_once(ev);
}
+ printf("child 2 aquired the lock after child 1 terminated:SUCCESS\n");
+
+ /* send a message to child 2 to tell it to terminate too */
+ ctdb_send_message(ctdb, ctdb_get_vnn(ctdb), CHILD2_SRVID, data);
+
+
+ printf("Test was SUCCESSFUL\n");
/* shut it down */
talloc_free(ctdb);
diff --git a/source4/cluster/ctdb/tests/ctdb_messaging.c b/source4/cluster/ctdb/tests/ctdb_messaging.c
index d02c2116e8..e7057b64fb 100644
--- a/source4/cluster/ctdb/tests/ctdb_messaging.c
+++ b/source4/cluster/ctdb/tests/ctdb_messaging.c
@@ -22,7 +22,7 @@
#include "lib/events/events.h"
#include "system/filesys.h"
#include "popt.h"
-#include "tests/cmdline.h"
+#include "cmdline.h"
static int timelimit = 10;
static int num_records = 10;
@@ -130,7 +130,7 @@ int main(int argc, const char *argv[])
for (j=0;j<num_clients;j++) {
printf("sending message to %d:%d\n", i, j);
sprintf(buf,"Message from %d to vnn:%d srvid:%d",ctdb_get_vnn(ctdb),i,j);
- data.dptr=buf;
+ data.dptr = (unsigned char *)buf;
data.dsize=strlen(buf)+1;
ctdb_send_message(ctdb, i, j, data);
}
@@ -141,6 +141,7 @@ int main(int argc, const char *argv[])
}
/* shut it down */
- talloc_free(ctdb);
+ ctdb_shutdown(ctdb);
+
return 0;
}
diff --git a/source4/cluster/ctdb/tests/ctdb_test.c b/source4/cluster/ctdb/tests/ctdb_test.c
index 8125cc4490..dec1ea5100 100644
--- a/source4/cluster/ctdb/tests/ctdb_test.c
+++ b/source4/cluster/ctdb/tests/ctdb_test.c
@@ -22,7 +22,7 @@
#include "lib/events/events.h"
#include "system/filesys.h"
#include "popt.h"
-#include "tests/cmdline.h"
+#include "cmdline.h"
enum my_functions {FUNC_SORT=1, FUNC_FETCH=2};
@@ -133,6 +133,8 @@ int main(int argc, const char *argv[])
/* start the protocol running */
ret = ctdb_start(ctdb);
+ ctdb_connect_wait(ctdb);
+
ZERO_STRUCT(call);
call.key.dptr = discard_const("test");
call.key.dsize = strlen("test")+1;
@@ -169,14 +171,7 @@ int main(int argc, const char *argv[])
talloc_free(call.reply_data.dptr);
/* go into a wait loop to allow other nodes to complete */
- ctdb_wait_loop(ctdb);
-
- /*talloc_report_full(ctdb, stdout);*/
-
-/* sleep for a while so that our daemon will remaining alive for the other nodes in the cluster */
-sleep(10);
+ ctdb_shutdown(ctdb);
- /* shut it down */
- talloc_free(ctdb);
return 0;
}
diff --git a/source4/cluster/ctdb/tests/fetch.sh b/source4/cluster/ctdb/tests/fetch.sh
index ba043e17c5..73192e70ae 100755
--- a/source4/cluster/ctdb/tests/fetch.sh
+++ b/source4/cluster/ctdb/tests/fetch.sh
@@ -3,7 +3,13 @@
killall -q ctdb_fetch
echo "Trying 2 nodes"
-bin/ctdb_fetch --nlist tests/nodes.txt --listen 127.0.0.2:9001 $* &
-bin/ctdb_fetch --nlist tests/nodes.txt --listen 127.0.0.1:9001 $*
+$VALGRIND bin/ctdb_fetch --nlist tests/nodes.txt --listen 127.0.0.2:9001 $* &
+$VALGRIND bin/ctdb_fetch --nlist tests/nodes.txt --listen 127.0.0.1:9001 $*
+wait
-killall -q ctdb_fetch
+echo "Trying 4 nodes"
+$VALGRIND bin/ctdb_fetch --nlist tests/4nodes.txt --listen 127.0.0.4:9001 $* &
+$VALGRIND bin/ctdb_fetch --nlist tests/4nodes.txt --listen 127.0.0.3:9001 $* &
+$VALGRIND bin/ctdb_fetch --nlist tests/4nodes.txt --listen 127.0.0.2:9001 $* &
+$VALGRIND bin/ctdb_fetch --nlist tests/4nodes.txt --listen 127.0.0.1:9001 $*
+wait
diff --git a/source4/cluster/ctdb/tests/fetch1.sh b/source4/cluster/ctdb/tests/fetch1.sh
index 4331a57d3e..db584ec012 100755
--- a/source4/cluster/ctdb/tests/fetch1.sh
+++ b/source4/cluster/ctdb/tests/fetch1.sh
@@ -3,6 +3,5 @@
killall -q ctdb_fetch1
echo "Trying node"
-bin/ctdb_fetch1 --nlist tests/1node.txt --listen 127.0.0.1:9001 --daemon $*
-
-killall -q ctdb_fetch1
+bin/ctdb_fetch1 --nlist tests/1node.txt --listen 127.0.0.1:9001 $*
+wait
diff --git a/source4/cluster/ctdb/tests/lockwait.c b/source4/cluster/ctdb/tests/lockwait.c
new file mode 100644
index 0000000000..51f88c1168
--- /dev/null
+++ b/source4/cluster/ctdb/tests/lockwait.c
@@ -0,0 +1,245 @@
+/*
+ test a lock wait idea
+
+ Copyright (C) Andrew Tridgell 2006
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2 of the License, or (at your option) any later version.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+*/
+
+#include "includes.h"
+#include "lib/events/events.h"
+#include "system/filesys.h"
+#include "system/wait.h"
+#include "popt.h"
+#include "cmdline.h"
+
+
+struct lockwait_handle {
+ struct fd_event *fde;
+ int fd[2];
+ pid_t child;
+ void *private_data;
+ void (*callback)(void *);
+};
+
+static void lockwait_handler(struct event_context *ev, struct fd_event *fde,
+ uint16_t flags, void *private_data)
+{
+ struct lockwait_handle *h = talloc_get_type(private_data,
+ struct lockwait_handle);
+ void (*callback)(void *) = h->callback;
+ void *p = h->private_data;
+ talloc_set_destructor(h, NULL);
+ close(h->fd[0]);
+ talloc_free(h);
+ callback(p);
+ waitpid(h->child, NULL, 0);
+}
+
+static int lockwait_destructor(struct lockwait_handle *h)
+{
+ close(h->fd[0]);
+ kill(h->child, SIGKILL);
+ waitpid(h->child, NULL, 0);
+ return 0;
+}
+
+
+static struct lockwait_handle *lockwait(struct event_context *ev,
+ TALLOC_CTX *mem_ctx,
+ int fd, off_t ofs, size_t len,
+ void (*callback)(void *), void *private_data)
+{
+ struct lockwait_handle *h;
+ int ret;
+
+ h = talloc_zero(mem_ctx, struct lockwait_handle);
+ if (h == NULL) {
+ return NULL;
+ }
+
+ ret = pipe(h->fd);
+ if (ret != 0) {
+ talloc_free(h);
+ return NULL;
+ }
+
+ h->child = fork();
+ if (h->child == (pid_t)-1) {
+ close(h->fd[0]);
+ close(h->fd[1]);
+ talloc_free(h);
+ return NULL;
+ }
+
+ h->callback = callback;
+ h->private_data = private_data;
+
+ if (h->child == 0) {
+ /* in child */
+ struct flock lock;
+ close(h->fd[0]);
+ lock.l_type = F_WRLCK;
+ lock.l_whence = SEEK_SET;
+ lock.l_start = ofs;
+ lock.l_len = len;
+ lock.l_pid = 0;
+ fcntl(fd,F_SETLKW,&lock);
+ _exit(0);
+ }
+
+ close(h->fd[1]);
+ talloc_set_destructor(h, lockwait_destructor);
+
+ h->fde = event_add_fd(ev, h, h->fd[0], EVENT_FD_READ, lockwait_handler, h);
+ if (h->fde == NULL) {
+ talloc_free(h);
+ return NULL;
+ }
+
+ return h;
+}
+
+
+
+
+static void fcntl_lock_callback(void *p)
+{
+ int *got_lock = (int *)p;
+ *got_lock = 1;
+}
+
+/*
+ get an fcntl lock - waiting if necessary
+ */
+static int fcntl_lock(struct event_context *ev,
+ int fd, int op, off_t offset, off_t count, int type)
+{
+ struct flock lock;
+ int ret;
+ int use_lockwait = (op == F_SETLKW);
+ int got_lock = 0;
+
+ lock.l_type = type;
+ lock.l_whence = SEEK_SET;
+ lock.l_start = offset;
+ lock.l_len = count;
+ lock.l_pid = 0;
+
+ do {
+ ret = fcntl(fd,use_lockwait?F_SETLK:op,&lock);
+ if (ret == 0) {
+ return 0;
+ }
+ if (ret == -1 &&
+ (errno == EACCES || errno == EAGAIN || errno == EDEADLK)) {
+ struct lockwait_handle *h;
+ h = lockwait(ev, ev, fd, offset, count,
+ fcntl_lock_callback, &got_lock);
+ if (h == NULL) {
+ errno = ENOLCK;
+ return -1;
+ }
+ /* in real code we would return to the event loop */
+ while (!got_lock) {
+ event_loop_once(ev);
+ }
+ got_lock = 0;
+ }
+ } while (!got_lock);
+
+ return ret;
+}
+
+static void child(struct event_context *ev, int n)
+{
+ int fd;
+ int count=0;
+ struct timeval tv;
+ fd = open("test.dat", O_CREAT|O_RDWR, 0666);
+ if (fd == -1) {
+ perror("test.dat");
+ exit(1);
+ }
+
+ tv = timeval_current();
+
+ while (timeval_elapsed(&tv) < 10) {
+ int ret;
+ ret = fcntl_lock(ev, fd, F_SETLKW, 0, 1, F_WRLCK);
+ if (ret != 0) {
+ printf("Failed to get lock in child %d!\n", n);
+ break;
+ }
+ fcntl_lock(ev, fd, F_SETLK, 0, 1, F_UNLCK);
+ count++;
+ }
+
+ printf("child %2d %.0f ops/sec\n", n, count/timeval_elapsed(&tv));
+ _exit(0);
+}
+
+static int timelimit = 10;
+
+/*
+ main program
+*/
+int main(int argc, const char *argv[])
+{
+ pid_t *pids;
+ int nprogs = 2;
+ int i;
+ struct event_context *ev;
+ struct poptOption popt_options[] = {
+ POPT_AUTOHELP
+ { "timelimit", 't', POPT_ARG_INT, &timelimit, 0, "timelimit", "integer" },
+ { "num-progs", 'n', POPT_ARG_INT, &nprogs, 0, "num_progs", "integer" },
+ POPT_TABLEEND
+ };
+ poptContext pc;
+ int opt;
+
+ pc = poptGetContext(argv[0], argc, argv, popt_options, POPT_CONTEXT_KEEP_FIRST);
+
+ while ((opt = poptGetNextOpt(pc)) != -1) {
+ switch (opt) {
+ default:
+ fprintf(stderr, "Invalid option %s: %s\n",
+ poptBadOption(pc, 0), poptStrerror(opt));
+ exit(1);
+ }
+ }
+
+ ev = event_context_init(NULL);
+
+ pids = talloc_array(ev, pid_t, nprogs);
+
+ /* create N processes fighting over the same lock */
+ for (i=0;i<nprogs;i++) {
+ pids[i] = fork();
+ if (pids[i] == 0) {
+ child(ev, i);
+ }
+ }
+
+ printf("Waiting for %d children ...\n", nprogs);
+
+ /* wait for our kids to finish playing */
+ for (i=0;i<nprogs;i++) {
+ waitpid(pids[i], NULL, 0);
+ }
+
+ return 0;
+}
diff --git a/source4/cluster/ctdb/tests/messaging.sh b/source4/cluster/ctdb/tests/messaging.sh
index 179a2bef88..46f3e4dc77 100755
--- a/source4/cluster/ctdb/tests/messaging.sh
+++ b/source4/cluster/ctdb/tests/messaging.sh
@@ -5,5 +5,4 @@ killall -q ctdb_messaging
echo "Trying 2 nodes"
bin/ctdb_messaging --nlist tests/nodes.txt --listen 127.0.0.2:9001 $* &
bin/ctdb_messaging --nlist tests/nodes.txt --listen 127.0.0.1:9001 $*
-
-killall -q ctdb_messaging
+wait
diff --git a/source4/cluster/ctdb/tests/test.sh b/source4/cluster/ctdb/tests/test.sh
index 6197ce9616..23fdb8d6ce 100755
--- a/source4/cluster/ctdb/tests/test.sh
+++ b/source4/cluster/ctdb/tests/test.sh
@@ -3,33 +3,15 @@
killall -q ctdb_test
-echo "Trying 2 nodes"
-bin/ctdb_test --nlist tests/nodes.txt --listen 127.0.0.1:9001 &
-bin/ctdb_test --nlist tests/nodes.txt --listen 127.0.0.2:9001 &
+echo "Trying 2 nodes ..."
+$VALGRIND bin/ctdb_test --nlist tests/nodes.txt --listen 127.0.0.1:9001 &
+$VALGRIND bin/ctdb_test --nlist tests/nodes.txt --listen 127.0.0.2:9001
+wait
+
+echo "Trying 4 nodes ..."
+$VALGRIND bin/ctdb_test --nlist tests/4nodes.txt --listen 127.0.0.1:9001 &
+$VALGRIND bin/ctdb_test --nlist tests/4nodes.txt --listen 127.0.0.2:9001 &
+$VALGRIND bin/ctdb_test --nlist tests/4nodes.txt --listen 127.0.0.3:9001 &
+$VALGRIND bin/ctdb_test --nlist tests/4nodes.txt --listen 127.0.0.4:9001
+wait
-sleep 3
-killall ctdb_test
-
-echo "Trying 4 nodes"
-bin/ctdb_test --nlist tests/4nodes.txt --listen 127.0.0.1:9001 &
-bin/ctdb_test --nlist tests/4nodes.txt --listen 127.0.0.2:9001 &
-bin/ctdb_test --nlist tests/4nodes.txt --listen 127.0.0.3:9001 &
-bin/ctdb_test --nlist tests/4nodes.txt --listen 127.0.0.4:9001 &
-sleep 3
-
-killall ctdb_test
-
-echo "Trying 2 nodes in daemon mode"
-bin/ctdb_test --nlist tests/nodes.txt --listen 127.0.0.1:9001 --daemon &
-bin/ctdb_test --nlist tests/nodes.txt --listen 127.0.0.2:9001 --daemon &
-
-sleep 3
-killall ctdb_test
-
-echo "Trying 4 nodes in daemon mode"
-bin/ctdb_test --nlist tests/4nodes.txt --listen 127.0.0.1:9001 --daemon &
-bin/ctdb_test --nlist tests/4nodes.txt --listen 127.0.0.2:9001 --daemon &
-bin/ctdb_test --nlist tests/4nodes.txt --listen 127.0.0.3:9001 --daemon &
-bin/ctdb_test --nlist tests/4nodes.txt --listen 127.0.0.4:9001 --daemon &
-sleep 3
-killall ctdb_test
diff --git a/source4/cluster/ctdb/tests/test1.sh b/source4/cluster/ctdb/tests/test1.sh
index 64d5c9fc87..42256f22f9 100755
--- a/source4/cluster/ctdb/tests/test1.sh
+++ b/source4/cluster/ctdb/tests/test1.sh
@@ -1,8 +1,9 @@
#!/bin/sh
-echo "Testing local send"
-bin/ctdb_test --nlist tests/1node.txt --listen 127.0.0.1:9001
echo "Testing daemon mode"
-bin/ctdb_test --nlist tests/1node.txt --listen 127.0.0.1:9001 --daemon
+bin/ctdb_test --nlist tests/1node.txt --listen 127.0.0.1:9001
+wait
+
echo "Testing self connect"
bin/ctdb_test --nlist tests/1node.txt --listen 127.0.0.1:9001 --self-connect
+wait
diff --git a/source4/cluster/ctdb/tools/ctdb_status.c b/source4/cluster/ctdb/tools/ctdb_status.c
new file mode 100644
index 0000000000..af4c62488d
--- /dev/null
+++ b/source4/cluster/ctdb/tools/ctdb_status.c
@@ -0,0 +1,133 @@
+/*
+ ctdb status tool
+
+ Copyright (C) Andrew Tridgell 2007
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2 of the License, or (at your option) any later version.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+*/
+
+#include "includes.h"
+#include "lib/events/events.h"
+#include "system/filesys.h"
+#include "popt.h"
+#include "cmdline.h"
+#include "../include/ctdb_private.h"
+
+
+/*
+ display status structure
+ */
+static void show_status(struct ctdb_status *s)
+{
+ printf(" client_packets_sent %u\n", s->client_packets_sent);
+ printf(" client_packets_recv %u\n", s->client_packets_recv);
+ printf(" req_call %u\n", s->client.req_call);
+ printf(" req_message %u\n", s->client.req_message);
+ printf(" req_finished %u\n", s->client.req_finished);
+ printf(" req_register %u\n", s->client.req_register);
+ printf(" req_connect_wait %u\n", s->client.req_connect_wait);
+ printf(" req_shutdown %u\n", s->client.req_shutdown);
+ printf(" req_status %u\n", s->client.req_status);
+ printf(" node_packets_sent %u\n", s->node_packets_sent);
+ printf(" node_packets_recv %u\n", s->node_packets_recv);
+ printf(" req_call %u\n", s->client.req_call);
+ printf(" reply_call %u\n", s->count.reply_call);
+ printf(" reply_redirect %u\n", s->count.reply_redirect);
+ printf(" req_dmaster %u\n", s->count.req_dmaster);
+ printf(" reply_dmaster %u\n", s->count.reply_dmaster);
+ printf(" reply_error %u\n", s->count.reply_error);
+ printf(" reply_redirect %u\n", s->count.reply_redirect);
+ printf(" req_message %u\n", s->count.req_message);
+ printf(" req_finished %u\n", s->count.req_finished);
+ printf(" total_calls %u\n", s->total_calls);
+ printf(" pending_calls %u\n", s->pending_calls);
+ printf(" lockwait_calls %u\n", s->lockwait_calls);
+ printf(" pending_lockwait_calls %u\n", s->pending_lockwait_calls);
+ printf(" max_call_latency %.6f seconds\n", s->max_call_latency);
+ printf(" max_lockwait_latency %.6f seconds\n", s->max_lockwait_latency);
+}
+
+/*
+ show usage message
+ */
+static void usage(void)
+{
+ printf("Usage: ctdb_status <socketpath>\n");
+ exit(1);
+}
+
+/*
+ main program
+*/
+int main(int argc, const char *argv[])
+{
+ struct ctdb_context *ctdb;
+ struct poptOption popt_options[] = {
+ POPT_AUTOHELP
+ POPT_CTDB_CMDLINE
+ POPT_TABLEEND
+ };
+ int opt;
+ const char **extra_argv;
+ int extra_argc = 0;
+ int ret;
+ poptContext pc;
+ struct event_context *ev;
+ const char *ctdb_socket;
+ struct ctdb_status status;
+
+ pc = poptGetContext(argv[0], argc, argv, popt_options, POPT_CONTEXT_KEEP_FIRST);
+
+ while ((opt = poptGetNextOpt(pc)) != -1) {
+ switch (opt) {
+ default:
+ fprintf(stderr, "Invalid option %s: %s\n",
+ poptBadOption(pc, 0), poptStrerror(opt));
+ exit(1);
+ }
+ }
+
+ /* setup the remaining options for the main program to use */
+ extra_argv = poptGetArgs(pc);
+ if (extra_argv) {
+ extra_argv++;
+ while (extra_argv[extra_argc]) extra_argc++;
+ }
+
+ if (extra_argc < 1) {
+ usage();
+ }
+
+ ctdb_socket = extra_argv[0];
+
+ ev = event_context_init(NULL);
+
+ /* initialise ctdb */
+ ctdb = ctdb_cmdline_client(ev, ctdb_socket);
+ if (ctdb == NULL) {
+ printf("Failed to init ctdb\n");
+ exit(1);
+ }
+
+ ret = ctdb_status(ctdb, &status);
+ if (ret != 0) {
+ printf("Failed to get ctdb status\n");
+ exit(1);
+ }
+
+ show_status(&status);
+
+ return 0;
+}