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Guenther
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more usefull
metze
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Autobuild-User: Volker Lendecke <vlendec@samba.org>
Autobuild-Date: Tue Feb 1 15:59:17 CET 2011 on sn-devel-104
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wbinfo --dc-info prints the current DC name and IP address. This helps
diagnosing problems that might happen when a later wbinfo --ping-dc fails.
This patch started out by using the SAF and NBT cache entires, but those are
relatively short-lived. So I decided to invent a new gencache entry with a very
long timeout. We need to go via the gencache because when for some reason a
winbind child process is stuck, we can't query it for the current DC it's
connected to. This must eventually go away again when we have a fully async
winbind.
Autobuild-User: Volker Lendecke <vlendec@samba.org>
Autobuild-Date: Wed Jan 19 08:40:28 CET 2011 on sn-devel-104
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the daemons themselves. Allows client utilities to silently
fail to create a messaging context due to access denied on the
messaging tdb (which I need for the following patch).
Jeremy.
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This change improves the setup_logging() API so that callers which
wish to set up logging to stderr can simply ask for it, rather than
directly modify the dbf global variable.
Andrew Bartlett
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We need the system server info in the rpc services.
Autobuild-User: Andreas Schneider <asn@samba.org>
Autobuild-Date: Mon Oct 18 12:43:16 UTC 2010 on sn-devel-104
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This is supposed to improve the winbind reconnect time after an ip address
has been moved away from a box. Any kind of HA scenario will benefit from
this, because winbindd does not have to wait for the TCP timeout to kick in
when a local IP address has been dropped and DC replies are not received
anymore.
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through an smb.conf option.
Signed-off-by: Jeremy Allison <jra@samba.org>
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Hello list,
Considered relevant by a customer.
As I suppose one doesn't send SIGUSR2 very often, I didn't bother adding another DEBUGLEVEL.
--
Pierre
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Hello list,
Seems simple enough for my first patch :)
--
Pierre
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Guenther
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Guenther
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Michael
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Michael
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Guenther
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This adds two callback function for each rpc service. One is for
initialisation and the other for shutdown. rpc_<service>_unregister()
needs to be called to execute the shutdown function.
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Otherwise a lot of information that is usually generated in the ndr_push remains
in an uninitialized state.
Guenther
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This removes some deep references to procid_self()
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This particular init function needs to be done in a native Samba3
build, but it turns out to be difficult for s3compat, which has other
code listening on the sockets.
Andrew Bartlett
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This way everything is destoryed at the conclusion of
the connection correctly.
Andrew Bartlett
Signed-off-by: Stefan Metzmacher <metze@samba.org>
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By putting this code inline in winbindd_setup_listeners() we remove 2
static variables and simplify the code.
By putting the get_winbind_priv_pipe_dir() in the same file, we allow
it to be reimplemented in s3compat.
Andrew Bartlett
Signed-off-by: Stefan Metzmacher <metze@samba.org>
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I'm experimenting with a different entry point
This reverts commit f5c0f90da5f5372ca6b7a72daa8d073a2444a068.
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This function provides a useful entry point for s3compat to set things
up in winbindd.
Andrew Bartlett
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This provides a more useful entry point for s3compat.
Andrew Bartlett
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This allows this function to be easily replaced in s3compat
Andrew Bartlett
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This call only prints a DEBUG()
Andrew Bartlett
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This shrinks include/includes.h.gch by the size of 7 MB and reduces build time
as follows:
ccache build w/o patch
real 4m21.529s
ccache build with patch
real 3m6.402s
pch build w/o patch
real 4m26.318s
pch build with patch
real 3m6.932s
Guenther
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commit 73577205cf81644e7fe853eaf3e6459f7f443096
(s3:winbindd: fix problems with SIGCHLD handling (bug #7317))
broke this.
metze
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metze
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The main problem is that we call CatchChild() within the
parent winbindd, which overwrites the signal handler
that was registered by winbindd_setup_sig_chld_handler().
That means winbindd_sig_chld_handler() and winbind_child_died()
are never triggered when a winbindd domain child dies.
As a result will get "broken pipe" for all requests to that domain.
To reduce the risk of similar bugs in future we call
CatchChild() in winbindd_reinit_after_fork() now.
We also use a full winbindd_reinit_after_fork() in the
cache validation child now instead instead of just resetting
the SIGCHLD handler by hand. This will also fix possible
tdb problems on systems without pread/pwrite and disabled mmap
as we now correctly reopen the tdb handle for the child.
metze
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When a samba server process dies hard, it has no chance to clean up its entries
in locking.tdb, brlock.tdb, connections.tdb and sessionid.tdb.
For locking.tdb and brlock.tdb Samba is robust by checking every time we read
an entry from the database if the corresponding process still exists. If it
does not exist anymore, the entry is deleted. This is not 100% failsafe though:
On systems with a limited PID space there is a non-zero chance that between the
smbd's death and the fresh access, the PID is recycled by another long-running
process. This renders all files that had been locked by the killed smbd
potentially unusable until the new process also dies.
This patch is supposed to fix the problem the following way: Every process ID
in every database is augmented by a random 64-bit number that is stored in a
serverid.tdb. Whenever we need to check if a process still exists we know its
PID and the 64-bit number. We look up the PID in serverid.tdb and compare the
64-bit number. If it's the same, the process still is a valid smbd holding the
lock. If it is different, a new smbd has taken over.
I believe this is safe against an smbd that has died hard and the PID has been
taken over by a non-samba process. This process would not have registered
itself with a fresh 64-bit number in serverid.tdb, so the old one still exists
in serverid.tdb. We protect against this case by the parent smbd taking care of
deregistering PIDs from serverid.tdb and the fact that serverid.tdb is
CLEAR_IF_FIRST.
CLEAR_IF_FIRST does not work in a cluster, so the automatic cleanup does not
work when all smbds are restarted. For this, "net serverid wipe" has to be run
before smbd starts up. As a convenience, "net serverid wipedbs" also cleans up
sessionid.tdb and connections.tdb.
While there, this also cleans up overloading connections.tdb with all the
process entries just for messaging_send_all().
Volker
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That will hopefully make debugging a bit easier (at least for me).
metze
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