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path: root/source3/lib/dbwrap/dbwrap_ctdb.c
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2012-04-17s3: Add dbwrap_try_fetch_lockedVolker Lendecke1-3/+33
This is designed to spread the load on individual ctdb records to allow upper layers to do backoff mechanisms. In the ctdb case, do not get the record if a local lock is already taken. If we are not dmaster, do at most one migrate attempt. For the tdb case, this is a nonblocking fetch_locked. If someone else has the lock, give up.
2012-04-03s3: Enhance the dbwrap needed x attempts msgVolker Lendecke1-1/+5
Autobuild-User: Volker Lendecke <vl@samba.org> Autobuild-Date: Tue Apr 3 15:17:11 CEST 2012 on sn-devel-104
2012-03-30s3: Avoid a crash with debug level 10Volker Lendecke1-1/+2
Autobuild-User: Volker Lendecke <vl@samba.org> Autobuild-Date: Fri Mar 30 16:52:16 CEST 2012 on sn-devel-104
2012-03-16s3-dbwrap: Move "lock_order" initialization to db_open_xxVolker Lendecke1-0/+1
2012-03-10tdb_wrap: Move to specific directory.Jelmer Vernooij1-1/+1
It's a bit confusing to mix low-level and high-level libraries. We had multiple libraries in one directory, and there were have circular dependencies with other libraries outside that directory (in this case, samba-hostconfig). Autobuild-User: Jelmer Vernooij <jelmer@samba.org> Autobuild-Date: Sat Mar 10 23:13:01 CET 2012 on sn-devel-104
2012-03-05s3-ctdb: Enable CTDB readonly support only if CTDB supports itAmitay Isaacs1-0/+4
Autobuild-User: Amitay Isaacs <amitay@samba.org> Autobuild-Date: Mon Mar 5 02:47:36 CET 2012 on sn-devel-104
2012-03-05dbwrap_ctdb: only fetch a read-only copy if we had a record already.Rusty Russell1-2/+7
Because revoking read-only copies of records is expensive, we only want ctdbd to do it for high-turnover records. A basic heuristic is that if we don't find a local copy of the record, don't ask for a read-only copy. The fetch itself will cause ctdbd to migrate the record, so eventually we will have a local copy. Next time it gets migrated away, we'll call ctdbd_fetch() with local_copy = true. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2012-03-05dbwrap_ctdb: handle read-only records.Rusty Russell1-9/+26
The new read-only record flags make determining if we can use a record a bit more complex, so extract it into its own function. The OLD logic was: 1) If the record doesn't exist, we can't use it. 2) If we are the dmaster for the record, we can use it. The new logic is: 1) If the record doesn't exist, we can't use it. 2) If we are the dmaster for the record, we can use it IF we only want read-only access, OR there are no read-only delegations. 3) If we are not dmaster, we can only use it if we want read-only access and it is marked as a read-only copy. This logic is unused until the next patches which begin to ask for read-only copies of records. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2012-01-18s3: Use lock_order for setting the db priorityVolker Lendecke1-0/+18
Autobuild-User: Volker Lendecke <vlendec@samba.org> Autobuild-Date: Wed Jan 18 16:21:52 CET 2012 on sn-devel-104
2012-01-18s3: Pass down lock_order to db_open_ctdbVolker Lendecke1-2/+4
2011-12-15s3-dbwrap: Remove the "fetch" db_context callbackVolker Lendecke1-1/+0
Signed-off-by: Michael Adam <obnox@samba.org>
2011-12-15s3-dbwrap: Implement db_ctdb_parse_record in terms of db_ctdb_fetchVolker Lendecke1-0/+19
Signed-off-by: Michael Adam <obnox@samba.org>
2011-11-29s3:dbwrap: turn the fetch dbwrap method to NTSTATUS return code.Michael Adam1-24/+14
This implement more correct NTSTATUS handling inside the backends. This ensures that data.dptr != NULL if return code is NT_STATUS_OK.
2011-11-29s3:dbwrap_ctdb: re-use map_nt_error_from_tdb() in local tdb_error_to_ntstatus()Michael Adam1-14/+1
2011-11-25s3:dbwrap: do not burden the user of db_open_ctdb with ifdef voodooGregor Beck1-0/+13
Signed-off-by: Michael Adam <obnox@samba.org>
2011-10-14s3:dbwrap_ctdb: return the number of records in db_ctdb_traverse() for ↵Stefan Metzmacher1-3/+15
persistent dbs metze Autobuild-User: Stefan Metzmacher <metze@samba.org> Autobuild-Date: Fri Oct 14 20:59:37 CEST 2011 on sn-devel-104
2011-10-13s3:dbwrap_ctdb: fix the build after changing signature of tdb_wrap_open()Michael Adam1-1/+7
Autobuild-User: Michael Adam <obnox@samba.org> Autobuild-Date: Thu Oct 13 18:50:47 CEST 2011 on sn-devel-104
2011-10-12s3:dbwrap_ctdb: improve the check for skipping the __db_sequence_number__ ↵Michael Adam1-2/+1
record in traverse It did not compare the last charcter (usually '\0')
2011-10-12s3:dbwrap_ctdb: fix check for skipping the __db_sequence_number__ in traverseMichael Adam1-1/+1
Brown paperbag. This omitted the "== 0" hand hence skipped all keys of the same length as __db_sequence_number__ but different from it...
2011-10-12s3-dbwrap_ctdb: fix the build.Günther Deschner1-1/+4
Michael, please check. Guenther Autobuild-User: Günther Deschner <gd@samba.org> Autobuild-Date: Wed Oct 12 15:25:56 CEST 2011 on sn-devel-104
2011-10-12s3:dbwrap: remove m_all marshall buffer from ctdb transaction.Gregor Beck1-23/+1
it was only used by ctdb_replay_transaction and was a actually write only Signed-off-by: Michael Adam <obnox@samba.org> Autobuild-User: Michael Adam <obnox@samba.org> Autobuild-Date: Wed Oct 12 05:20:36 CEST 2011 on sn-devel-104
2011-10-12s3:dbwrap: traverse records created within this transaction.Gregor Beck1-1/+39
Signed-off-by: Michael Adam <obnox@samba.org>
2011-10-11s3:dbwrap: move definitions of db_record and db_contect structs to ↵Michael Adam1-0/+1
dbwrap_private.h The API and callers now only need the forward declarations.
2011-10-11s3:dbwrap: move the db_open_ctdb() prototype to a new header dbwrap_ctdb.hMichael Adam1-0/+1
2011-09-28s3:dbwrap_ctdb: improve the check for skipping the __db_sequence_number__ ↵Michael Adam1-2/+1
record in traverse It did not compare the last charcter (usually '\0') Autobuild-User: Michael Adam <obnox@samba.org> Autobuild-Date: Wed Sep 28 16:54:59 CEST 2011 on sn-devel-104
2011-09-20s3:dbwrap_ctdb: skip the internal __db_sequence_number__ key from ↵Michael Adam1-0/+26
(persistent) traverse and traverse_read This is is used internally in the persistent transactions and should not surface. Autobuild-User: Michael Adam <obnox@samba.org> Autobuild-Date: Tue Sep 20 07:59:20 CEST 2011 on sn-devel-104
2011-09-07s3:dbwrap_ctdb: improve error message in transaction destructorGregor Beck1-1/+2
Signed-off-by: Michael Adam <obnox@samba.org>
2011-08-30s3: Silence some warningsVolker Lendecke1-0/+19
Rusty, please suggest a proper fix for this. Thanks, Volker Lendecke Autobuild-User: Volker Lendecke <vlendec@samba.org> Autobuild-Date: Tue Aug 30 19:16:14 CEST 2011 on sn-devel-104
2011-08-15s3:dbwrap_ctdb: improve transaction start/commit/cancel debuggingMichael Adam1-2/+8
* also log nesting transaction start/commit/cancel * unify transaction log messages slightly
2011-07-29s3:dbwrap: move all .c and .h files of dbwrap to lib/dbwrap/Michael Adam1-0/+1440
Autobuild-User: Michael Adam <obnox@samba.org> Autobuild-Date: Fri Jul 29 13:34:22 CEST 2011 on sn-devel-104
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