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The flags returned were TDB-specific: this was only used for detecting
the endianness of obsolete databases (the conversion code was put in in
2003, with reference to Samba 2.3).
It's easier to remove it than to translate the NTDB flags to TDB flags,
and it's a really weird thing to ask for anyway.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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This is needed in all of the library, not only in the dbwrap_open part.
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This is a per-db function that is called whenever some record is modified
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This returns a blob uniquely identifying the database
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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.
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Autobuild-User: Volker Lendecke <vl@samba.org>
Autobuild-Date: Tue Apr 3 15:17:11 CEST 2012 on sn-devel-104
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Autobuild-User: Volker Lendecke <vl@samba.org>
Autobuild-Date: Fri Mar 30 16:52:16 CEST 2012 on sn-devel-104
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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
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Autobuild-User: Amitay Isaacs <amitay@samba.org>
Autobuild-Date: Mon Mar 5 02:47:36 CET 2012 on sn-devel-104
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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>
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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>
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Autobuild-User: Volker Lendecke <vlendec@samba.org>
Autobuild-Date: Wed Jan 18 16:21:52 CET 2012 on sn-devel-104
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Signed-off-by: Michael Adam <obnox@samba.org>
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Signed-off-by: Michael Adam <obnox@samba.org>
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This implement more correct NTSTATUS handling inside the backends.
This ensures that data.dptr != NULL if return code is NT_STATUS_OK.
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Signed-off-by: Michael Adam <obnox@samba.org>
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persistent dbs
metze
Autobuild-User: Stefan Metzmacher <metze@samba.org>
Autobuild-Date: Fri Oct 14 20:59:37 CEST 2011 on sn-devel-104
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Autobuild-User: Michael Adam <obnox@samba.org>
Autobuild-Date: Thu Oct 13 18:50:47 CEST 2011 on sn-devel-104
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record in traverse
It did not compare the last charcter (usually '\0')
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Brown paperbag. This omitted the "== 0" hand hence skipped all keys of the
same length as __db_sequence_number__ but different from it...
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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
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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
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Signed-off-by: Michael Adam <obnox@samba.org>
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dbwrap_private.h
The API and callers now only need the forward declarations.
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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
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(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
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Signed-off-by: Michael Adam <obnox@samba.org>
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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
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* also log nesting transaction start/commit/cancel
* unify transaction log messages slightly
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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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