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This is the only place it is used.
After migrating to Samba's lib/util, the lock helper can be changed to
use strhex_to_data_blob().
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
No need for "..", since the correct thing is generated. Add "include"
and "include/internal" where missing.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Just install into lib/ and let packagers decide on this policy, since
it can vary between distributions. Update our packaging files
accordingly.
A secondary matter is that things are incorrectly installed into
lib64/ when building with 32-bit userspace on a 64-bit kernel. If
this is done then it should depend on the architecture of the
compiler.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
The client code uses both of these, so might as well depend on it.
That way code that depends on ctdb-client transitively get the
dependencies.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
To avoid warnings when using --enable-developer, which uses
-Wmissing-prototypes.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
To avoid warnings when using --enable-developer, which uses
-Wmissing-prototypes.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Some declarations get lost because they basically get #define-d away,
so they need to be repeated after the #undef-s. Also, some functions
are introduced due the #define-s.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
To avoid warnings when using --enable-developer, which uses
-Wmissing-prototypes.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Deferring packets has a nasty interaction with recovery. All deferred
packets must be dropped when recovery happens, since those packets are
tracked as pending requests and will be re-sent with new generation.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
Autobuild-User(master): Martin Schwenke <martins@samba.org>
Autobuild-Date(master): Fri Sep 5 09:30:50 CEST 2014 on sn-devel-104
When using TDB robust mutexes, the kernel wakes waiting processes one
by one, in the priority list order. To ensure that ctdb lock helper
processes do not starve, lock helper processes need to run at a higher
priority than smbd.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
When CTDB receives DMASTER_REQUEST or DMASTER_REPLY packet, the specified
record needs to be updated as soon as possible to avoid inconsistent
dmaster information between nodes. During this time, queue up all calls
for that record and process them only after dmaster request/reply has
been processed.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
There is no need for a special function to free lock request and
corresponding lock context. Freeing lock request will free lock
context also.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
This makes sure that when the client context is destroyed, the lock
request goes away. If the lock requests is already scheduled, then the
lock child process will be terminated.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
default/ctdb/utils/smnotify/gen_xdr.c: In function ‘xdr_status’:
default/ctdb/utils/smnotify/gen_xdr.c:11:20: warning: unused variable ‘buf’ [-Wunused-variable]
register int32_t *buf;
^
When generating the code, change it to assign the variable to itself.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Autobuild-User(master): Amitay Isaacs <amitay@samba.org>
Autobuild-Date(master): Thu Aug 21 07:11:02 CEST 2014 on sn-devel-104
Seeing these with -Wall:
../server/ctdb_call.c:1117:3: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
record_flags = *(uint32_t *)&c->data[c->keylen + c->datalen];
^
memcpy() seems to be the easiest way to get fix these. The
alternative would be to use unmarshalling functions.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
We really should extricate these from source3 and into some common
code. However, just copy them for now to help get rid of a lot of
warnings.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Revoking readonly record involves first marking the record on dmaster as
RO_REVOKING_READONLY. Then all the other nodes are sent update_record
control to get rid of RO_DELEGATION. Once that succeeds, the record
is marked RO_REVOKING_COMPLETE.
Currently, revoking of readonly delegations on the nodes is tried only
once. If a node goes in recovery, it can fail update_record control and
revoke code will abort ctdb. Since database recovery would revoke all
readonly delegations anyway, there is no reason to abort. Simply undo
the start of revoke process by resetting RO_REVOKING_READONLY flag.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
Autobuild-User(master): Martin Schwenke <martins@samba.org>
Autobuild-Date(master): Wed Aug 13 11:24:09 CEST 2014 on sn-devel-104
This patch makes the subsequent logic change small and easier to
understand.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
Autobuild-User(master): Martin Schwenke <martins@samba.org>
Autobuild-Date(master): Mon Aug 11 10:58:43 CEST 2014 on sn-devel-104
I like early returns that avoid else branches :-)
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Autobuild-User(master): Amitay Isaacs <amitay@samba.org>
Autobuild-Date(master): Wed Aug 6 14:44:31 CEST 2014 on sn-devel-104
This avoids traversing a single pending queue which is quite expensive
when there are lots of pending lock requests. This seems to happen
quite a lot on a loaded cluster for notify_index.tdb.
Adding per database queues avoids the need to traverse pending queue
for that database if there are already the maximum number of active
lock requests.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Volker Lendecke <vl@samba.org>
Autobuild-User(master): Volker Lendecke <vl@samba.org>
Autobuild-Date(master): Mon Aug 4 20:23:45 CEST 2014 on sn-devel-104
This allows to schedule DB locks quickly without having to scan through
the pending lock requests.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Volker Lendecke <vl@samba.org>
The number of pending locks displayed in ctdb statistics are stored in
ctdb_statistics structure and not ctdb_context.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Volker Lendecke <vl@samba.org>
This allows to change the maximum number of lock processes that can
be active.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Volker Lendecke <vl@samba.org>
