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This code is difficult to read and there really is no common code
between the 2 cases. For example, there is no need to split a
filename into words. Separating each of the 2 cases into its own
function makes the logic much easier to understand.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13800
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): Mon Feb 25 03:40:16 CET 2019 on sn-devel-144
Under the covers, a command is always used. However, there is no way
of testing of the code path where a command is explicitly configured.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13800
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Currently this will wait forever. It really needs a timeout in case
the cluster filesystem (or other lock mechanism) is completely wedged.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13800
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
We really shouldn't see unknown errors. They probably represent a
misconfigured recovery lock or similar.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13800
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Add an explicit case for a timeout and clean up the other messages.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13800
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
If nested events occur while the file descriptor handler is still
active then chaos can ensue. For example, if a node is banned and the
lock is explicitly cancelled (e.g. due to election loss) then
double-talloc-free()s abound.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13800
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
ctdbd will start without a recovery lock configured. It will log a
message saying that this is not optimal. However, a careless user may
overlook both this message and the importance of setting a recovery
lock. If the existing example configuration is uncommented then the
directory containing it will be created (by 01.reclock.script) and the
failure (i.e. multiple nodes able to take the lock) will be confusing.
Instead, change the example setting to one that will result in banned
nodes, encouraging users to consciously configure (or deconfigure) the
recovery lock. Tweak the corresponding comment.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13790
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13791
Signed-off-by: Christof Schmitt <cs@samba.org>
Reviewed-by: Martin Schwenke <martin@meltin.net>
Autobuild-User(master): Martin Schwenke <martins@samba.org>
Autobuild-Date(master): Fri Feb 22 03:51:37 CET 2019 on sn-devel-144
In order to calculate the number of bytes correctly which
are to be read into the buffer, the buffer.offset must be taken
into account.
This patch fixes a regression introduced by 382705f495dd.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13791
Signed-off-by: Swen Schillig <swen@linux.ibm.com>
Reviewed-by: Christof Schmitt <cs@samba.org>
Reviewed-by: Martin Schwenke <martin@meltin.net>
It isn't currently possible to distinguish these 2 cases.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Checking that the database contains 0 records cause a traverse. This
may take a lock and cause vacuuming to fail (or be deferred for a
particular record/chain). Minimise the chance of this happening by
only checking for 0 records every 10 seconds.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
When the number of fast path vacuuming runs is 0 then a full vacuuming
run is done. This means the first one is a full run, which is almost
certainly not what is intended.
Combine the 2 conditionals to only flag a full vacuuming run when the
count exceeds the configured limit. This means that the
full_vacuum_run flag is set in both parent and child, but this is
harmless... and is better than getting it wrong.
Also tweak the comparison to be less-than-or-equal, since the zeroth
run needs to be counted.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
This allows to build packages even when python3 is not available by
setting PYTHON variable.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
../../tools/ctdb.c: In function 'str_to_data':
../../tools/ctdb.c:624: warning: 'data.dsize' may be used uninitialized in this function
../../tools/ctdb.c:624: warning: 'data.dptr' may be used uninitialized in this function
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
This can result in Unix domain socket names that are too long.
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): Tue Dec 18 05:31:00 CET 2018 on sn-devel-144
If CTDB_BASE is relative then symbolic link targets will be incorrect.
Don't force CTDB_BASE to be absolute because this can result in Unix
domain socket names that are too long.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
If CTDB_BASE is relative then the symbolic link target will be
incorrect.
Don't force CTDB_BASE to be absolute because this can result in Unix
domain socket names that are too long.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Event scripts (well, statd_callout) can change directory, causing
stubs to be unable to locate EVENTSCRIPTS_TESTS_VAR_DIR if it is
relative.
Don't force TEST_VAR_DIR to be absolute because this can result in
Unix domain socket names that are too long.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
If TEST_VAR_DIR is relative then symbolic link targets will be
incorrect.
Don't force TEST_VAR_DIR to be absolute because this can result in
Unix domain socket names that are too long.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
The lock may have been lost due to a failure in the underlying locking
mechanism. This could be due to quorum loss or similar. It is best
to call an election to confirm that this node should still be master.
At worst, the node will reelect itself, fail to take the lock and then
ban itself. This is a suitable outcome for a node that has been
partitioned from others in the cluster.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
This provides finer resolution while still maintaining a reasonable
maximum. In this case the top bucket contains any hop counts
>= 16384, compared to the current situation where the top bucket contains
hop counts >= 268435456.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
This avoids creating a mini-configure in the configure script.
Users wishing to use python2 to build need to specify PYTHON=
to both ./configure and make
After we merged the python3 change, it became clear that relying on systems prefixing
the correct python just causes trouble and make debugging harder, so only use $PYTHON
for the override, not the default case
This essentially reverts a660b7fb8e519bd3be558fd0425bff8f287fca1f but
leaves the files more consistent.
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Noel Power <npower@samba.org>
Make sure default make and configure for all now defaults
to building with python3.
To build a samba (or sub component e.g. talloc etc.) with python3
./configure && make
To build a samba (or sub component e.g. talloc etc.) with python2
PYTHON=python ./configure && PYTHON=python make
Signed-off-by: Noel Power <noel.power@suse.com>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
The code does not implement saving the record data to a file, so update
the usage info accordingly.
Signed-off-by: Christof Schmitt <cs@samba.org>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Autobuild-User(master): Amitay Isaacs <amitay@samba.org>
Autobuild-Date(master): Mon Dec 10 05:02:13 CET 2018 on sn-devel-144
The received packet is copied into a newly allocated memory chunk for further
processing by the assigned callback. Once this is done, the memory is free'd.
This is repeated for each received packet making the memory allocation / free
an expensive task. To optimize this process, a memory pool is defined which
is sized identically to the queue's buffer.
During tests it could be seen that more than 95% of all messages were sized
below the standard buffer_size of 1k.
Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Christof Schmitt <cs@samba.org>
Autobuild-User(master): Christof Schmitt <cs@samba.org>
Autobuild-Date(master): Fri Dec 7 23:27:16 CET 2018 on sn-devel-144
The memmove operation is quite expensive, therefore,
a new buffer attribute "offset" is introduced to support
an optimized buffer processing.
The optimization is to "walk" through the buffer and process
each packet until the buffer is fully processed (empty)
without requiring any memmove.
Only if a packet is in-complete, the buffer content is moved
and the new data is read from the queue.
This way almost all memmove operations are eliminated.
Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Christof Schmitt <cs@samba.org>
Since 4.9.0, the log messages can be confusing if a required database
directory does not exist. Explicitly check for database directories,
logging a clear error and exiting if one is missing.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13696
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): Mon Dec 3 06:56:41 CET 2018 on sn-devel-144
Ideally this would just involve using "test -r". However, operating
system security features may mean that kernel stacks are not readable
even though they appear to be.
Instead, try reading that stack of a process on the test node. If
that succeeds then so should reading the stack of the "stuck" sleep
process in the test.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13684
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Tim Beale <timbeale@catalyst.net.nz>
Autobuild-User(master): Tim Beale <timbeale@samba.org>
Autobuild-Date(master): Thu Nov 15 08:15:32 CET 2018 on sn-devel-144
