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Compilation currently fails, as ctdb_mutex_ceph_rados_helper doesn't
include or link against the samba-util library. Revert back to the
previous strtoull() behaviour, which works fine.
Signed-off-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Fri Mar 1 18:34:18 UTC 2019 on sn-devel-144
In order to detect an value overflow error during
the string to integer conversion with strtoul/strtoull,
the errno variable must be set to zero before the execution and
checked after the conversion is performed. This is achieved by
using the wrapper function strtoul_err and strtoull_err.
Signed-off-by: Swen Schillig <swen@linux.ibm.com>
Reviewed-by: Ralph Böhme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Kill the ctdb_mutex_ceph_rados_helper with SIGKILL and then confirm
that the lock is automatically released following expiry.
Signed-off-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Samuel Cabrero <scabrero@suse.de>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Autobuild-User(master): David Disseldorp <ddiss@samba.org>
Autobuild-Date(master): Thu Aug 9 16:26:36 CEST 2018 on sn-devel-144
RADOS locks without expiry persist indefinitely. This results in CTDB
deadlock during failover if the recovery master dies unexpectedly, as
subsequently elected recovery master nodes can't obtain the recovery
lock.
Avoid deadlock by using a lock expiration time (10s by default), and
renewing it periodically.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=13540
Signed-off-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Samuel Cabrero <scabrero@suse.de>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
In preparation for adding a lock refresh timer.
Signed-off-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Samuel Cabrero <scabrero@suse.de>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Set a handler for SIGINT to release the lock.
Signed-off-by: Samuel Cabrero <scabrero@suse.de>
Reviewed-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Minor updates to other manual pages for compatibility.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
The num_recoveries metric is declared as PM_TYPE_U32, so should be
used accordingly.
Suggested-by: Nathan Scott <nathans@redhat.com>
Signed-off-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Support backward compatibility by checking for __pmID_int type, which
was previously in <pcp/impl.h>. In the new version, this type is not
defined anymore and there is no need to include <pcp/impl.h>.
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 Mar 2 00:38:52 CET 2018 on sn-devel-144
This standalone test script performs the following:
- using ctdb_mutex_ceph_rados_helper, take a lock on the Ceph RADOS
object a CLUSTER/$POOL/$OBJECT using the Ceph keyring for $USER
+ confirm that lock is obtained, via ctdb_mutex_ceph_rados_helper "0"
output
- check RADOS object lock state, using the "rados lock info" command
- attempt to obtain the lock again, using ctdb_mutex_ceph_rados_helper
+ confirm that the lock is not successfully taken
- tell the first locker to drop the lock and exit, via SIGTERM
- once the first locker has exited, attempt to get the lock again
+ confirm that this attempt succeeds
Signed-off-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Autobuild-User(master): Amitay Isaacs <amitay@samba.org>
Autobuild-Date(master): Fri Dec 9 07:59:33 CET 2016 on sn-devel-144
ctdb_mutex_ceph_rados_helper implements the cluster mutex helper API
atop Ceph using the librados rados_lock_exclusive()/rados_unlock()
functionality.
Once configured, split brain avoidance during CTDB recovery will be
handled using locks against an object located in a Ceph RADOS pool.
Signed-off-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Add a new option -l to check whether POSIX byte range locks are
working. Usage:
node1$ touch /path/to/cluster-fs/FILE
node1$ ./bin/ping_pong -l /path/to/cluster-fs/FILE
Holding lock, press any key to continue...
You should run the same command on another node now.
node2$ ./bin/ping_pong -l /path/to/cluster-fs/FILE
Output can either be:
Holding lock, press any key to continue...
This means POSIX byte range locks are *not* working.
If you see this instead:
file already locked, calling check_lock to tell us who has it locked...:
check_lock failed: lock held: pid='27375', type='1', start='0', len='0'
Working POSIX byte range locks
Congrats, you have a cluster fs with functional byte range locks!
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Thu Dec 10 08:48:38 CET 2015 on sn-devel-104
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Fri Nov 6 13:43:45 CET 2015 on sn-devel-104
This groups function prototypes for common client/server functions in
common/common.h and removes them from ctdb_private.h.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
Instead of includes.h, include the required header files explicitly.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
This groups function prototypes for system specific functions in
common/system.h and removes them from ctdb_private.h.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
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>
The commit "pmda: Use upstream assigned PCP domain id" updated the
Performance Metrics Namespace (pmns) file, without changing the
corresponding metric identifiers used by the agent.
This change fixes the agent metric identifier values to match the pmns
definitions.
Signed-off-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Sat Mar 22 00:07:31 CET 2014 on sn-devel-104
- increase verbosity with "-v"
- concat error messages (if there are several)
- handle 255 return code as warning (as it is the return code when any of the node is missing)
- read /etc/ctdb/nodes remotely (ctdb_check can be run on a non-ctdb host)
(This used to be ctdb commit cea81bdd503f6ef8b5bbd3582a8e0085bb02bc9f)
Because of commit a779d83a6213e2ba
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit a4afe7af9c9391048d6f80135bbd5e15367770c7)
This fixes the floating point error if num_locks = 0.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
(This used to be ctdb commit 16afe36de52561a62372c14b567683dc898369d5)
The pmda stuff is no longer built by default even if the headers are
available. To build, run "configure --enable-pmda".
Signed-off-by: Martin Schwenke <martin@meltin.net>
Pair-programmed-with: Amitay Isaacs <amitay@gmail.com>
(This used to be ctdb commit 194f7a0dec26d693a5f3e6734b1c82f61f8e4d19)
The ctdb_statistics structure was recently changed. Update the PMDA to
dereference the new structure member names.
Signed-off-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
(This used to be ctdb commit e5a5ab53173d9aa4190ddf68c4ae316d4473eb56)
This is to verify that the fcntl F_GETLK call reports F_UNLCK if called
from a process already holding a lock. This is for example used by samba's
strict locking code in combination with "posix locking = true".
Signed-off-by: Michael Adam <obnox@samba.org>
(This used to be ctdb commit 4f42d17b74ce891691eee1cead498959cc8e4837)
This plugin is GPL2 or greater as generally found in Nagios.
(this is obviously compatible with GPL3 or greater).
(This used to be ctdb commit df1ac1cfd65f32743ca2588edfdad46ce5a4f03f)
Rebase the CTDB PMDA from 1.0.114 to master:
- Add tevent and ctdb_protocol includes
- Handle latency metrics now stored under struct latency_counter
- Add new metric for the num_recoveries counter
(This used to be ctdb commit 2165a6f5117a71f9f97f46be9708fa34c037e17c)
