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master to perform an explicit ip reallocation.
This is more reliable and faster than having the recovery dameon track these
changes, and since we now have an explicit method to ask the recovery daemon
to perform an explicit ip reallocation, we should use this.
(This used to be ctdb commit 3807681e74f4bfe92befdae6ed616ff5f1a99880)
this allows us to configure and enable nfs at runtime without having to restart ctdbd
(This used to be ctdb commit f6e39d35713475defaa08a623e194f3f2f8f7d53)
This patch ensures that we lock all non-notify related databases first and
then the notify databases to avoiud a deadlock where samba needs to lock records on two databases at once (and notify being the second database).
Newer versions of samba would instead use the set-db-prio control to set this explicitely on a database per database basis instead of relying on hardcoded database names. This patch will be reverted in the future when all updated versions of samba has been pushed out.
(This used to be ctdb commit 70e7781df1f118a0e2632a9c634f3fd388fa6c8c)
transactions we start across all tdb databased during the recovery.
this allows us to properly clean up and delete these tdb transactions on a
recovery failure.
(This used to be ctdb commit b2ce8b900a7d00944c84e0574fea5b371064a06d)
There are 2 problems with this code:
* The loop in ctdb_check_directories_probe() breaks on filenames
containing whitespace.
The fix to protect them is to pass "$@" to this function and have it
operate on "$@".
Note that there's still a problem with whitespace in filenames in
the 50.samba eventscript. To fix this ctdb_check_directories_probe
should read the filenames from stdin. Another time...
* The check for '%' in filenames in ctdb_check_directories_probe()
ends up involving several forks. On a modern machine this can cost
a couple of minutes when checking a large number of directories.
The fix is to use a case statement.
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit eb1fecaef9aa5cb85dff7d4f7af8a9878deabed8)
Each recovery that involves IP reassignments results in a restart of
vsftpd in the "recovered" event. Currently, we can have several
recoveries in quick succession and the "monitor" event following each
can fail because vsftpd isn't ready yet. This results in cumulative
failures, so the node is marked unhealthy, even though vsftpd has
never had a proper opportunity to become ready.
This resets the fail count after each recovery.
While we're here, also move the delete of the restart flag file into
the body of the conditional.
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit 318abeb4b913a8d846e7eaf4cf5c2a67b61ce974)
database priorities will be used to control in which order databases are locked during recovery in.
(This used to be ctdb commit 67741c0ee01916d94cace8e9462ef02507e06078)
this prevents a situation where the remove node may cause spurious ip reallocations.
(This used to be ctdb commit dd122351efaeef5475cdec111eb900110d83ec35)
This is useful when we are moving addresses using moveip in the cluster since otherwise if we collide with the recovery daemons own check we could cause a recovery
(This used to be ctdb commit 9c63858c0b22c81eaccb9865a414af0bbb2833d4)
Time can actually go backwards during this test if ntpd happens to
adjust it little bit. So we should cope...
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit 23ae9e9863ea90c6fb3f105403fd098041fa73f4)
test -z really needs its argument to be quoted. Simplified a status
test.
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit fe26da7780545b1ecc0a7da5bc1cf8beaeea94cc)
Change the monitor event in 40.vsftpd so it only fails if there are 2
successive failures connecting to port 21. This reduces the
likelihood of unhealthy nodes due to vsftpd being restarted for
reconfiguration due to node failover or system reconfiguration.
New eventscript functions ctdb_counter_init, ctdb_counter_incr,
ctdb_counter_limit. These are used to count arbitrary things in
eventscripts, depending on the eventscript name and a tag that is
passed, and determine if a specified limit has been hit. They're good
for counting failures!
These functions are used in 40.vsftpd and also in 01.reclock - the
latter used to do the counting without these functions.
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit cfe63636a163730ae9ad3554b78519b3c07d8896)
Remove the explicit vacuum/repack commands from the 00.ctdb eventscript
and implement this in the ctdb daemon.
Combine vacuuming and repacking into one
cheap read traverse to enumerate all candidate records
and one write traverse that both repacks the database and also deletes the record locally where we are lmaster and where the records have already been deleted remotely.
this code also adds initial autotuning heuristics for the vacuum intervals and how many records to delete in each iteration.
minor stylish changes made by ronnie s
(This used to be ctdb commit 95a3ee551241aa164967991fe5efe078e1714bde)
if the reclock file has been set, then this script will test that the
reclock file can actually be accessed.
if the file does not exist, or if the attempts to stat the file hangs,
the node will be marked unhealthy after the third failed monitoring event
and after the tenth failure, ctdb itself will shutdown.
(This used to be ctdb commit 2cb04747887674def299e574fccb827c1c3194e7)
