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Add a new tunable to control the maximum queue size we allow to a blocked client before we start discarding REQ_MESSAGES instead of queueing them for delivery.
This avoids having queued up very very large number of MESSAGES that samba semds
between eachother to nodes that are blocked/banned/stopped for extended periods
.
(This used to be ctdb commit f76d6fed8f9630450263b9fa4b5fdf3493fb1e11)
we also skip this check if we are already in the process of performing an ip reallocation and not only when we are performing a full recovery.
(This used to be ctdb commit 1a09b02767f3928d3c5db0e0afc59bb938e4a445)
make sure to always create the vactun database and get rid of some annoying log messages
(This used to be ctdb commit 54f9c314a0354f1039208fe6ac7dc159b6db8750)
Add a tuneable so that when scripts starts to hang/timeout, we can make the node unhealthy instead of banned
(This used to be ctdb commit 2e9fc6f0609833c6d8146196011ef780669d615d)
The databases can become frozen a while before we do the actual recovery
since we have the re-recovery timeout.
There is no point in doing much monitoring if we are waiting for a recovery,
or if we are banned.
This will eliminate some annoying log entries where certain tests will fail if the databases are locked.
(This used to be ctdb commit ff824676fab94168707aada7423ae766bc0f711c)
Leave the node as UNHEALTHY this stops clients from accessing the node until
the reclock file can be accessed again
(This used to be ctdb commit f5e9f3007c10a937158bc8cdfabf33c984cf9c50)
so we can spot if there are leaks.
plug two leaks for filedescriptors related to when sending ARP fail
and one leak when we can not parse the local address during tcp connection establish
(This used to be ctdb commit ddd089810a14efe4be6e1ff3eccaa604e4913c9e)
print a full "pstree -p" to the log.
Example :
|-ctdbd(29826)-+-ctdbd(29862)
| `-ctdbd(31897)-+-00.ctdb(31898)---sleep(31908)
change the default timeout to 60 seconds for eventscripts
(This used to be ctdb commit a3406c10d70f89d332eab25d481083142dff987d)
The -f option allows an alternate nodes file to be specified,
overriding the CTDB_NODES_FILE environment variable.
The -n option allows hostnames to be used instead of node numbers.
Using a range of hostnames is invalid, so hostnames can't contain
hyphens ('-') - sorry! You can use this option without a nodes file
by specifying "-f /dev/null".
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit 46474e5f21fd97dd765c616647ff46055a9970e7)
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)
