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Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org>
Autobuild-Date(master): Tue Nov 17 19:52:33 CET 2015 on sn-devel-104
message_send_all traverses serverid.tdb, which can be expensive
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Autobuild-User(master): Volker Lendecke <vl@samba.org>
Autobuild-Date(master): Mon Nov 16 17:55:36 CET 2015 on sn-devel-104
This walks brlock.tdb, which can be time-consuming.
This adds a new includes.h include. It's too much of a pain for me now to
make locking/proto.h clean to include on its own.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
The consolidation will soon be done by a separate process. We need to
avoid the getpid() call in smbprofile_cleanup().
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
We do way too much stuff in the parent smbd in remove_child_pid(). In
particular accessing ctdbd is not a good idea when ctdbd is stuck in something.
We've had a case where smbd exited itself with "ctdb timeout" being set to 60
seconds. ctdb was just stuck doing recoveries, and the parent smbd was sitting
in serverid_exists trying to retrieve a record for a child that had exited. Not
good.
This daemon sits there as parent->cleanupd and receives MSG_SMB_NOTIFY_CLEANUP
messages that hold the serverid and exit status of a former child. The next
commits will step by step empty remove_child_pid in the parent and move the
tasks to the helper.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
The configuration tests raise exceptions by default in later Waf versions,
but the samba tests do not specify whether the errors should be raised or
not. This changes lifts the ambiguity.
Signed-off-by: Thomas Nagy <tnagy@waf.io>
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): Mon Nov 16 14:50:39 CET 2015 on sn-devel-104
The wildcard *.conf already lists named.conf. Adding files
more than once will cause unnecessary rebuilds and raise
errors in later Waf versions.
Signed-off-by: Thomas Nagy <tnagy@waf.io>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
Options.is_install is a deprecated module variable that is more
verbose than bld.is_install and complicates the Waf 1.8 upgrade.
Signed-off-by: Thomas Nagy <tnagy@waf.io>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
Starting to untangle cluster management, database recovery and public
IP allocation. This is a non-trivial subset of the cluster management
code that runs in the recovery daemon on all nodes.
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 Nov 16 11:47:45 CET 2015 on sn-devel-104
Capabilities are used when computing an election result so having them
up-to-date seems like a good idea.
Also update several instances of an ambiguous comment.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
The VNN map is only needed on the recovery master, so no need for all
recovery daemons to retrieve it.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
This is already handled in update_recovery_lock(), which is called
immediately before.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
The only non-obvious part here is dropping the setting of the nodemap
local variable to NULL. If the following control succeeds then it is
set, otherwise return and it doesn't matter.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
That is, using CTDB_CURRENT_NODE makes this more obvious.
Also fix incorrect error messages.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Each recovery daemon knows who the recmaster is and is in sync with
its local daemon. The recovery master is running this check so do not
bother checking with its local daemon - both agree that it is the
recovery master.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
The recovery daemon already knows which node is the master. This
relies on rec->recmaster being correctly initialised and correctly set
during elections.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Recovery should not do cluster management functions. Setting the
recovery master should only be done via an election.
Main loop will determine if recovery master is inconsistent across the
cluster and force an election if necessary.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
The recovery daemon pushes knowledge of recovery master election
progress/result to local daemon. It then retrieves that information
again.
Instead, have the recovery daemon reliably track election
progress/result in rec->recmaster so it doesn't need to be retrieved.
Be careful to maintain consistency by only doing this when the local
daemon has been updated.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
There can be no holes in the nodemap. Even if a node has been deleted
it will take a slot in the nodemap. The only exception is that the
nodemap shrinks if nodes are deleted from the end. That should never
include the master because a node should be shutdown before being
deleted, and an election should already have take place.
To avoid walking off the end of the nodemap nodes array just confirm
that the master node's PNN is a valid index into the array. No need
to walk through the nodemap.
After this, in this section of the code j is now invalid. So use the
master's PNN to index into the nodemap. This is safe.
In the process, clean up some log messages to avoid saying "Force
reelection". It's just an "election".
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
This only applies to monitor events so renaming clarifies this.
Note that this change is not backward compatible. Users with
CTDB_SET_EventScriptTimeoutCount=<n>
in their configuration will get failures when starting CTDB but the
cause will be clearly logged.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
It is only updated for monitor events, so it is meaningless here.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
* The defaults for EventScriptTimeout and EventScriptTimeoutCount are
wrong.
* EventScriptTimeout is the total time for all enabled scripts that
are run for an event, not a single event script.
* EventScriptTimeoutCount only applies to monitor events.
* EventScriptUnhealthyOnTimeout is obsolete, so remove it.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Checking runstates is unnecessary now that nodes that are not RUNNING
will return no available IP addresses. I have no idea why I didn't do
it this way originally.
Tweak the test code to cope with this.
Note that this is a backward-incompatible change. If new and old
versions of CTDB are running together in a cluster and a new node
takes over as recovery master then old nodes will be able to host
public IP addresses before they are in RUNNING runstate. This is
mitigated by the bias towards recovery master stability in elections.
If it is important that nodes do not host IPs until they are RUNNING
then do not restart nodes running the old version.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
The available IPs list is now only non-empty for nodes that are in
RUNNING runstate. So, to avoid running the IP allocation algorithm
when there are no available available IPs, explicitly check for
available IPs rather than checking runstates.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
This will allow wonderful simplification (i.e. removal) of some of the
runstate checking in the takeover run code.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Include system_util.c in ctdb-system subsystem.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Michael Adam <obnox@samba.org>
Autobuild-User(master): Martin Schwenke <martins@samba.org>
Autobuild-Date(master): Mon Nov 16 03:51:36 CET 2015 on sn-devel-104
