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"monitor" events can be cancelled. If a reconfigure action does a service restart then the "monitor" event can be cancelled at the inconvenient moment after the service is stopped. In this case the service stays down and the node may become unhealthy (depending on whether there are any repair actions in the monitor event). A long time ago we did service reconfiguration in "monitor" events following failovers. Service reconfiguration was then moved to the "ipreallocated" event. However, reconfiguration in "monitor" events has been kept as a last resort in case an "ipreallocate" event does not occur. The only important case that this covers is "ctdb deleteip", where "releaseip" events are generated without a corresponding "ipreallocated". Therefore, IPs can be deleted without running the required service reconfiguration. The supported way of removing IP addresses is now via "ctdb reloadips", which always causes a takeover run with a corresponding "ipreallocate" event. This means that service reconfiguration in "monitor" events is no longer required and should be removed because it is unsafe. Also update the associated tests. Make the first confirm that the monitor event no longer does reconfiguration. Change the others to test that monitor status is correctly replayed when something else is doing a reconfigure and currently holds the reconfigure lock. 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 17 06:32:35 CET 2013 on sn-devel-104 |
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| server | ||
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| tests | ||
| tools | ||
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| COPYING | ||
| ctdb.pc.in | ||
| install-sh | ||
| Makefile.in | ||
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| README | ||
| README.Coding | ||
This is the release version of CTDB, a clustered implementation of TDB database used by Samba and other projects to store temporary data. This software is freely distributable under the GNU public license, a copy of which you should have received with this software (in a file called COPYING). For documentation on CTDB, please visit CTDB website http://ctdb.samba.org.