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kill_ctdbd() kills the daemon and then removes the PID file. This is racy because a new daemon could write a new PID file in between the kill and the removal. Reversing these steps would be an improvement. However, none of the places where kill_ctdbd() is called is a safe place to remove the PID file. There is always a chance that a new daemon could start, write a new PID file and then kill_ctdbd() could remove the new PID file. ctdbd is able to overwrite a stale PID file by checking to see if it is locked. Therefore, entirely drop removal of the PID file from ctdbd_wrapper. BUG: https://bugzilla.samba.org/show_bug.cgi?id=12287 Signed-off-by: Martin Schwenke <martin@meltin.net> Reviewed-by: Volker Lendecke <vl@samba.org> |
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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.