Hello Andrea When you use multipath -v3 look this parameters fast_io_fail_tmo,dev_loss_tmo maybe your watchdog timeout is too low and you took for more the 10 seconds
Thanks 2013/5/3 andrea cuozzo <andrea.cuo...@sysma.it> > Thanks Emmanuel, > > using the -v3 switch I can see that multipath is querying my local /dev/sda > disk too, which is unneded, so I blacklisted /dev/sda in multipath.conf and > reloaded multipath; it migh not be related to my problem but it was a > mistake indeed. Thanks. My vision on all the timouts involved in my > scenario > is: > > - each hba has 1 second (qlport_down_retry=1 ) to manage a port down event > and report upwards > - multipathd has at most 5 seconds (polling_interval 5) to notice for path > failures and do its job > - sbd attempts to read its partition each second (Timeout (loop) :1) and > has > 10 seconds (timeout (watchdog):10 ) before the watchdog reboots the server > (I'm assuming SBD doesn't feed the watchdog unless the reading attempt is > succesfull). > > I can see this working as expected using the multipathd -k interactive > console to fail and reinstate paths, and reading the relative multipathd > messages on the syslog about path lost and reinstated, What makes me think > my problem might not be multipath related is that there's no sign of port > down or path lost messages in the syslog when the problem happens, there's > just the sbd delay countdown. > > andrea > > > > Date: Thu, 2 May 2013 20:18:04 +0200 > From: emmanuel segura <emi2f...@gmail.com> > To: The Pacemaker cluster resource manager > <pacemaker@oss.clusterlabs.org> > Subject: Re: [Pacemaker] Frequent SBD triggered server reboots > Message-ID: > < > cae7pj3dgq4ksovr8svfk0ypregc67yg7prrjtvqop2ba8vc...@mail.gmail.com> > Content-Type: text/plain; charset="iso-8859-1" > > if you think your problems are related to multipath timeout, try to use > multipath -v3 and look well the sbd timeout > > Thanks > > > > > > _______________________________________________ > Pacemaker mailing list: Pacemaker@oss.clusterlabs.org > http://oss.clusterlabs.org/mailman/listinfo/pacemaker > > Project Home: http://www.clusterlabs.org > Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf > Bugs: http://bugs.clusterlabs.org > -- esta es mi vida e me la vivo hasta que dios quiera
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