On Thu, Mar 29, 2012 at 7:07 PM, Vladislav Bogdanov <bub...@hoster-ok.com> wrote: > Hi Andrew, all, > > I'm continuing experiments with lustre on stacked drbd, and see > following problem: > > I have one drbd resource (ms-drbd-testfs-mdt0000) is stacked on top of > other (ms-drbd-testfs-mdt0000-left), and have following constraints > between them: > > colocation drbd-testfs-mdt0000-with-drbd-testfs-mdt0000-left inf: > ms-drbd-testfs-mdt0000 ms-drbd-testfs-mdt0000-left:Master > order drbd-testfs-mdt0000-after-drbd-testfs-mdt0000-left inf: > ms-drbd-testfs-mdt0000-left:promote ms-drbd-testfs-mdt0000:start > > Then I have filesystem mounted on top of ms-drbd-testfs-mdt0000 > (testfs-mdt0000 resource). > > colocation testfs-mdt0000-with-drbd-testfs-mdt0000 inf: testfs-mdt0000 > ms-drbd-testfs-mdt0000:Master > order testfs-mdt0000-after-drbd-testfs-mdt0000 inf: > ms-drbd-testfs-mdt0000:promote testfs-mdt0000:start > > When I trigger event which causes many resources to stop (including > these three), LogActions output look like: > > LogActions: Stop drbd-local#011(lustre01-left) > LogActions: Stop drbd-stacked#011(Started lustre02-left) > LogActions: Stop drbd-testfs-local#011(Started lustre03-left) > LogActions: Stop drbd-testfs-stacked#011(Started lustre04-left) > LogActions: Stop lustre#011(Started lustre04-left) > LogActions: Stop mgs#011(Started lustre01-left) > LogActions: Stop testfs#011(Started lustre03-left) > LogActions: Stop testfs-mdt0000#011(Started lustre01-left) > LogActions: Stop testfs-ost0000#011(Started lustre01-left) > LogActions: Stop testfs-ost0001#011(Started lustre02-left) > LogActions: Stop testfs-ost0002#011(Started lustre03-left) > LogActions: Stop testfs-ost0003#011(Started lustre04-left) > LogActions: Stop drbd-mgs:0#011(Master lustre01-left) > LogActions: Stop drbd-mgs:1#011(Slave lustre02-left) > LogActions: Stop drbd-testfs-mdt0000:0#011(Master lustre01-left) > LogActions: Stop drbd-testfs-mdt0000-left:0#011(Master lustre01-left) > LogActions: Stop drbd-testfs-mdt0000-left:1#011(Slave lustre02-left) > LogActions: Stop drbd-testfs-ost0000:0#011(Master lustre01-left) > LogActions: Stop drbd-testfs-ost0000-left:0#011(Master lustre01-left) > LogActions: Stop drbd-testfs-ost0000-left:1#011(Slave lustre02-left) > LogActions: Stop drbd-testfs-ost0001:0#011(Master lustre02-left) > LogActions: Stop drbd-testfs-ost0001-left:0#011(Master lustre02-left) > LogActions: Stop drbd-testfs-ost0001-left:1#011(Slave lustre01-left) > LogActions: Stop drbd-testfs-ost0002:0#011(Master lustre03-left) > LogActions: Stop drbd-testfs-ost0002-left:0#011(Master lustre03-left) > LogActions: Stop drbd-testfs-ost0002-left:1#011(Slave lustre04-left) > LogActions: Stop drbd-testfs-ost0003:0#011(Master lustre04-left) > LogActions: Stop drbd-testfs-ost0003-left:0#011(Master lustre04-left) > LogActions: Stop drbd-testfs-ost0003-left:1#011(Slave lustre03-left) > > For some reason demote is not run on both mdt drbd esources (should > it?), so drbd RA prints warning about that.
So its not just a logging error, the demote really isn't scheduled? That would be bad, can you file a bug please? > > What I see then is that ms-drbd-testfs-mdt0000-left is tried to stop > before ms-drbd-testfs-mdt0000. > > More, testfs-mdt0000 filesystem resource is not stopped before stopping > drbd-testfs-mdt0000. > > I have advisory ordering constraints between mdt and ost filesystem > resources, so all ost's are stopped before mdt. Thus mdt stop is delayed > a bit. May be this influences what happens. > > I'm pretty sure I have correct constraints for at least these three > resources, so it looks like a bug, because mandatory ordering is not > preserved. > > I can produce report for this. > > Best, > Vladislav > > _______________________________________________ > 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 _______________________________________________ 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
