On Fri, Nov 21, 2008 at 21:18, Thomas Mueller <[EMAIL PROTECTED]> wrote: > On Fri, 21 Nov 2008 15:10:22 +0100, Michael Schwartzkopff wrote: > >> Am Freitag, 21. November 2008 15:03 schrieb Thomas Mueller: >>> > Does the drbd OCF resource agent work reliably work with DRBD version >>> > 8? >>> >>> i'm using it with dopd. had some problems, but one is fixed (see thread >>> "probable bug with the OCF drbd script") and the other was produced by >>> me (typo in globally-unique meta-data statement). >>> >>> see also this nice & actual howto: >>> http://clusterlabs.org/mw/DRBD_HowTo_1.0 >> >> Hi, >> >> exactly this howto I was referencing I had in my mind. The developers >> say, that v8 is not 100% tested and OCF RA does not work with >> Master/Master. My questions were: >> - is it working? > > > i only use master/slave. i tested master/master without heartbeat and > ocfs2. it caused troubles like ocfs2 fencing a node and problems with > consistency of the drbd device after that fencing.
I'm guessing you weren't using the "userspace stack" functionality of OCFS2 - otherwise this would never have happened. This is the perfect example of internal split-brain that occurs when applications use a different messaging/membership layer than the rest of the cluster. > > the chance too lose data on splitbrain and the time to get manually back > in a consistent state was too much. > >> - Master/Master with drbdlinks or with OCF RA? > > drbdlinks? what has this to do with drbd directly? > > drbd: manages the drbd device > drbdlinks: When the shared cluster drive is mounted, certain files and > directories are moved aside and links are created into the shared > partition. > > > - Thomas > > > _______________________________________________ > Linux-HA mailing list > [email protected] > http://lists.linux-ha.org/mailman/listinfo/linux-ha > See also: http://linux-ha.org/ReportingProblems > _______________________________________________ Linux-HA mailing list [email protected] http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
