On Fri, Jun 29, 2012 at 2:06 PM, Gregory Farnum <greg@xxxxxxxxxxx> wrote: > Okay, there's two things I'd do here. First, create a cluster that > only has one MDS — the multi-MDS system is significantly less stable. Ok, will do. > Second, you've got 3 monitors doing frequent fsyncs, and 4 OSDs doing > frequent syncs, which are all funneling into a single disk. That's > going to go poorly no matter what you're doing. ;) Try doing a smaller > cluster with just one monitor, one or two OSDs, and one MDS. Oh, I missed that part. The disks on the dom0 are actually logical volumes on top of a (software) RAID5 with four physical disks. That may, of course, not be a better situation. =) In any case, I'll rebuild the current four machines into one MON, one MDS and two OSDs and see how that goes. Thanks for the advice. Brian. -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html