Second this. Also for long-lasting snapshot problem and related performance issues I may say that cuttlefish improved things greatly, but creation/deletion of large snapshot (hundreds of gigabytes of commited data) still can bring down cluster for a minutes, despite usage of every possible optimization.
On Thu, Aug 1, 2013 at 12:22 PM, Stefan Priebe - Profihost AG <[email protected]> wrote: > Hi, > > i still have recovery issues with cuttlefish. After the OSD comes back > it seem to hang for around 2-4 minutes and then recovery seems to start > (pgs in recovery_wait start to decrement). This is with ceph 0.61.7. I > get a lot of slow request messages an hanging VMs. > > What i noticed today is that if i leave the OSD off as long as ceph > starts to backfill - the recovery and "re" backfilling wents absolutely > smooth without any issues and no slow request messages at all. > > Does anybody have an idea why? > > Greets, > Stefan > -- > To unsubscribe from this list: send the line "unsubscribe ceph-devel" in > the body of a message to [email protected] > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
