Is there a bug open for this? I suspect we don't sufficiently throttle the snapshot removal work. -Sam On Thu, Aug 1, 2013 at 7:50 AM, Andrey Korolyov <andrey@xxxxxxx> wrote: > 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 > <s.priebe@xxxxxxxxxxxx> 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 majordomo@xxxxxxxxxxxxxxx >> 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 majordomo@xxxxxxxxxxxxxxx > 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 majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
