Re: [ceph-users] "rbd snap rm" overload my cluster (during backups)

2013-04-25 Thread Andrey Korolyov
Yep, 0.60 do all snapshot-related things way faster and it is obviously faster on r/w with small blocks - comparing to 0.56.4 on same disk commit percentage I may say ten times faster on average request in-flight time. On Mon, Apr 22, 2013 at 7:37 PM, Andrey Korolyov wrote: > Mentioned cluster is

Re: [ceph-users] "rbd snap rm" overload my cluster (during backups)

2013-04-22 Thread Andrey Korolyov
Mentioned cluster is in production, but I can compare number of slow reqs on the test with different versions and report it. On Mon, Apr 22, 2013 at 7:24 PM, Sage Weil wrote: > On Mon, 22 Apr 2013, Andrey Korolyov wrote: >> On Mon, Apr 22, 2013 at 7:10 PM, Sage Weil wrote: >> > What version of C

Re: [ceph-users] "rbd snap rm" overload my cluster (during backups)

2013-04-22 Thread Sage Weil
On Mon, 22 Apr 2013, Andrey Korolyov wrote: > On Mon, Apr 22, 2013 at 7:10 PM, Sage Weil wrote: > > What version of Ceph are you running? > > > > sage > > 0.56.4 with couple of backports from bobtail, but I`m not sure if > version matters - the same behaviour was around from early 0.5x > releases

Re: [ceph-users] "rbd snap rm" overload my cluster (during backups)

2013-04-22 Thread Andrey Korolyov
On Mon, Apr 22, 2013 at 7:10 PM, Sage Weil wrote: > What version of Ceph are you running? > > sage 0.56.4 with couple of backports from bobtail, but I`m not sure if version matters - the same behaviour was around from early 0.5x releases. > > On Mon, 22 Apr 2013, Andrey Korolyov wrote: > >> I ha

Re: [ceph-users] "rbd snap rm" overload my cluster (during backups)

2013-04-22 Thread Sage Weil
What version of Ceph are you running? sage On Mon, 22 Apr 2013, Andrey Korolyov wrote: > I had observed that the slow requests up to 10-20 seconds on writes > may be produced immediately after creation or deletion of a snapshot > of relatively large image, despite that image may be entirely unu

Re: [ceph-users] "rbd snap rm" overload my cluster (during backups)

2013-04-22 Thread Andrey Korolyov
I had observed that the slow requests up to 10-20 seconds on writes may be produced immediately after creation or deletion of a snapshot of relatively large image, despite that image may be entirely unused at the moment. On Sun, Apr 21, 2013 at 7:44 PM, Gregory Farnum wrote: > Which version of C

Re: [ceph-users] "rbd snap rm" overload my cluster (during backups)

2013-04-21 Thread Olivier Bonvalet
I use ceph 0.56.4 ; and to be fair, a lot of stuff are «doing badly» on my cluster, so maybe I have a general OSD problem. Le dimanche 21 avril 2013 à 08:44 -0700, Gregory Farnum a écrit : > Which version of Ceph are you running right now and seeing this with > (Sam reworked it a bit for Cuttlefi

Re: [ceph-users] "rbd snap rm" overload my cluster (during backups)

2013-04-21 Thread Gregory Farnum
Which version of Ceph are you running right now and seeing this with (Sam reworked it a bit for Cuttlefish and it was in some of the dev releases)? Snapshot deletes are a little more expensive than we'd like, but I'm surprised they're doing this badly for you. :/ -Greg Software Engineer #42 @ http: