Changes of scrubbing?

2014-05-20 Thread Guang Yang
Hi ceph-devel, Like some users of Ceph, we are using Ceph for a latency sensitive project, and scrubbing (especially deep-scrubbing) impacts the SLA in a non-trivial way, as commodity hardware could fail in one way or the other, I think it is essential to have scrubbing enabled to preserve data

Re: [RFC] add rocksdb support

2014-05-20 Thread Sage Weil
Hi Xinxin, I've pushed an updated wip-rocksdb to github/liewegas/ceph.git that includes the latest set of patches with the groundwork and your rocksdb patch. There is also a commit that adds rocksdb as a git submodule. I'm thinking that, since there aren't any distro packages for rocksdb at t

New Defects reported by Coverity Scan for ceph (fwd)

2014-05-20 Thread Sage Weil
--- Begin Message --- Hi, Please find the latest report on new defect(s) introduced to ceph found with Coverity Scan. Defect(s) Reported-by: Coverity Scan Showing 1 of 1 defect(s) ** CID 1214678: Unchecked return value (CHECKED_RETURN) /osd/OSD.cc: 318 in OSDService::_maybe_split_pgid(std

Re: [ceph-users] 70+ OSD are DOWN and not coming up

2014-05-20 Thread Sage Weil
On Tue, 20 May 2014, Karan Singh wrote: > Hello Cephers , need your suggestion for troubleshooting. > > My cluster is terribly struggling , 70+ osd are down out of 165 > > Problem ?>OSD are getting marked out of cluster and are down. The cluster is > degraded. On checking logs of failed OSD we ar

Re: Signed-off-by and aliases

2014-05-20 Thread Richard Fontana
On Tue, May 20, 2014 at 07:31:59AM +0200, Loic Dachary wrote: > However, I know of at least one other instance where finding a way > to handle aliases would allow contributors to participate in the > Ceph project. OVH is a large hosting company employing a number of > developers and management exp

Helper for state replication machine

2014-05-20 Thread Andrey Korolyov
Hello, I do not know about how many of you aware of this work of Michael Hines [0], but looks like it can be extremely usable for critical applications using qemu and, of course, Ceph at the block level. My thought was that if qemu rbd driver can provide any kind of metadata interface to mark each