Hi, Andrei. Thanks for the tip, but there are problems with reading some VMs. Can the impact parameter (osd_recover_clone_overlap) to lock the RBD? Thank! 2014-09-11 16:49 GMT+04:00 Andrei Mikhailovsky <andrei at arhont.com>: > Irek, > > have you change the ceph.conf file to change the recovery p riority? > > Options like these might help with prioritising repair/rebuild io with the > client IO: > > osd_recovery_max_chunk = 8388608 > osd_recovery_op_priority = 2 > osd_max_backfills = 1 > osd_recovery_max_active = 1 > osd_recovery_threads = 1 > > > Andrei > ------------------------------ > *From: *"Irek Fasikhov" <malmyzh at gmail.com> > *To: *ceph-users at lists.ceph.com > *Sent: *Thursday, 11 September, 2014 1:07:06 PM > *Subject: *Rebalancing slow I/O. > > > Hi,All. > > DELL R720X8,96 OSDs, Network 2x10Gbit LACP. > > When one of the nodes crashes, I get very slow I / O operations on virtual > machines. > A cluster map by default. > [ceph at ceph08 ~]$ ceph osd tree > # id weight type name up/down reweight > -1 262.1 root defaults > -2 32.76 host ceph01 > 0 2.73 osd.0 up 1 > ........................... > 11 2.73 osd.11 up 1 > -3 32.76 host ceph02 > 13 2.73 osd.13 up 1 > .............................. > 12 2.73 osd.12 up 1 > -4 32.76 host ceph03 > 24 2.73 osd.24 up 1 > ............................ > 35 2.73 osd.35 up 1 > -5 32.76 host ceph04 > 37 2.73 osd.37 up 1 > ............................. > 47 2.73 osd.47 up 1 > -6 32.76 host ceph05 > 48 2.73 osd.48 up 1 > ............................... > 59 2.73 osd.59 up 1 > -7 32.76 host ceph06 > 60 2.73 osd.60 down 0 > ............................... > 71 2.73 osd.71 down 0 > -8 32.76 host ceph07 > 72 2.73 osd.72 up 1 > ................................ > 83 2.73 osd.83 up 1 > -9 32.76 host ceph08 > 84 2.73 osd.84 up 1 > ................................ > 95 2.73 osd.95 up 1 > > > If I change the cluster map on the following: > root---| > | > |-----rack1 > | | > | host ceph01 > | host ceph02 > | host ceph03 > | host ceph04 > | > |-------rack2 > | > host ceph05 > host ceph06 > host ceph07 > host ceph08 > What will povidenie cluster failover one node? And how much will it affect > the performance? > Thank you > > -- > ? ?????????, ??????? ???? ??????????? > ???.: +79229045757 > > _______________________________________________ > ceph-users mailing list > ceph-users at lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > > -- ? ?????????, ??????? ???? ??????????? ???.: +79229045757 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.ceph.com/pipermail/ceph-users-ceph.com/attachments/20140924/f99f8ce3/attachment.htm>
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