Hello, You can use these settings to lower the impact of backfilling and recovery operations: osd max backfills osd recovery max active Additionally, if you are using the cfq io scheduler, with these you can set the io priority of recovery operations versus client operations: osd client op priority osd recovery op priority Finally, if the osd is down temporarily because of a maintenance for example, you can set the noout flag (ceph osd set noout) so that backfilling will not occur during this time. Regards, Martin ________________________________________ From: ceph-users <ceph-users-bounces@xxxxxxxxxxxxxx> on behalf of wangsongbo <songbo1227@xxxxxxxxx> Sent: October 9, 2015 11:52 PM To: ceph-devel; ceph-users@xxxxxxxx Subject: [ceph-users] How to reduce the influenct on the IO when an osd is marked out? Hi all, when an osd is marked out, relative IO will be blocked, in which case, application built on ceph will fail.According to test result, the larger a data is,the longer it will take to elapse. How to reduce the impact of this process on the IO? Thanks and Regards, WangSongbo _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com-- 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
