On Fri, Feb 17, 2017 at 10:42 AM, nigel davies <nigdav007@xxxxxxxxx> wrote: > How is the best way to added multiple osd's to an active cluster? > As the last time i done this i all most killed the VM's we had running on > the cluster You possibly mean that messing with OSDs caused the cluster to reorganise the date and the recovery/backfill slowed you down. If that's the case see --osd-max-backfills and --osd-recovery-max-active options, and use them like $ ceph tell osd.* injectargs '--osd-max-backfills 1' '--osd-recovery-max-active 1' but be aware that slowing down recovery makes it take longer and longer recovery mean longer dangerous state of the cluster (in case of any unfortunate event while recovering). g _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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