+1 on adding them all at the same time. All these methods that gradually increase the weight aren't really necessary in newer releases of Ceph.
Paul -- Paul Emmerich Looking for help with your Ceph cluster? Contact us at https://croit.io croit GmbH Freseniusstr. 31h 81247 München www.croit.io Tel: +49 89 1896585 90 On Wed, Jul 24, 2019 at 8:59 PM Reed Dier <reed.d...@focusvq.com> wrote: > Just chiming in to say that this too has been my preferred method for > adding [large numbers of] OSDs. > > Set the norebalance nobackfill flags. > Create all the OSDs, and verify everything looks good. > Make sure my max_backfills, recovery_max_active are as expected. > Make sure everything has peered. > Unset flags and let it run. > > One crush map change, one data movement. > > Reed > > > That works, but with newer releases I've been doing this: > > - Make sure cluster is HEALTH_OK > - Set the 'norebalance' flag (and usually nobackfill) > - Add all the OSDs > - Wait for the PGs to peer. I usually wait a few minutes > - Remove the norebalance and nobackfill flag > - Wait for HEALTH_OK > > Wido > > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > > > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >
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