> Hi, > > as far as I understand it, > > you get no real benefit with doing them one by one, as each osd add, can > cause a lot of data to be moved to a different osd, even tho you just > rebalanced it.
Less than with older releases, but yeah. I’ve known someone who advised against doing them in parallel because one would — for a time — have PGs with multiple remaps in the acting set. The objection may have been paranoia, I’m not sure. One compromise is to upweight the new OSDs one node at a time, so the churn is limited to one failure domain at a time. — aad _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-le...@ceph.io
