I've done something similar. I used a process like this: ceph osd set noout ceph osd set nodown ceph osd set nobackfill ceph osd set norebalance ceph osd set norecover
Then I did my work to manually remove/destroy the OSDs I was replacing, brought the replacements online, and unset all of those options. Then the I/O world collapsed for a little while as the new OSDs were backfilled. Some of those might be redundant and/or unnecessary. I'm not a ceph expert. Do this at your own risk. Etc. jonathan On Wed, Jan 9, 2019 at 7:58 AM Mosi Thaunot <pourlesma...@gmail.com> wrote: > Hello, > > I have a cluster of 3 nodes, 3 OSD per nodes (so 9 OSD in total), > replication set to 3 (os each node has a copy). > > For some reason, I would like to recreate the node 1. What I have done : > 1. out the 3 OSDs of node 1, stop then, then destroy them (almost in the > same time) > 2. recreate the new node 1 and add the 3 new OSDs > > My problem is that after step 1, I had to wait for backfilling to complete > (to get only active+clean+remapped and active+undersized+degraded PGs). > Then, wait again in step 2 to get the cluster healthy. > > Could I avoid the wait of step 1 ? What should I do then ? I was thinking : > - set the OSDs to noout > - out/stop/destroy the 3 OSDs of node 1 (in the same time) > - reinstall node 1 (I have a copy of all the configuration files) and add > the 3 nodes > > Would that work ? > > Thanks and regards, > Mosi > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > -- Jonathan Woytek http://www.dryrose.com KB3HOZ PGP: 462C 5F50 144D 6B09 3B65 FCE8 C1DC DEC4 E8B6 AABC
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