On 06/13/2014 10:56 AM, David wrote:
Hi,

We’re going to take down one OSD node for maintenance (add cpu + ram) which 
might take 10-20 minutes.
What’s the best practice here in a production cluster running dumpling 
0.67.7-1~bpo70+1?


I suggest:

$ ceph osd set noout

This way NO OSD will be marked as out and prevent data re-distribution.

After the OSDs are back up and synced:

$ ceph osd unset noout

Kind Regards,
David Majchrzak

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