Actually, I already have recovered OSDs and MON daemon back to the cluster according to http://ceph.com/docs/master/rados/operations/add-or-rm-osds/ and http://ceph.com/docs/master/rados/operations/add-or-rm-mons/ .
But doc has missed info about removing/add MDS.
How I can recovery MDS daemon for failed node?
On Wed, Mar 20, 2013 at 3:23 PM, Dave (Bob) <dave@xxxxxxxxxxxxxxxxxx> wrote:
Igor,
I am sure that I'm right in saying that you just have to create a new
filesystem (btrfs?) on the new block device, mount it, and then
initialise the osd with:
ceph-osd -i <the osd number> --mkfs
Then you can start the osd with:
ceph-osd -i <the osd number>
Since you are replacing an osd that already existed, the cluster knows
about it, and there is a key for it that is known.
I don't claim any great expertise, but this is what I've been doing, and
the cluster seems to adopt the new osd and sort everything out.
David
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Igor Laskovy
facebook.com/igor.laskovy
Kiev, Ukraine
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