On Thu, 10 Apr 2014, Greg Poirier wrote:
> Hi,
> I have about 200 VMs with a common RBD volume as their root filesystem and a
> number of additional filesystems on Ceph.
>
> All of them have stopped responding. One of the OSDs in my cluster is marked
> full. I tried stopping that OSD to force things to rebalance or at least go
> to degraded mode, but nothing is responding still.
>
> I'm not exactly sure what to do or how to investigate. Suggestions?
Try marking the osd out or partially out (ceph osd reweight N .9) to move
some data off, and/or adjust the full ratio up (ceph pg set_full_ratio
.95). Note that this becomes increasinly dangerous as OSDs get closer to
full; add some disks.
sage
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