On Thu, Apr 23, 2015 at 11:18 AM, Jake Grimmett <[email protected]> wrote:
> Dear All,
>
> I have multiple disk types (15k & 7k) on each ceph node, which I assign to
> different pools, but have a problem as whenever I reboot a node, the OSD's
> move in the CRUSH map.
I just found out that you can customize the way OSDs are automatically
added to the crushmap using an hook script.
I have in ceph.conf:
osd crush location hook = /usr/local/sbin/sc-ceph-crush-location
this will return the correct bucket and root for the specific osd.
I also have
osd crush update on start = true
which should be the default.
This way, whenever an OSD starts, it's automatically added to correct bucket.
ref: http://ceph.com/docs/master/rados/operations/crush-map/#crush-location
.a.
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