Re: OSD down after PG increase

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 03/13/2014 02:08 AM, Gandalf Corvotempesta wrote:
> I've increased PG number to a running cluster.
> After this operation, all OSDs from one node was marked as down.
> 
> Now, after a while, i'm seeing that OSDs are slowly coming up again
> (sequentially) after rebalancing.
> 
> Is this an expected behaviour ?

Hello Gandalf,

Yes, if you have essentially high amount of commited data in the cluster
and/or large number of PG(tens of thousands). If you have a room to
experiment with this transition from scratch you may want to play with
numbers in the OSD` queues since they causing deadlock-like behaviour on
operations like increasing PG count or large pool deletion. If cluster
has no I/O at all at the moment, such behaviour is not expected definitely.

> _______________________________________________
> ceph-users mailing list
> ceph-users@xxxxxxxxxxxxxx
> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
> 

_______________________________________________
ceph-users mailing list
ceph-users@xxxxxxxxxxxxxx
http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com




[Index of Archives]     [Information on CEPH]     [Linux Filesystem Development]     [Ceph Development]     [Ceph Large]     [Ceph Dev]     [Linux USB Development]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [xfs]


  Powered by Linux