On 05/18/2018 11:19 PM, Patrick Donnelly wrote:
> So, you would want to have a standby-replay
> daemon for each rank or just have normal standbys. It will likely
> depend on the size of your MDS (cache size) and available hardware.

jftr, having 3 active mds and 3 standby-replay resulted May 20217 in a
longer downtime for us due to http://tracker.ceph.com/issues/21749

(http://lists.ceph.com/pipermail/ceph-users-ceph.com/2017-October/thread.html#21390
- thanks again for the help back then, still much appreciated)

we're not using standby-replay MDS's anymore but only "normal" standby,
and didn't have had any problems anymore (running kraken then, upgraded
to luminous last fall).

Regards,
Daniel
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