> Op 31 januari 2017 om 10:22 schreef Martin Palma <martin@xxxxxxxx>:
>
>
> Hi all,
>
> our cluster is currently performing a big expansion and is in recovery
> mode (we doubled in size and osd# from 600 TB to 1,2 TB).
>
Yes, that is to be expected. When not all PGs are active+clean the MONs will not trim their datastore.
> Now we get the following message from our monitor nodes:
>
> mon.mon01 store is getting too big! 18119 MB >= 15360 MB -- 94% avail
>
> Reading [0] it says that it is normal in a state of active data
> rebalance and after it is finished it will be compacted.
>
> Should we wait until the recovery is finished or should we perform
> "ceph tell mon.{id} compact" now during recovery?
>
Mainly wait and make sure there is enough disk space. You can try a compact, but that can take the mon offline temp.
Just make sure you have enough diskspace :)
Wido
> Best,
> Martin
>
> [0] https://access.redhat.com/solutions/1982273
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