Thanks, I'll check it.
I want to search also if there is any way to cache file metadata on client, to lower the MDS load. I suppose that files are cached but the client check with MDS if there are changes on files. On my server files are the most of time read-only so MDS data can be also cached for a while.
Greetings!!
El 22 feb. 2018 3:59, "Patrick Donnelly" <pdonnell@xxxxxxxxxx> escribió:
Hello Daniel,
On Wed, Feb 21, 2018 at 10:26 AM, Daniel Carrasco <d.carrasco@xxxxxxxxx> wrote:
> Is possible to make a better distribution on the MDS load of both nodes?.
We are aware of bugs with the balancer which are being worked on. You
can also manually create a partition if the workload can benefit:
https://ceph.com/community/new-luminous-cephfs-subtree- pinning/
> Is posible to set all nodes as Active without problems?
No. I recommend you read the docs carefully:
http://docs.ceph.com/docs/master/cephfs/multimds/
> My last question is if someone can recomend me a good client configuration
> like cache size, and maybe something to lower the metadata servers load.
>>
>> ##
>> [mds]
>> mds_cache_size = 250000
>> mds_cache_memory_limit = 792723456
You should only specify one of those. See also:
http://docs.ceph.com/docs/master/cephfs/cache-size- limits/
--
Patrick Donnelly
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