On 05/07/2014 02:05 PM, Gandalf Corvotempesta wrote: > Very simple question: what happen if server bound to the cache pool goes down? > For example, a read-only cache could be archived by using a single > server with no redudancy. > Is ceph smart enough to detect that cache is unavailable and > transparently redirect all request to the main pool as usual ? > > This allow the usage of one very big server as cache-only. No need for > redundacy. Not sure about that :) > > Second question: how can I set cache pool to be on a defined OSDs list > and not distributed across all OSDs ? Should I change the crushmap ? I > would like to set a single server (and all of its OSDs) for the cache > pool. Create a ruleset where only that host/OSD is in and change the crush_ruleset setting for the cache pool to use that specific ruleset. > _______________________________________________ > ceph-users mailing list > ceph-users at lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > -- Wido den Hollander 42on B.V. Ceph trainer and consultant Phone: +31 (0)20 700 9902 Skype: contact42on
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