On Fri, 22 Aug 2014, Andrei Mikhailovsky wrote: > Does that also mean that scrubbing and deep-scrubbing also squishes data > out of the cache pool? Could someone from the ceph community confirm > this?
Scrubbing activities have no effect on the cache; don't worry. :) sage > > Thanks > > > ----- Original Message ----- > From: "Robert LeBlanc" <rob...@leblancnet.us> > To: "Andrei Mikhailovsky" <and...@arhont.com> > Cc: ceph-users@lists.ceph.com > Sent: Friday, 22 August, 2014 8:21:08 PM > Subject: Re: [ceph-users] pool with cache pool and rbd export > > > My understanding is that all reads are copied to the cache pool. This would > indicate that cache will be evicted. I don't know to what extent this will > affect the hot cache because we have not used a cache pool yet. I'm currently > looking into bcache fronting the disks to provide caching there. > > > Robert LeBlanc > > > > On Fri, Aug 22, 2014 at 12:41 PM, Andrei Mikhailovsky < and...@arhont.com > > wrote: > > > Hello guys, > > I am planning to perform regular rbd pool off-site backup with rbd export and > export-diff. I've got a small ceph firefly cluster with an active writeback > cache pool made of couple of osds. I've got the following question which I > hope the ceph community could answer: > > Will this rbd export or import operations affect the active hot data in the > cache pool, thus evicting from the cache pool the real hot data used by the > clients. Or does the process of rbd export/import effect only the osds and > does not touch the cache pool? > > Many thanks > > Andrei > > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > > _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
