On 11/17/2015 03:12 PM, German Anders wrote: > Hi all, > > Is there any way to use bcache in an already configured Ceph cluster? > I've both OSD and Journals inside the same OSD daemon, and I want to try > bcache in front of the OSD daemon and also move in the bcache device the > journal, so for example I got: > > /dev/sdc --> SSD disk > /dev/sdc1 --> 1st partition GPT for Journal (5G) > /dev/sdc2 --> 2nd partition GPT for Journal (5G) > /dev/sdc3 --> 3rd partition GPT for Journal (5G) > /dev/sdc4 --> partition GPT for bcache device (200G) > > Then relate */dev/sdf1*, */dev/sdg1 *and*/dev/sdh1* all _OSD daemons 2TB > each in size_, to each of the bcache partitions on the */dev/sdc* > device. Is possible or I will need to 'format' all the devices in order > to do this kind of procedure? any ideas? Or is any other better approach > to this? > You will need to format them since bcache needs a little bit of space. We also tried it, but failed horribly. Just format the disks and let Ceph do the rebalance. > Thanks in advance, > > Regards, > > ** > > *German* > > > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > 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 _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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