On Thu, 15 Oct 2015, Francois Lafont wrote: > Hi and thanks at all for this good news, ;) > > On 13/10/2015 23:01, Sage Weil wrote: > > > #. Fix the data ownership during the upgrade. This is the preferred option, > > but is more work. The process for each host would be to: > > > > #. Upgrade the ceph package. This creates the ceph user and group. For > > example:: > > > > ceph-deploy install --stable infernalis HOST > > > > #. Stop the daemon(s).:: > > > > service ceph stop # fedora, centos, rhel, debian > > stop ceph-all # ubuntu > > > > #. Fix the ownership:: > > > > chown -R ceph:ceph /var/lib/ceph > > > > #. Restart the daemon(s).:: > > > > start ceph-all # ubuntu > > systemctl start ceph.target # debian, centos, fedora, rhel > > With this (preferred) option, if I understand well, I should > repeat these commands above host-by-host. Personally, my monitors > are hosted in the OSD servers (I have no dedicated monitor server). > So, with this option, I will have osd daemons upgraded before > monitor daemons. Is it a problem? No. You can also chown -R /var/lib/ceph/mon and /var/lib/ceph/osd separately. > I ask the question because, during a migration to a new release, > it's generally recommended to upgrade _all_ the monitors before > to upgrade the first osd daemon. Doing all the monitors is recommended, but not strictly required. Also note that the chown on the OSD dirs can take a very long time (hours). I suspect we should revise the recommendation to do it for the mons and not the osds... or at least give a better warning about how long it takes. (And I'm very interested in hearing what peoples' experiences are here...) Thanks! sage _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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