Are you using rgw? There are certain compatibility issues that you might hit if you run mixed versions. Yehuda On Tue, Dec 5, 2017 at 3:20 PM, Wido den Hollander <wido@xxxxxxxx> wrote: > Hi, > > I haven't tried this before but I expect it to work, but I wanted to check before proceeding. > > I have a Ceph cluster which is running with manually formatted FileStore XFS disks, Jewel, sysvinit and Ubuntu 14.04. > > I would like to upgrade this system to Luminous, but since I have to re-install all servers and re-format all disks I'd like to move it to BlueStore at the same time. > > This system however has 768 3TB disks and has a utilization of about 60%. You can guess, it will take a long time before all the backfills complete. > > The idea is to take a machine down, wipe all disks, re-install it with Ubuntu 16.04 and Luminous and re-format the disks with BlueStore. > > The OSDs get back, start to backfill and we wait. > > My estimation is that we can do one machine per day, but we have 48 machines to do. Realistically this will take ~60 days to complete. > > Afaik running Jewel (10.2.10) mixed with Luminous (12.2.2) should work just fine I wanted to check if there are any caveats I don't know about. > > I'll upgrade the MONs to Luminous first before starting to upgrade the OSDs. Between each machine I'll wait for a HEALTH_OK before proceeding allowing the MONs to trim their datastore. > > The question is: Does it hurt to run Jewel and Luminous mixed for ~60 days? > > I think it won't, but I wanted to double-check. > > Wido > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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