On 09/10/2015 01:56 PM, John Spray wrote: > On Tue, Sep 8, 2015 at 9:00 AM, Gregory Farnum <gfarnum@xxxxxxxxxx> wrote: >> On Tue, Sep 8, 2015 at 2:33 PM, Florent B <florent@xxxxxxxxxxx> wrote: >>> >>> On 09/08/2015 03:26 PM, Gregory Farnum wrote: >>>> On Fri, Sep 4, 2015 at 9:15 AM, Florent B <florent@xxxxxxxxxxx> wrote: >>>>> Hi everyone, >>>>> >>>>> I would like to know if there is a way on Debian to detect an upgrade of >>>>> ceph-fuse package, that "needs" remouting CephFS. >>>>> >>>>> When I upgrade my systems, I do a "aptitude update && aptitude >>>>> safe-upgrade". >>>>> >>>>> When ceph-fuse package is upgraded, it would be nice to remount all >>>>> CephFS points, I suppose. >>>>> >>>>> Does someone did this ? >>>> I'm not sure how this could work. It'd be nice to smoothly upgrade for >>>> users, but >>>> 1) We don't automatically restart the OSD or monitor daemons on >>>> upgrade, because users want to control how many of their processes are >>>> down at once (and the load spike of a rebooting OSD), >>>> 2) I'm not sure how you could safely/cleanly restart a process that's >>>> serving a filesystem. It's not like we can force users to stop using >>>> the cephfs mountpoint and then reopen all their files after we reboot. >>>> -Greg >>> Hi Greg, >>> >>> I understand. >>> It could be something like this : a command (or temp file) containing >>> *running* version of CephFS (per mount point, or per system). >>> Of course we can then get *installed* version of CephFS. >>> And if different, umount&mount point. >> I guess I don't see how that helps compared to just remembering when >> you upgraded the package and comparing that to the running time of the >> ceph-fuse process. > I can see the utility of being able to do this at a moment in time, > rather than having to remember state. Most orchestration tools will > make it a lot easier to implement a "compare and conditionally > restart" than a "store, upgrade, then compare and conditionally > restart". > > Anyway, I think we already provide enough hooks to do this: the client > admin socket has a "version" command (`ceph daemon > /var/run/ceph/<whatever>.asok version`). The caller just needs to > know how to compare that to a package version. > > John (needs to install ceph-common package to get "ceph" command) _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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