You can update the server with the mapped rbd and shouldn't see as much as a blip on your VMs.
On Tue, Sep 26, 2017, 3:32 AM Götz Reinicke <goetz.reini...@filmakademie.de> wrote: > Hi Thanks David & David, > > we don’t use the fuse code. And may be I was a bit unclear, but your > feedback clears some other aspects in that context. > > I did an update already on our OSD/MONs while a NFS Fileserver still had a > rbd connected and was exporting files (Virtual disks for XEN server) online. > > Now the question is, can I update the ceph packages on the NFS Fileserver > while the export (and VM Images) are online? Or should I shutdown the VMs > and unmount the NFS export …? > > Lots of nuts and bolts, but I like to screw …. :) > > Cheers . Götz > > > Am 25.09.2017 um 17:05 schrieb David Turner <drakonst...@gmail.com>: > > It depends a bit on how you have the RBDs mapped. If you're mapping them > using krbd, then they don't need to be updated to use the new rbd-fuse or > rbd-nbd code. If you're using one of the latter, then you should schedule > a time to restart the mounts so that they're mapped with the new Ceph > version. > > In general RBDs are not affected by upgrades as long as you don't take > down too much of the cluster at once and are properly doing a rolling > upgrade. > > On Mon, Sep 25, 2017 at 8:07 AM David <dclistsli...@gmail.com> wrote: > >> Hi Götz >> >> If you did a rolling upgrade, RBD clients shouldn't have experienced >> interrupted IO and therefor IO to NFS exports shouldn't have been affected. >> However, in the past when using kernel NFS over kernel RBD, I did have some >> lockups when OSDs went down in the cluster so that's something to watch out >> for. >> >> >> On Mon, Sep 25, 2017 at 8:38 AM, Götz Reinicke < >> goetz.reini...@filmakademie.de> wrote: >> >>> Hi, >>> >>> I updated our ceph OSD/MON Nodes from 10.2.7 to 10.2.9 and everything >>> looks good so far. >>> >>> Now I was wondering (as I may have forgotten how this works) what will >>> happen to a NFS server which has the nfs shares on a ceph rbd ? Will the >>> update interrupt any access to the NFS share or is it that smooth that e.g. >>> clients accessing the NFS share will not notice? >>> >>> Thanks for some lecture on managing ceph and regards . Götz >> >> > <…> > >
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