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 > <mailto: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 <mailto: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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