22 Sep
2020
22 Sep
'20
7:45 a.m.
On Tue, Sep 22, 2020 at 7:23 AM Eugen Block <eblock@nde.ag> wrote: > > It just hit me when I pushed the "send" button: the (automatically > created) first snapshot initiates the first full sync to catch up on > the remote site, but from then it's either a manual process or the > snapshot schedule. Is that it? Indeed. You will get implicit mirroring snapshots created whenever you enable/promote/demote. You can see the snapshots by using "rbd snap ls --all <image-spec>" (since normally only user-created snapshots are shown). Besides the implicit mirror snapshot actions above, you will now need to explicitly create a mirror snapshot via "rbd mirror image snapshot" or via the mirror snapshot schedule in order to transfer any image deltas. > Zitat von Eugen Block <eblock@nde.ag>: > > > Hi *, > > > > I encountered a rather strange (or at least unexpected) behaviour of > > the rbd-mirror. Maybe I don't fully understand the feature so please > > correct me if my assumptions are wrong. > > > > My two (virtual one-node) clusters are still on ceph version > > 15.2.4-864-g0f510cb110 and the following happens if I'm trying to > > configure snapshot-based rbd-mirroring: > > > > - I create a one-way replication from site A to site B > > - Mirror mode is image (for snapshot-based mirroring) > > - Import image on site A (no journal-feature enabled to make sure) > > - Image is replicated as soon as I enable the mirror mode on that image with: > >> rbd mirror image enable pool/image3 snapshot > > - rbd info shows "snapshot_count: 1" although I haven't created a > > snapshot of this image yet, and there's also no schedule: > > > >> siteA:~ # rbd mirror snapshot schedule ls > >> siteA:~ # > > > > This is the third image in this test, I only created one snapshot > > for image1, not for the other images. Is this expected? From the > > docs I assumed I have to either create snapshots manually or > > configure the rbd mirror snapshot schedule. Could anyone please > > clarify? > > > > Thank you! > > Eugen > > > _______________________________________________ > ceph-users mailing list -- ceph-users@ceph.io > To unsubscribe send an email to ceph-users-leave@ceph.io > -- Jason