22 Sep
2020
22 Sep
'20
7:49 a.m.
Thank you, Jason. As usual you're very helpful. :-) Zitat von Jason Dillaman <jdillama@redhat.com>: > 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