22 Sep
2020
22 Sep
'20
6:22 a.m.
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? 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