On Fri, Jul 24, 2020 at 3:22 PM <yveskretzschmar@web.de> wrote:
Hi Jason,
now I'm a bit confused ...
I recreated the peers again with names clear:
#main site: rbd mirror pool info testpool Mode: image Site Name: master Peer Sites: UUID: e7443ebd-b9e2-47ab-bcfe-f40cb75a6294 Name: backup Mirror UUID: e0d03424-1913-4e0b-90dd-61defabae51a Direction: tx-only
#backup site: rbd --cluster backup mirror pool info testpool Mode: image Site Name: backup Peer Sites: UUID: a7ffac0b-09e3-427c-a3a1-5f001a55dcf1 Name: master Mirror UUID: Direction: rx-tx Client: client.admin
In my opinion this looks ok, but the error seems the same:
2020-07-24T21:14:21.559+0200 7fb9d709a700 -1 rbd::mirror::image_replayer::snapshot::Replayer: 0x56122bb43800 init: failed to retrieve mirror peer uuid from remote pool 2020-07-24T21:14:21.559+0200 7fb9e28b1700 -1 rbd::mirror::image_replayer::snapshot::Replayer: 0x56122bb43800 get_replay_status: replay not running 2020-07-24T21:14:22.515+0200 7fb9e28b1700 5 rbd::mirror::Instances: 0x56122af49d40 handle_acked: instance_ids=[10464751] 2020-07-24T21:14:27.519+0200 7fb9e28b1700 5 rbd::mirror::Instances: 0x56122af49d40 handle_acked: instance_ids=[10464751] 2020-07-24T21:14:31.559+0200 7fb9e28b1700 -1 rbd::mirror::image_replayer::snapshot::Replayer: 0x56122bb43800 get_replay_status: replay not running 2020-07-24T21:14:32.519+0200 7fb9e28b1700 5 rbd::mirror::Instances: 0x56122af49d40 handle_acked: instance_ids=[10464751]
Turn your rbd-mirror debug level up from 5 to at least 10 and retry. Every 30 seconds or so there should be a log message from the "RemotePoolPoller" which is responsible for pulling the mirror peer uuid from the remote cluster.
If I disable mirroring on the testimage on main site, the mirror daemon tells me:
2020-07-24T21:15:58.775+0200 7f3cd6f3b700 -1 rbd::mirror::image_replayer::snapshot::Replayer: 0x55fbad17c800 handle_unregister_remote_update_watcher: failed to unregister remote update watcher: (2) No such file or directory 2020-07-24T21:15:58.775+0200 7f3cd6f3b700 -1 rbd::mirror::image_replayer::snapshot::Replayer: 0x55fbad17c800 handle_unregister_local_update_watcher: failed to unregister local update watcher: (2) No such file or directory
The created image on the backup site doesn't get removed.
Journal based mirroring works without any problem on the same image.
Thanks for any hints Yves
-----Ursprüngliche Nachricht----- Betreff: Re: Re: [ceph-users] Re: journal based mirroring works but snapshot based not
You need to have unique names for your site -- so "ceph" is not an appropriate name. Right now, your backup set is named "ceph" and you have a peer named "ceph".
On Fri, Jul 24, 2020 at 8:43 AM Yves wrote:
Runing "rbd mirror pool peer set testpool 0622b647-2c24-4840-93d0-efdee180ab15 site-name backup" get's me: 2020-07-24T14:07:57.205+0200 7fc414af53c0 -1 librbd::api::Mirror: peer_site_set_name: failed to update site '0622b647-2c24-4840-93d0-efdee180ab15': (17) File exists
So I deleted peers again and recreated with same site-name.
On main site it looks this way: rbd mirror pool info testpool Mode: image Site Name: ceph Peer Sites: UUID: e68b09de-1d2c-4ec6-9350-a6ccad26e1b7 Name: ceph Mirror UUID: 4d7f87f4-47be-46dd-85f1-79caa3fa23da Direction: tx-only
On backup site: rbd --cluster backup mirror pool info testpool Mode: image Site Name: ceph Peer Sites: UUID: 399e902c-deee-498c-bcdc-1c4f7a59433a Name: ceph Mirror UUID: Direction: rx-tx Client: client.admin
But situation didn't change.
Gesendet: Freitag, 24. Juli 2020 um 14:04 Uhr Von: "Jason Dillaman" Cc: "ceph-users" <ceph-users@ceph.io>
Hi,
this is the main site:
rbd mirror pool info testpool Mode: image Site Name: ceph
Peer Sites:
UUID: 1f1877cb-5753-4a0e-8b8c-5e5547c0619e Name: backup Mirror UUID: e9e2c4a0-1900-4db6-b828-e655be5ed9d8 Direction: tx-only
and the backup site:
rbd --cluster backup mirror pool info testpool Mode: image Site Name: backup
Peer Sites:
UUID: 0622b647-2c24-4840-93d0-efdee180ab15 Name: ceph Direction: rx-only Client: client.rbd-mirror-peer
At the backup site, run "rbd mirror pool peer set testpool 0622b647-2c24-4840-93d0-efdee180ab15 site-name backup" to update the site-name to match.
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-- Jason
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-- Jason