On Tue, Mar 12, 2019 at 11:09 PM Vikas Rana <vr...@vtiersys.com> wrote:
>
> Hi there,
>
>
>
> We are replicating a RBD image from Primary to DR site using RBD mirroring.
>
> On Primary, we were using 10.2.10.

Just a note that Jewel is end-of-life upstream.

> DR site is luminous and we promoted the DR copy to test the failure. 
> Everything checked out good.
>
>
>
> Now we are trying to restart the replication and we did the demote and then 
> resync the image but it stuck in “starting_replay” state for last 3 days. 
> It’s a 200TB RBD image

You would need to run "rbd --cluster <primary-site> mirror image
resync nfs/dir_research" and wait for that to complete *before*
demoting the primary image on cluster "cephdr". Without a primary
image, there is nothing to resync against.

>
>
> :~# rbd --cluster cephdr mirror pool status nfs --verbose
>
> health: WARNING
>
> images: 1 total
>
>     1 starting_replay
>
>
>
> dir_research:
>
>   global_id:   3ad67d0c-e06b-406a-9469-4e5faedd09a4
>
>   state:       down+unknown
>
>   description: status not found
>
>   last_update:
>
>
>
>
>
> #rbd info nfs/dir_research
>
> rbd image 'dir_research':
>
>         size 200TiB in 52428800 objects
>
>         order 22 (4MiB objects)
>
>         block_name_prefix: rbd_data.652186b8b4567
>
>         format: 2
>
>         features: layering, exclusive-lock, journaling
>
>         flags:
>
>         create_timestamp: Thu Feb  7 11:53:36 2019
>
>         journal: 652186b8b4567
>
>         mirroring state: disabling
>
>         mirroring global id: 3ad67d0c-e06b-406a-9469-4e5faedd09a4
>
>         mirroring primary: false
>
>
> So the question is, how do we know the progress of the replay and how much 
> its already completed and any ETA estimation on when it will go back to OK 
> state?
>
>
>
>
> Thanks,
>
> -Vikas
>
>
>
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--
Jason
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