Hi there,
We are replicating a RBD image from Primary to DR site using RBD mirroring.
We were using 10.2.10.
We decided to upgrade the DR site to luminous and upgrade went fine and
mirroring status also was good.
We then promoted the DR copy to test the failure. Everything checked out
good.
The issue now is, we are not able to resume our replication. Its
complaining about "description: remote image does not exist"
This was the same image which were in mirroring relationship before the
promotion.
We compared the mirroring global id and they are not matching. When we did
the testing in lab, this value is same on both side.
rbd info nfs/dir_research
rbd image 'dir_research':
size 200 TB in 52428800 objects
order 22 (4096 kB objects)
block_name_prefix: rbd_data.edd65238e1f29
format: 2
features: layering, exclusive-lock, journaling
flags:
journal: edd65238e1f29
mirroring state: enabled
mirroring global id: a8522ed7-70ff-4966-9edc-e7ef41906fd9
mirroring primary: true
rbd --cluster cephdr info nfs/dir_research
rbd image 'dir_research':
size 200TiB in 52428800 objects
order 22 (4MiB objects)
block_name_prefix: rbd_data.58e76109cf92e
format: 2
features: layering, exclusive-lock, journaling
flags:
journal: 58e76109cf92e
mirroring state: enabled
mirroring global id: 1490c637-21f9-4eff-bef6-54defc1e0988
mirroring primary: false
rbd mirror image status nfs/dir_research
dir_research:
global_id: a8522ed7-70ff-4966-9edc-e7ef41906fd9
state: down+unknown
description: status not found
last_update: 1969-12-31 19:00:00
rbd --cluster cephdr mirror image status nfs/dir_research
dir_research:
global_id: 1490c637-21f9-4eff-bef6-54defc1e0988
state: down+error
description: remote image does not exist
last_update: 2018-11-30 11:28:49
So the question is, Is it possible the mirroring global id got changed
after upgrade and is there's any way to change the global id to match the
production so that the replication can be resumed.
Thanks,
-Vikas
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