Re: [question] one-way RBD mirroring doesn't work

[Jason Dillaman <jdillama@xxxxxxxxxx>]

On Tue, Aug 20, 2019 at 9:23 AM V A Prabha <prabhav@xxxxxxx> wrote:

I too face the same problem as mentioned by Sat

  All the images created at the primary site are in the state : down+ unknown

  Hence in the secondary site the images is 0 % up + syncing all time ....No progress

  The only error log that is continuously hitting is

  2019-08-20 18:04:38.556908 7f7d4cba3700 -1 rbd::mirror::InstanceWatcher: C_NotifyInstanceRequest: 0x7f7d4000f650 finish: resending after timeout

This sounds like your rbd-mirror daemon cannot contact all OSDs. Double check your network connectivity and firewall to ensure that rbd-mirror daemon can connect to *both* Ceph clusters (local and remote).

 

 

  The setup is as follows

   One OSD created in the primary site with cluster name [site-a] and one OSD created in the secondary site with cluster name [site-b] both have the same ceph.conf file

   RBD mirror is installed at the secondary site [ which is 300kms away from the primary site]

   We are trying to merge this with our Cloud but the cinder volume fails syncing everytime

  Primary Site Output

    root@clouddr:/etc/ceph# rbd mirror pool status volumesnew --verbose
    health: WARNING
    images: 4 total
    4 unknown
    boss123:
     global_id:   7285ed6d-46f4-4345-b597-d24911a110f8
     state:       down+unknown
     description: status not found
     last_update:
     new123:
     global_id:   e9f2dd7e-b0ac-4138-bce5-318b40e9119e
     state:       down+unknown
     description: status not found
     last_update:

 

root@clouddr:/etc/ceph# rbd mirror pool info volumesnew
Mode: pool
Peers: none
root@clouddr:/etc/ceph# rbd mirror pool status volumesnew
health: WARNING
images: 4 total
    4 unknown

Secondary Site

root@meghdootctr:~# rbd mirror image status volumesnew/boss123
boss123:
  global_id:   7285ed6d-46f4-4345-b597-d24911a110f8
  state:       up+syncing
  description: bootstrapping, IMAGE_COPY/COPY_OBJECT 0%
  last_update: 2019-08-20 17:24:18

Please help me to identify where do I miss something

 

Regards

V.A.Prabha

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Jason

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