On Fri, May 13, 2016 at 6:39 AM, Mika c <[email protected]> wrote:
> Hi Dillaman,
> Thank you for getting back to me.
> My system is ubuntu, so I using "sudo rbd-mirror --cluster=local
> --log-file=mirror.log --debug-rbd-mirror=20/5" instead. I was read your
> reply but still confused.
For upstart systems, you can run:
# sudo touch /var/lib/ceph/rbd-mirror/{cluster-name}-{id}/done"
# sudo start ceph-rbd-mirror id={id} cluster={cluster-name}
> The image journaling is enable.
> ---------------rbd info start-------------------
> $ rbd info test
> rbd image 'test':
> size 1024 MB in 256 objects
> order 22 (4096 kB objects)
> block_name_prefix: rbd_data.853d2ae8944a
> format: 2
> features: layering, exclusive-lock, object-map, fast-diff,
> deep-flatten, journaling
> flags:
> journal: 853d2ae8944a
> mirroring state: enabled
> mirroring global id: 912e6673-6dd9-480c-bfe1-f134f79a9989
> mirroring primary: true
> ----------------rbd info end--------------------
>
>
> And logs like below, I do not seem any errors. But images never show up on
> site2.
> ----------------log start --------------------
> 2016-05-13 10:33:47.076797 7f70d0469c80 20 rbd-mirror: Mirror::run: enter
> 2016-05-13 10:33:47.076800 7f70d0469c80 20 rbd-mirror:
> ClusterWatcher::refresh_pools: enter
> 2016-05-13 10:33:47.083209 7f70d0469c80 20 rbd-mirror:
> ClusterWatcher::read_configs: pool rbd has mirroring enabled for peer uuid:
> 1add7cb3-2cee-43a3-a67c-4c5adb9d455d cluster: remote client: client.admin
> 2016-05-13 10:33:47.083229 7f70d0469c80 20 rbd-mirror:
> Mirror::update_replayers: enter
> 2016-05-13 10:33:47.083231 7f70d0469c80 20 rbd-mirror:
> Mirror::update_replayers: starting replayer for uuid:
> 1add7cb3-2cee-43a3-a67c-4c5adb9d455d cluster: remote client: client.admin
> 2016-05-13 10:33:47.083271 7f70d0469c80 20 rbd-mirror: Replayer::init:
> replaying for uuid: 1add7cb3-2cee-43a3-a67c-4c5adb9d455d cluster: remote
> client: client.admin
> 2016-05-13 10:33:47.091120 7f70d0469c80 20 rbd-mirror: Replayer::init:
> connected to uuid: 1add7cb3-2cee-43a3-a67c-4c5adb9d455d cluster: remote
> client: client.admin
> 2016-05-13 10:33:47.091178 7f70d0469c80 20 rbd-mirror:
> PoolWatcher::refresh_images: enter
> 2016-05-13 10:33:47.096067 7f707bfff700 20 rbd-mirror: Replayer::run: enter
> 2016-05-13 10:33:47.096207 7f707bfff700 20 rbd-mirror:
> Replayer::set_sources: enter
> ---------------------log end--------------------
The rbd-mirror daemon pulls the updates from a remote cluster, so make
sure (1) you start it with the local cluster name, and (2) when you
configure the peer, the name of the peer aligns to a local
/etc/ceph/<peer cluster name>.conf file which connects to the remote.
> Do I need upgrade kernel to 4.4 or higher?
There are no kernel-specific features for mirroring.
--
Jason
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