7-5-4.md

####7.5.5 开启mirror模式

主备集群中都执行

开启集群pool备份模式

rbd mirror pool enable <pool-name> <mode>

对rbd存储池启动image模式的mirror配置

rbd mirror pool enable rbd pool

开启集群image备份模式

rbd mirror image enable <pool-name>/<image>

这里开启具体的image mirror

[root@ansible-0 ~]# rbd mirror image enable rbd/image-1
Mirroring enabled

查询镜像的状态

[root@ansible-0 ~]# rbd info rbd/image-1
rbd image 'image-1':
	size 1024 MB in 256 objects
	order 22 (4096 kB objects)
	block_name_prefix: rbd_data.108b238e1f29
	format: 2
	features: exclusive-lock, journaling
	flags:
	journal: 108b238e1f29
	mirroring state: enabled
	mirroring global id: c603d9dc-6f8d-49e0-ab68-5944d348e527
	mirroring primary: true

查看镜像同步

查看镜像同步的状态

[root@ansible-0 ~]# rbd mirror image status rbd/image-1 --cluster remote
image-1:
  global_id:   c603d9dc-6f8d-49e0-ab68-5944d348e527
  state:       up+replaying
  description: replaying, master_position=[object_number=3, tag_tid=1, entry_tid=3], mirror_position=[object_number=3, tag_tid=1, entry_tid=3], entries_behind_master=0
  last_update: 2017-06-05 17:00:41

syncing表示正在同步，同步完成后状态为replaying

检查数据是否同步，在备上查看

[root@ceph0 ~]# rbd info rbd/image-1
rbd image 'image-1':
	size 1024 MB in 256 objects
	order 22 (4096 kB objects)
	block_name_prefix: rbd_data.106b12200854
	format: 2
	features: exclusive-lock, journaling
	flags:
	journal: 106b12200854
	mirroring state: enabled
	mirroring global id: c603d9dc-6f8d-49e0-ab68-5944d348e527
	mirroring primary: false

说明已经同步了