Hello List,
when i initially enable journal/mirror on an image it gets
bootstrapped to my site-b pretty quickly with 250MB/sec which is about
the IO Write limit.
Once its up2date, the replay is very slow. About 15KB/sec and the
entries_behind_maste is just running away:
root@ceph01:~# rbd --cluster backup mirror pool status rbd-cluster6 --verbose
health: OK
images: 3 total
3 replaying
...
vm-112-disk-0:
global_id: 60a795c3-9f5d-4be3-b9bd-3df971e531fa
state: up+replaying
description: replaying, master_position=[object_number=623,
tag_tid=3, entry_tid=345567], mirror_position=[object_number=35,
tag_tid=3, entry_tid=18371], entries_behind_master=327196
last_update: 2020-03-10 11:36:44
...
Write traffic on the source is about 20/25MB/sec.
On the Source i run 14.2.6 and on the destination 12.2.13.
Any idea why the replaying is sooo slow?
Thanks,
Michael
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