ceph replication with rbd-mirror - high disk space usage

spark 5

Active Member
Sep 19, 2018
24
3
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hi,
i need some help, cause i did not found any solutions (or may be to blind).
we have a proxmox 6.x cluster with ceph and 38tb data.
now, we setup a backup cluster and configured rbd-mirror, journaling mode.

everthing works fine and after we enabled journaling, the replication started.
but after that, the space usage on the ceph cluster starts growing.
the journaling eats up 5tb in 10 days.

now, we disabled the journaling and the free space came back.

did we do something wrong?
is it possible to limit the size of the journaling?
we use almost kvm images.

proxmox 6.4-13
ceph 14.2.22

thanks for help and kind regards,
ronny
 

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