Deduplication and thin provisioning are not working

[bibin]

Hi,

We have configured a zfs server with raidz2 and enabled deduplication,compression and thin provisioning features on it. Then we created virtual servers on it. But deduplication and thin provisioning are not working on those virtual private servers. Some logs are pasted below. When we evaluate this log, we can figure out that usage is full by all virtual servers. Kindly provide us some valid suggestions about this issue.



[root@server ~]# zfs list
NAME USED AVAIL REFER MOUNTPOINT
zfspool 440G 1.32T 25.4K /zfspool
zfspool/vsv1077-0av0-aqhtlhqpjcg4nkad 104G 1.32T 104G -
zfspool/vsv1078-06km-djh3c8mbimocnp5e 106G 1.32T 106G -
zfspool/vsv1080-0py3-tbamyuog0dl4qvgn 106G 1.32T 106G -
zfspool/vsv1081-0zjb-0fwuhprrv4m743k4 106G 1.32T 106G -

Thanks !

 

[vrod]

Have you tried zpool list? Should show you the dedup and comp ratio

 

[T_Minus]

Was the pool empty then the vms created onto the pool?

I believe dedup occurs 'as you go' and not on currently utilized space.

 

[vrod]

Correct, any existing data would have to be moved away from the volume, then back to the volume in order for dedup to work