deduplication and thin provisioning are not working

[bibin]

Hi,

We have configured a zfs server with raid6 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 virual private servers. Some logs are pasted below. When we evaluate this log, we can figure out that usage is full by all virtual servres. 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 -

root@server ~]# zpool status
pool: zfspool
state: ONLINE
scan: none requested
config:

NAME STATE READ WRITE CKSUM
zfspool ONLINE 0 0 0
raidz2-0 ONLINE 0 0 0
sdb ONLINE 0 0 0
sdc ONLINE 0 0 0
sdd ONLINE 0 0 0
sde ONLINE 0 0 0
logs
sda4 ONLINE 0 0 0
cache
sda3 ONLINE 0 0 0

errors: No known data errors


Thanks !

 

[ljw1]

You may be confused as to what deduplication actually does on zfs. It is a block level deduplication and probably doesn't go across the filesystem as you have it set up.