Thanks.
I saw
zfs list -o space | grep cntn1
NAME AVAIL USED USEDSNAP USEDDS USEDREFRESERV
USEDCHILD
lxd/containers/cntn1 6.98G 103G 53.3G 49.7G 0B 0B
lxd/snapshots/cntn1 1.05T 590K 0B 24K 0B 566K
lxd/snapshots/cntn1/cntn1_snap 1.05T 107K 0B 107K 0B 0B
lxd/snapshots/cntn1/stable_migrate 1.05T 459K 0B 459K 0B 0B
there were snapshots a reason
zfs list | grep cntn1
NAME USED AVAIL REFER MOUNTPOINT
lxd/containers/cntn1 104G 6.46G 50.2G /var/lib/lxd/storage-
pools/lxd/containers/cntn1
lxd/snapshots/cntn1 590K 1.05T 24K /lxd/snapshots/cntn1
lxd/snapshots/cntn1/cntn1_snap 107K 1.05T 22.7G /var/lib/lxd/storage-pools/lxd/snapshots/cntn1/cntn1_snap
lxd/snapshots/cntn1/stable_migrate 459K 1.05T 41.4G /var/lib/lxd/storage-pools/lxd/snapshots/cntn1/stable_migrate
I desroyed one (REFER 22.7G) with lxc delete and zfs destroy afterwards, but available space didn’t increase.
zfs list | grep cntn1
NAME USED AVAIL REFER MOUNTPOINT
lxd/containers/cntn1 103G 6.59G 50.3G /var/lib/lxd/storage-pools/lxd/containers/cntn1
lxd/snapshots/cntn1 483K 1.05T 24K /lxd/snapshots/cntn1
lxd/snapshots/cntn1/stable_migrate 459K 1.05T 41.4G /var/lib/lxd/storage-pools/lxd/snapshots/cntn1/stable_migrate
Do you know why and how I can revert available space?
What I found, I could set root size plus 10Gb and set refresevation to 10Gb that there would add available space and I hope should freeze available space with 10Gb.