cannot delete subvol of lxc

[macgro1]

hi guys,
i have moved a vol of a lxc (working good) to larger disk.
i still have subvol-10*-disc-0 (the good target) but also subvol-10*-disc-1 which is taking too much space.
on ZFS when i enter to subvol-10*-disc-0 all is good but the subvol-10*-disc-1 is empty.
I can't remove the subvol-10*-disc-1
after the reboot, still there.
where shall i look for the mounts from old process?
etc/pve/lxc/10*.conf shows:
rootfs: bkpool:subvol-10*-disk-0,size=38 ]
thanks, cheers.

 

[macgro1]

zfs list bkpool/subvol-10*-disk-1
NAME USED AVAIL REFER MOUNTPOINT
bkpool/subvol-10*-disk-1 96K 846G 96K /bkpool/subvol-10*-disk-1

while
zfs list bkpool/subvol-10*-disk-0
NAME USED AVAIL REFER MOUNTPOINT
bkpool/subvol-10*-disk-0 3.33T 442G 3.33T /bkpool/subvol-10*-disk-0

i have mounted the bkpool/subvol-104-disc-1
df doesn't show this volume.

pvesm remove bkpool:subvol-104-disk-1
400 Parameter verification failed.
storage: invalid format - storage ID 'bkpool:subvol-104-disk-1' contains illegal characters
whats next?

 

[macgro1]

maybe it's lesson for more people:
- umount the faulty one.
- pvesm remove bkpool subvol-104-disk-1 (faulty)
- zfs destroy bkpool/subvol-104-disk-1 (faulty)