I understand the snapshot part. Sorry for the confusion back to my other issue and question is for backup VZdump it took too long even running a qcow2 disk and raw disk.
WE have been using proxmox since day 1 and zfs since version pve version 5. I happen to notice qcow2 snapshot and zfs vm disk are too slow very relatively slow it took a lot of time a very very slow perform on zfs proxmox version 6 and up. is there an issue with zfs?
Current setup
System: zfs...