Really appreciate this script/plugin.   I seem to get random snapshot failures - usually only a single VM out of many and not always the same one.  Around 50% of backup runs I get no failures at all.  That being the case I suspect that if the script were to retry taking the snapshot after a short delay, it would probably work?  Not sure if this is related to me using ZFS for VM storage. 2020-05-21 06:02:14 information: able to perform snapshot for disk /mnt/zfspool/vm/vmname/vdisk1