Better error handling #14
Description
After some backups one script execution (started headless with devd) failed due to running out of disk space on my usb drive.
This is ok and zfs has handled this correctly as some snapshots were copied and the one which does not fit on the disk has not started; no partial files, no mess 👍🏼
The downside is that the script fails and there is no process of cleaning up changes. The zfs pool was not exported at all and in a bad state. I had to restart the NAS because of this.
There should be a cleanup function to prevent leaving the system in such a state.