Thanks for the logs
The error happens in grub-mkconfig. So much earlier than any zfs
specific grub script.
One of the main issue on your system that could lead to this error is
the corrupted rpool.
NAME STATE READ WRITE CKSUM
rpool DEGRADED 0 0 0
nvme0n1p4 DEGRADED 0 0 32 too many errors
You should start by fixing it and see if it fixes the problem.
Then bpool is not mounted.
There is something that does automated snapshots which duplicate the automated
snapshot feature of zsys.
docker + zfs creates a lot of dataset which may lead to timeouts in zsys.
Please start by fixing rpool and see if it improves the situation.
** Changed in: zsys (Ubuntu)
Status: Confirmed => Incomplete
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https://bugs.launchpad.net/bugs/1874304
Title:
grub-probe fails with failed to get canonical path of rpool with ZFS
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