[PVE-User] zfs: cannot import rpool after reboot

[Dreyer, Jan, SCM-IT]

Hi,

after upgrading my Debian (and proxmox) to stretch (PVE 5.2), I got into trouble when rebooting my servers. It’s similar to https://forum.proxmox.com/threads/zfs-cannot-import-rpool-after-reboot.37611/page-2 <https://forum.proxmox.com/threads/zfs-cannot-import-rpool-after-reboot.37611/page-2> beside that a manual import does _not_ work.
When booting with the old kernel (4.4.128-1-pve) the machine comes up, but has no access to it’s (zfs-based) swap device.
I already tried to boot from the most recent 4.10, which seems to hang in a CPU-stalled loop for > 5 minutes.
„zdb" shows me the configured pools, so basically they are available.
As a workaround I set the 4.4-kernel as default for booting, but of course I want to upgrade. Does anyone has a hint on how to do it?

Regards
—
Jan Dreyer
IT Administrator — Operations — A-SCM-IT IOX Expert
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