after 23.10 to 24.04 upgrade zfs encrypted boot drive won't decrypt

Bug #2067913 reported by Michael Baker
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
zfs-linux (Ubuntu)
New
Undecided
Unassigned

Bug Description

After performing an upgrade from ubuntu-mate 23.10 to 24.04, upon final reboot, there is an error message displayed indicating rpool fails to get an encryption key (zfs key load errorl and the booting process stops. This error has been reproduced on two different laptops both upgrading from 23.10 to 24.04.

After rebooting again and selecting advanced options, if I select the 23.10 6.5 kernel and continue, booting continues and I'm able to enter the decryption passkey and system boots to login prompt as normal.

The issue seems to be confined to ZFS within the 6.8 kernel

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