Bug #2110891 “System freeze on release upgrade 24.10 oneiric to ...” : Bugs : ubuntu-release-upgrader package : Ubuntu

DRANK

[Impact] Upgrades to 25.10 (and newer) fail as the ZFS userspace modules are newer than the kernel modules and there is some incompatibility that can cause the kernel to hang, particularly the bug observes a problem with iterating over the snapshots of the root file system freezing it. [Test plan: ubuntu-release-upgrader] 1. Create a vm 2. Check that the upgrade doesn't trigger the screen (no zpool exists) 3. Install zfsutils-linux 4. Check that the upgrade doesn't trigger the screen (...