** Also affects: zsys (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1867542
Title:
grub stuck on loading kernel, fails to ls zfs and swap partitions
Status in grub2 package in Ubuntu:
New
Status in zsys package in Ubuntu:
New
Bug description:
I did a fresh install on a test laptop of 20.04 a while back, and
after today's update, it no longer boots. Today's update included
2.31-0ubuntu6, but other 20.04 machines of mine also applied that and
didn't fail, so I can't really be sure it's the cause.
I also have zsys installed, and I noticed there are many snapshots of
my datasets, and grub has a new menu entry about history.
All that being said, I'm still troubleshooting and so far these are
the facts:
- partition layout:
Device Start End Sectors Size Type
/dev/sda1 2048 1050623 1048576 512M EFI System
/dev/sda2 1050624 5244927 4194304 2G Linux swap
/dev/sda3 5244928 9439231 4194304 2G Solaris boot
/dev/sda4 9439232 937703054 928263823 442.6G Solaris root
- grub hangs when doing an ls on (hd0,gpt2), which is swap
- grub hangs when doing an ls on (hd0,gpt4).
- zfs-info (from grub's command line) on gpt3 is happy. It identifies it as
bpool
- zfs-info on gpt4 complains it has unsupported features, but does not hang
When booting the system, it hangs right after I select a menu entry in
grub, regardless of which one. Even the history ones from zfs hang,
although I didn't try all. It looks just like the hang on the simple
ls command.
This is grub2 2.04-1ubuntu22, and zsys 0.4.1. I'll see if I can run collect
from inside the mounted system in a chroot from a rescue image, and attach info
to this log.
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ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu20
Architecture: amd64
DistroRelease: Ubuntu 20.04
InstallationDate: Installed on 2020-02-29 (15 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Alpha amd64 (20200228)
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
Package: grub2-common 2.04-1ubuntu22
PackageArchitecture: amd64
ProcVersionSignature: Ubuntu 5.4.0-14.17-generic 5.4.18
Tags: focal
Uname: Linux 5.4.0-14-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:
_MarkForUpload: True
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