Ubuntu
grub2 package

Grub update fails on zfs root drives after software install..

Bug #1870810 reported by Jeff Hoffman
8
This bug affects 1 person
Affects Status Importance Assigned to Milestone
grub2 (Ubuntu)
Incomplete
High
Jean-Baptiste Lallement
Ubuntu ubuntu-20.04

Bug Description

My grub.cfg file first menu entry works. Used to refer to specific hard drives which will not work with ZFS root devices.

It also loops and adds another "}" at line 183.

Memtest again refers to /dev/sd<x> which I don't think will work with ZFS filesystems?

See the two files attached.

grub.cfg I modified to make it work to see first menu entry or linux*88 menu entry.

The second one is the generated grub.cfg.new which is bad.

ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: ubuntu-release-upgrader-core 1:19.10.15.4
ProcVersionSignature: Ubuntu 5.3.0-45.37-generic 5.3.18
Uname: Linux 5.3.0-45-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu8.8
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: ubuntu:GNOME
Date: Sat Apr 4 10:39:58 2020
InstallationDate: Installed on 2017-05-20 (1049 days ago)
InstallationMedia: Ubuntu-GNOME 17.04 "Zesty Zapus" - Release amd64 (20170412)
PackageArchitecture: all
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: ubuntu-release-upgrader
Symptom: ubuntu-release-upgrader
UpgradeStatus: Upgraded to eoan on 2020-03-30 (4 days ago)
VarLogDistupgradeTermlog:

Revision history for this message
Jeff Hoffman (jcmj) wrote :
Jean-Baptiste Lallement (jibel)
affects: ubuntu-release-upgrader (Ubuntu) → grub2 (Ubuntu)
Changed in grub2 (Ubuntu):
importance: Undecided → High
status: New → Confirmed
assignee: nobody → Jean-Baptiste Lallement (jibel)
Revision history for this message
Jean-Baptiste Lallement (jibel) wrote :

grub.new untar-ed from attachments.

Changed in grub2 (Ubuntu Focal):
status: Confirmed → Triaged
Jean-Baptiste Lallement (jibel)
Changed in grub2 (Ubuntu Focal):
milestone: none → ubuntu-20.04
Revision history for this message
Jean-Baptiste Lallement (jibel) wrote :

Could you provide the output of the following commands:
lsblk -f
zfs list
zfs list -t snapshot

Thanks

Changed in grub2 (Ubuntu Focal):
status: Triaged → Incomplete
Revision history for this message
Jeff Hoffman (jcmj) wrote :

See attached file

Revision history for this message
Jean-Baptiste Lallement (jibel) wrote :

Thanks for the logs.

The curly brace error should be fixed now. Now we must understand why it doesn't find the kernels.

- Could you please save /etc/grub.d/10_linux_zfs somewhere outside of /etc/grub.d/
- Replace /etc/grub.d/10_linux_zfs by the file in attachment. It adds set -x to watch its execution and the content of intermediary files to generate the menu.
- Make it executable:
   chmod +x /etc/grub.d/10_linux_zfs
- Then run update-grub:
   sudo update-grub 2>/tmp/update-grub.log

Verify that the log contains something and attach it to this report.

Revision history for this message
Jeff Hoffman (jcmj) wrote :

Output after update

Julian Andres Klode (juliank)
no longer affects: grub2 (Ubuntu Focal)
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