[Bug 1229438] Re: update-grub fails with multi-device btrfs root filesystem

[Tv]

Alright, I restored the second hard drive, here's what happens when not
degraded:

tv at btraid:~$ sudo update-grub
[sudo] password for tv: 
Generating grub.cfg ...
/usr/sbin/grub-probe: error: cannot find a GRUB drive for /dev/sda6
/dev/sdb6.  Check your device.map.
Found linux image: /boot/vmlinuz-3.8.0-19-generic
Found initrd image: /boot/initrd.img-3.8.0-19-generic
/usr/sbin/grub-probe: warning: Couldn't find physical volume `(null)'. Some modules may be missing from core image..
/usr/sbin/grub-probe: warning: Couldn't find physical volume `(null)'. Some modules may be missing from core image..
/usr/sbin/grub-probe: warning: Couldn't find physical volume `(null)'. Some modules may be missing from core image..
/usr/sbin/grub-probe: error: cannot find a GRUB drive for /dev/sda6
/dev/sdb6.  Check your device.map.
/usr/sbin/grub-probe: warning: Couldn't find physical volume `(null)'. Some modules may be missing from core image..
/usr/sbin/grub-probe: warning: Couldn't find physical volume `(null)'. Some modules may be missing from core image..
/usr/sbin/grub-probe: warning: Couldn't find physical volume `(null)'. Some modules may be missing from core image..
Found memtest86+ image: /memtest86+.bin
done
tv at btraid:~$ sudo btrfs filesystem show
Label: 'btraid'  uuid: a77a5af6-21c1-4469-8db5-1d166087a3b3
	Total devices 2 FS bytes used 882.72MB
	devid    2 size 18.13GB used 3.28GB path /dev/sdb6
	devid    1 size 18.13GB used 3.29GB path /dev/sda6

Btrfs v0.20-rc1
tv at btraid:~$ 


** Summary changed:

- update-grub fails with multi-device btrfs root filesystem
+ update-grub fails with degraded multi-device btrfs root filesystem

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to grub2 in Ubuntu.
https://bugs.launchpad.net/bugs/1229438

Title:
  update-grub fails with degraded multi-device btrfs root filesystem

Status in “grub2” package in Ubuntu:
  New

Bug description:
  Here's what happens:

  $ sudo update-grub
  /usr/sbin/grub-probe: error: failed to get canonical path of .

  Reading the shell scripts, this is grub-mkconfig running "/usr/sbin
  /grub-probe --target=device /".

  Root filesystem is a (currently degraded) multi-device btrfs:

  /dev/sda6 on / type btrfs (rw,degraded,subvol=@)

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: grub-common 2.00-13ubuntu3
  ProcVersionSignature: Ubuntu 3.8.0-19.29-generic 3.8.8
  Uname: Linux 3.8.0-19-generic x86_64
  ApportVersion: 2.9.2-0ubuntu8
  Architecture: amd64
  Date: Mon Sep 23 14:50:20 2013
  InstallationDate: Installed on 2013-09-23 (0 days ago)
  InstallationMedia: Ubuntu-Server 13.04 "Raring Ringtail" - Release amd64 (20130423.1)
  MarkForUpload: True
  ProcEnviron:
   SHELL=/bin/bash
   TERM=linux
   PATH=(custom, no user)
   LANG=en_US.UTF-8
  SourcePackage: grub2
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1229438/+subscriptions