grub doesn't properly migrate from incorrectly-detected-as-evms root filesystems
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
grub (Ubuntu) |
Fix Released
|
High
|
Colin Watson |
Bug Description
Binary package hint: mdadm
Upgrading to the beta has near-bricked my IBM X40 laptop :-( Note that my machine has a single, 40GB disk, and I've never asked for or used RAID of any sort.
A straight boot puts up the splash screen; the progress bar gets 2px in and hangs. Ctrl-Alt-F1 shows:
Loading, please wait...
libgcc_s.so.1 must be installed for pthread_cancel to work
Apr 02 22:53:59 (none) _0_ Engine: signal_handler: ***
Apr 02 22:53:59 (none) _0_ Engine: signal_handler: *** Signal: Aborted
Apr 02 22:53:59 (none) _0_ Engine: signal_handler: ***
Aborted
mdadm: No devices listed in conf file were found.
From reading various bugs, I learnt about using the "break=mount" boot option. That gets me to a (initramfs) prompt.
(initramfs) cat /etc/mdadm/
DEVICE partitions
(initramfs) ./scripts/
mdadm: No arrays found in config file or automatically
(initramfs) ./scripts/
beginning: Loading MD modules
success: loaded module linear.
success: loaded module multipath.
success: loaded module raid0.
success: loaded module raid1.
success: loaded module raid456.
success: loaded module raid5.
success: loaded module raid6.
success: loaded module raid10.
done.
beginning: Assembling all MD arrays
mdadm: No arrays found in config file or automatically
./scripts/
(initramfs) lvm vgscan
No volume groups found
That's just a random selection of commands I've found from the several bugs which seem to be related. None of the "magic solutions" other people propose seem to work; they all seem to have non-working ancillary RAID arrays, whereas it's my single, only, root drive which won't mount.
I'm hamstrung a bit because busybox doesn't seem to come with an editor.
According to bug 75681, something has very recently fixed in this area - so if I could boot once, I could perhaps do an apt-get to find the upgraded packages. But I can't boot even once!
My laptop is hosed. Please help :-(
Gerv
Related branches
Changed in grub: | |
importance: | Undecided → High |
Changed in grub: | |
status: | Confirmed → Fix Committed |
Subscribing a couple of people who were involved in the related bugs. I hope that's not impolite...
Gerv