Re: Trouble booting off an md device with grub 1.99

[Vladimir 'φ-coder/phcoder' Serbinenko]

On 20.06.2012 02:57, Bernie Innocenti wrote:

> (adding bug-grub@)
> 
> Hello,
> 
> I've created an md root partition on a couple of drives and installed
> grub in the master boot record the usual way:
> 
>  mount --bind /dev  /newroot/dev
>  mount --bind /sys  /newroot/sys
>  mount --bind /proc /newroot/proc
>  chroot /newroot
>  grub-install /dev/sda
>  grub-install /dev/sdb
>  exit
>  # umount everything and reboot
> 
> After this, the machine won't boot off the new drives. It will simply
> hang with a black screen after the POST, when the grub menu would
> normally come up. It looks almost like the mbr can't locate the blocks
> to load next.
> 

Do you see "GRUB" or "Welcome to GRUB" messages?

> I also tried booting off a USB stick and using --boot-directory from the
> live distro rather than chrooting. I also tried specifying '(hd0)' and
> '(hd1)' instead of the device nodes.
> 
> This is grub_1.99-21ubuntu3.1 on Precise. The md is raid1 with metadata
> 0.90 and the filesystem is ext4 with the flex_bg and uninit_bg features.
> 

Could you try latest upstream bzr? Ubuntu decided that it's unestethic
to show progress messages and removed them making it impossible to
handle problem like yours.

> I used this trick a million times with all versions of grub and this is
> the first time I observe such behavior. Any ideas?
> 



-- 
Regards
Vladimir 'φ-coder/phcoder' Serbinenko

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