Re: md boot failure

[Vladimir 'φ-coder/phcoder' Serbinenko]

On 13.04.2012 01:53, Tim Johnston wrote:
>
> I'm trying to copy an existing system on a new md array. But I can't
> get the system to boot off the new disks. Ubuntu Natty. I have Kubuntu
> CD, I boot off that, reinstall mdadm, then:
Please use GRUB from HEAD for mdraid.
>
>
>> sudo -i
>> mdadm --assemble /dev/md0 /dev/sda1 /dev/sdb1
>> mdadm --assemble /dev/md1 /dev/sda5 /dev/sdb5
>> mdadm --assemble /dev/md2 /dev/sda6 /dev/sdb6
>> mdadm --assemble /dev/md3 /dev/sda7 /dev/sdb7
>> mkdir /md0
>> mount /dev/md0 /md0
>> mount /dev/md1 /md0/var
>> mount /dev/md3 /md0/home
>> mount -o bind /dev /md0/dev
>> mount -t proc  none /md0/proc
>> mount -t sysfs none /md0/sys
>> chroot /md0
>
> Then try to reinstall grub
>
> #aptitude reinstall grub-pc :
>
>> Setting up grub-common (1.99~rc1-13ubuntu3) ...
>> invoke-rc.d: ----------------------------------------------------
>> invoke-rc.d: WARNING: invoke-rc.d called during shutdown sequence
>> invoke-rc.d: enabling safe mode: initscript policy layer disabled
>> invoke-rc.d: ----------------------------------------------------
>> Setting up grub-pc (1.99~rc1-13ubuntu3) ...
>>
>> Creating config file /etc/default/grub with new version
>> /usr/sbin/grub-probe: error: no such disk.
>> Auto-detection of a filesystem of /dev/md0 failed.
>> Please report this together with the output of "/usr/sbin/grub-probe
>> --device-map="/boot/grub/device.map" --target=fs -v /boot/grub" to
>> <address@hidden>
>> /usr/sbin/grub-probe: error: no such disk.
>> Auto-detection of a filesystem of /dev/md0 failed.
>> Please report this together with the output of "/usr/sbin/grub-probe
>> --device-map="/boot/grub/device.map" --target=fs -v /boot/grub" to
>> <address@hidden>
>> /usr/sbin/grub-probe: error: no such disk.
>> Auto-detection of a filesystem of /dev/md0 failed.
>> Please report this together with the output of "/usr/sbin/grub-probe
>> --device-map="/boot/grub/device.map" --target=fs -v /boot/grub" to
>> <address@hidden>
>> /usr/sbin/grub-probe: error: no such disk.
>> Auto-detection of a filesystem of /dev/md0 failed.
>> Please report this together with the output of "/usr/sbin/grub-probe
>> --device-map="/boot/grub/device.map" --target=fs -v /boot/grub" to
>> <address@hidden>
>> /usr/sbin/grub-probe: error: no such disk.
>> Auto-detection of a filesystem of /dev/md0 failed.
>> Please report this together with the output of "/usr/sbin/grub-probe
>> --device-map="/boot/grub/device.map" --target=fs -v /boot/grub" to
>> <address@hidden>
>> /usr/sbin/grub-probe: error: no such disk.
>> Auto-detection of a filesystem of /dev/md0 failed.
>> Please report this together with the output of "/usr/sbin/grub-probe
>> --device-map="/boot/grub/device.map" --target=fs -v /boot/grub" to
>> <address@hidden>
>> /usr/sbin/grub-probe: error: no such disk.
>> Auto-detection of a filesystem of /dev/md0 failed.
>> Please report this together with the output of "/usr/sbin/grub-probe
>> --device-map="/boot/grub/device.map" --target=fs -v /boot/grub" to
>> <address@hidden>
>> Setting up grub-gfxpayload-lists (0.2) ...
>> Press return to continue.
>>
>
>
> # /usr/sbin/grub-probe --device-map="/boot/grub/device.map"
> --target=fs -v /boot/grub :
>
>> /usr/sbin/grub-probe: info: cannot open `/boot/grub/device.map'.
>> /usr/sbin/grub-probe: info: the size of hd0 is 488397168.
>> /usr/sbin/grub-probe: info: the size of hd0 is 488397168.
>> /usr/sbin/grub-probe: info: the size of hd1 is 488397168.
>> /usr/sbin/grub-probe: info: the size of hd1 is 488397168.
>> /usr/sbin/grub-probe: info: scanning hd0 for LVM.
>> /usr/sbin/grub-probe: info: the size of hd0 is 488397168.
>> /usr/sbin/grub-probe: info: no LVM signature found
>> .
>> /usr/sbin/grub-probe: info: the size of hd0 is 488397168.
>> /usr/sbin/grub-probe: info: scanning hd1 for LVM.
>> /usr/sbin/grub-probe: info: the size of hd1 is 488397168.
>> /usr/sbin/grub-probe: info: no LVM signature found
>> .
>> /usr/sbin/grub-probe: info: the size of hd1 is 488397168.
>> /usr/sbin/grub-probe: info: the size of hd0 is 488397168.
>> /usr/sbin/grub-probe: info: the size of hd0 is 488397168.
>> /usr/sbin/grub-probe: info: the size of hd1 is 488397168.
>> /usr/sbin/grub-probe: info: the size of hd1 is 488397168.
>> /usr/sbin/grub-probe: info: the size of hd0 is 488397168.
>> /usr/sbin/grub-probe: info: the size of hd0 is 488397168.
>> /usr/sbin/grub-probe: info: the size of hd1 is 488397168.
>> /usr/sbin/grub-probe: info: the size of hd1 is 488397168.
>> /usr/sbin/grub-probe: info: the size of hd0 is 488397168.
>> /usr/sbin/grub-probe: info: the size of hd0 is 488397168.
>> /usr/sbin/grub-probe: info: the size of hd0 is 488397168.
>> /usr/sbin/grub-probe: info: the size of hd0 is 488397168.
>> /usr/sbin/grub-probe: info: the size of hd0 is 488397168.
>> /usr/sbin/grub-probe: info: the size of hd0 is 488397168.
>> /usr/sbin/grub-probe: info: the size of hd0 is 488397168.
>> /usr/sbin/grub-probe: info: the size of hd1 is 488397168.
>> /usr/sbin/grub-probe: info: the size of hd1 is 488397168.
>> /usr/sbin/grub-probe: info: the size of hd1 is 488397168.
>> /usr/sbin/grub-probe: info: the size of hd1 is 488397168.
>> /usr/sbin/grub-probe: info: the size of hd1 is 488397168.
>> /usr/sbin/grub-probe: info: the size of hd1 is 488397168.
>> /usr/sbin/grub-probe: info: the size of hd1 is 488397168.
>> /usr/sbin/grub-probe: info: the size of hd0 is 488397168.
>> /usr/sbin/grub-probe: info: the size of hd0 is 488397168.
>> /usr/sbin/grub-probe: info: the size of hd0 is 488397168.
>> /usr/sbin/grub-probe: info: the size of hd0 is 488397168.
>> /usr/sbin/grub-probe: info: the size of hd0 is 488397168.
>> /usr/sbin/grub-probe: info: the size of hd0 is 488397168.
>> /usr/sbin/grub-probe: info: the size of hd0 is 488397168.
>> /usr/sbin/grub-probe: info: the size of hd1 is 488397168.
>> /usr/sbin/grub-probe: info: the size of hd1 is 488397168.
>> /usr/sbin/grub-probe: info: the size of hd1 is 488397168.
>> /usr/sbin/grub-probe: info: the size of hd1 is 488397168.
>> /usr/sbin/grub-probe: info: the size of hd1 is 488397168.
>> /usr/sbin/grub-probe: info: the size of hd1 is 488397168.
>> /usr/sbin/grub-probe: info: the size of hd1 is 488397168.
>> /usr/sbin/grub-probe: info: scanning md/0 for LVM.
>> /usr/sbin/grub-probe: info: no LVM signature found
>> .
>> /usr/sbin/grub-probe: info: scanning md/1 for LVM.
>> /usr/sbin/grub-probe: info: no LVM signature found
>> .
>> /usr/sbin/grub-probe: info: scanning md/2 for LVM.
>> /usr/sbin/grub-probe: info: no LVM signature found
>> .
>> /usr/sbin/grub-probe: info: scanning md/3 for LVM.
>> /usr/sbin/grub-probe: info: no LVM signature found
>> .
>> /usr/sbin/grub-probe: info: scanning hd0 for LVM.
>> /usr/sbin/grub-probe: info: the size of hd0 is 488397168.
>> /usr/sbin/grub-probe: info: no LVM signature found
>> .
>> /usr/sbin/grub-probe: info: the size of hd0 is 488397168.
>> /usr/sbin/grub-probe: info: scanning hd0,msdos8 for LVM.
>> /usr/sbin/grub-probe: info: the size of hd0 is 488397168.
>> /usr/sbin/grub-probe: info: no LVM signature found
>> .
>> /usr/sbin/grub-probe: info: scanning hd0,msdos7 for LVM.
>> /usr/sbin/grub-probe: info: the size of hd0 is 488397168.
>> /usr/sbin/grub-probe: info: no LVM signature found
>> .
>> /usr/sbin/grub-probe: info: scanning hd0,msdos6 for LVM.
>> /usr/sbin/grub-probe: info: the size of hd0 is 488397168.
>> /usr/sbin/grub-probe: info: no LVM signature found
>> .
>> /usr/sbin/grub-probe: info: scanning hd0,msdos5 for LVM.
>> /usr/sbin/grub-probe: info: the size of hd0 is 488397168.
>> /usr/sbin/grub-probe: info: no LVM signature found
>> .
>> /usr/sbin/grub-probe: info: scanning hd0,msdos1 for LVM.
>> /usr/sbin/grub-probe: info: the size of hd0 is 488397168.
>> /usr/sbin/grub-probe: info: no LVM signature found
>> .
>> /usr/sbin/grub-probe: info: scanning hd1 for LVM.
>> /usr/sbin/grub-probe: info: the size of hd1 is 488397168.
>> /usr/sbin/grub-probe: info: no LVM signature found
>> .
>> /usr/sbin/grub-probe: info: the size of hd1 is 488397168.
>> /usr/sbin/grub-probe: info: scanning hd1,msdos8 for LVM.
>> /usr/sbin/grub-probe: info: the size of hd1 is 488397168.
>> /usr/sbin/grub-probe: info: no LVM signature found
>> .
>> /usr/sbin/grub-probe: info: scanning hd1,msdos7 for LVM.
>> /usr/sbin/grub-probe: info: the size of hd1 is 488397168.
>> /usr/sbin/grub-probe: info: no LVM signature found
>> .
>> /usr/sbin/grub-probe: info: scanning hd1,msdos6 for LVM.
>> /usr/sbin/grub-probe: info: the size of hd1 is 488397168.
>> /usr/sbin/grub-probe: info: no LVM signature found
>> .
>> /usr/sbin/grub-probe: info: scanning hd1,msdos5 for LVM.
>> /usr/sbin/grub-probe: info: the size of hd1 is 488397168.
>> /usr/sbin/grub-probe: info: no LVM signature found
>> .
>> /usr/sbin/grub-probe: info: scanning hd1,msdos1 for LVM.
>> /usr/sbin/grub-probe: info: the size of hd1 is 488397168.
>> /usr/sbin/grub-probe: info: no LVM signature found
>> .
>> /usr/sbin/grub-probe: info: changing current directory to /dev.
>> /usr/sbin/grub-probe: info: opening md0.
>> /usr/sbin/grub-probe: error: no such disk.
>>
>>
>
>
> # dpkg -l | grep grub:
>
>> ii  grub-common                         
>> 1.99~rc1-13ubuntu3                         GRand Unified Bootloader,
>> version 2 (common files)
>> iU  grub-gfxpayload-lists               
>> 0.2                                        GRUB gfxpayload blacklist
>> iF  grub-pc                             
>> 1.99~rc1-13ubuntu3                         GRand Unified Bootloader,
>> version 2 (PC/BIOS version)
>>
>
> I've been trying to get the new system to boot for ages, but keep
> failing to do that, and I don't know where to go from here. Can
> someone assist?
>
> regards, Tim
>
>
>
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> address@hidden
> https://lists.gnu.org/mailman/listinfo/bug-grub
>


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

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