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List: grub-help
Subject: md boot failure
From: Tim Johnston <tjston () daltron ! com ! pg>
Date: 2012-04-13 0:02:02
Message-ID: 4F876CFA.2050400 () daltron ! com ! pg
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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:
> 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 \
> <bug-grub@gnu.org>
> /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 \
> <bug-grub@gnu.org>
> /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 \
> <bug-grub@gnu.org>
> /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 \
> <bug-grub@gnu.org>
> /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 \
> <bug-grub@gnu.org>
> /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 \
> <bug-grub@gnu.org>
> /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 \
> <bug-grub@gnu.org> 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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