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Re: Problems installing grub/lilo with RAID1 on /

On Sun, Jun 5, 2011 at 3:30 PM, Felix Natter
<felix.natter@smail.inf.fh-brs.de> wrote:

> I am trying to install squeeze (from live DVD[1]) with a RAID1 root
> filesystem (/dev/md0).
> There is an error when running grub-install:
> Jun 5 18:38:18 grub-installer: error: Running 'grub-install --no-floppy --force "/dev/sda"' failed.
> I tried to run it manually:
> chroot /target grub-install --no-floppy --force /dev/sda
> /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>

Does "/target/etc/mtab" exist and is it correct?

> chroot /target /usr/sbin/grub-probe --device-map=/boot/grub/device.map --target=fs -v /boot/grub
> /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: changing current directory to /dev.
> /usr/sbin/grub-probe: info: changing current directory to mapper.
> /usr/sbin/grub-probe: info: opening md0.
> /usr/sbin/grub-probe: error: no such disk.

On both Debian and Ubuntu, I used to be able to run "dpkg-reconfigure
grub-pc", choose md0, sda, and sdb, and grub would be installed on all
three. For a while now (I can't remember for how long), installing to
md0's failed.

> When trying to install lilo (with the debian-installler), I get
> "inconsistent raid information" (but the RAID1 (2x 208G) was created
> with debian-installer):
> Jun 5 19:22:00 in-target: Running lilo...
> Jun 5 19:22:01 in-target: Fatal:
> Jun 5 19:22:01 in-target: Inconsistent Raid version information on /dev/md0  (RV=0.90 GAI=1.2)

What do RV and GAI mean? I've googled both and not foudn anything to
help. "0.90" and "1.2" are mdraid metadata versions. Were these disks
previously in another array and do you now have two types of metada on

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