grub installation failure

[Andrew Sharp]

grub-probe failed to detect that the root filesystem is XFS.  it is a raid5 md 
device.

Here is the text from grub-install:

# grub-install /dev/sda
/usr/sbin/grub-probe: error: unknown filesystem.
Auto-detection of a filesystem of /dev/md1 failed.
Please report this together with the output of "/usr/sbin/grub-prob 
--device-map=/boot/grub/device.map --target=fs -v /boot/grub" to 
<address@hidden>


# /usr/sbin/grub-prob --device-map=/boot/grub/device.map --target=fs -v 
/boot/grub
/usr/sbin/grub-probe: info: the size of hd0 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd0 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd0 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd0 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd0 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd1 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd1 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd1 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd1 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd1 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd2 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd2 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd2 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd2 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd2 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd3 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd3 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd3 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd3 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd3 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd4 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd4 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd4 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd4 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd4 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd5 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd5 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd5 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd5 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd5 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd0 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd0 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd0 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd0 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd0 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd1 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd1 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd1 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd1 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd1 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd2 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd2 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd2 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd2 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd2 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd3 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd3 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd3 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd3 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd3 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd4 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd4 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd4 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd4 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd4 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd5 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd5 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd5 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd5 is 1953525168.
/usr/sbin/grub-probe: info: the size of hd5 is 1953525168.
/usr/sbin/grub-probe: info: changing current directory to /dev.
/usr/sbin/grub-probe: info: opening md/1.
/usr/sbin/grub-probe: error: unknown filesystem.
#