** Summary changed:
- Upgrade vom 10.04 LTS Server to 12.04 LTS Server breaks grub
+ mdadm 0.9 metadata at the end of the disk confuses grub
** Changed in: grub2 (Ubuntu)
Status: Incomplete => Triaged
** Changed in: grub2 (Ubuntu)
Importance: Undecided => High
** Description changed:
- I tried to upgrade a server, and i was left with a broken grub2. I think
- it has to do something with LVM/RAID.
+ When using mdadm metadata format 0.9 and the partition is at the end of
+ the disk, grub can not tell whether it is the partition or the whole
+ disk that is the raid component, resulting in errors like:
- My setup: /root lies on LVM which is on a Raid5. There's not separate
- boot partition.
-
- When i reinstall grub2 from the command-line i get the following errors:
-
- ...
-
- Setting up grub-pc (1.99-21ubuntu3) ...
-
- Creating config file /etc/default/grub with new version
error: found two disks with the index 0 for RAID md0.
error: found two disks with the index 3 for RAID md0.
error: superfluous RAID member (4 found).
error: superfluous RAID member (4 found).
error: superfluous RAID member (4 found).
- error: found two disks with the index 0 for RAID md0.
- error: found two disks with the index 3 for RAID md0.
- error: superfluous RAID member (4 found).
- error: superfluous RAID member (4 found).
- error: superfluous RAID member (4 found).
- error: found two disks with the index 0 for RAID md0.
- error: found two disks with the index 3 for RAID md0.
- error: superfluous RAID member (4 found).
- error: superfluous RAID member (4 found).
- error: superfluous RAID member (4 found).
- error: found two disks with the index 0 for RAID md0.
- error: found two disks with the index 3 for RAID md0.
- error: superfluous RAID member (4 found).
- error: superfluous RAID member (4 found).
- error: superfluous RAID member (4 found).
- error: found two disks with the index 0 for RAID md0.
- error: found two disks with the index 3 for RAID md0.
- error: superfluous RAID member (4 found).
- error: superfluous RAID member (4 found).
- error: superfluous RAID member (4 found).
- /usr/sbin/grub-probe: error: unknown filesystem.
- Auto-detection of a filesystem of /dev/mapper/lvm-root failed.
- Try with --recheck.
- If the problem persists 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-g...@gnu.org>
- error: found two disks with the index 0 for RAID md0.
- error: found two disks with the index 3 for RAID md0.
- error: superfluous RAID member (4 found).
- error: superfluous RAID member (4 found).
- error: superfluous RAID member (4 found).
- error: found two disks with the index 0 for RAID md0.
- error: found two disks with the index 3 for RAID md0.
- error: superfluous RAID member (4 found).
- error: superfluous RAID member (4 found).
- error: superfluous RAID member (4 found).
- /usr/sbin/grub-probe: error: unknown filesystem.
- Auto-detection of a filesystem of /dev/mapper/lvm-root failed.
- Try with --recheck.
- If the problem persists 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-g...@gnu.org>
- error: found two disks with the index 0 for RAID md0.
- error: found two disks with the index 3 for RAID md0.
- error: superfluous RAID member (4 found).
- error: superfluous RAID member (4 found).
- error: superfluous RAID member (4 found).
- error: found two disks with the index 0 for RAID md0.
- error: found two disks with the index 3 for RAID md0.
- error: superfluous RAID member (4 found).
- error: superfluous RAID member (4 found).
- error: superfluous RAID member (4 found).
- /usr/sbin/grub-probe: error: unknown filesystem.
- Auto-detection of a filesystem of /dev/mapper/lvm-root failed.
- Try with --recheck.
- If the problem persists 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-g...@gnu.org>
- error: found two disks with the index 0 for RAID md0.
- error: found two disks with the index 3 for RAID md0.
- error: superfluous RAID member (4 found).
- error: superfluous RAID member (4 found).
- error: superfluous RAID member (4 found).
- error: found two disks with the index 0 for RAID md0.
- error: found two disks with the index 3 for RAID md0.
- error: superfluous RAID member (4 found).
- error: superfluous RAID member (4 found).
- error: superfluous RAID member (4 found).
- /usr/sbin/grub-probe: error: unknown filesystem.
- Auto-detection of a filesystem of /dev/mapper/lvm-root failed.
- Try with --recheck.
- If the problem persists 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-g...@gnu.org>
- error: found two disks with the index 0 for RAID md0.
- error: found two disks with the index 3 for RAID md0.
- error: superfluous RAID member (4 found).
- error: superfluous RAID member (4 found).
- error: superfluous RAID member (4 found).
- error: found two disks with the index 0 for RAID md0.
- error: found two disks with the index 3 for RAID md0.
- error: superfluous RAID member (4 found).
- error: superfluous RAID member (4 found).
- error: superfluous RAID member (4 found).
- /usr/sbin/grub-probe: error: unknown filesystem.
- Auto-detection of a filesystem of /dev/mapper/lvm-root failed.
- Try with --recheck.
- If the problem persists 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-g...@gnu.org>
+ This can cause unexpected failure after upgrading from 10.04.
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https://bugs.launchpad.net/bugs/999076
Title:
mdadm 0.9 metadata at the end of the disk confuses grub
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