[bug #34250] grub-probe error: found two disks with the index 0 for RAID md0 / superfluous RAID member (2 found)

[Pedro Monteiro]

URL:
  <http://savannah.gnu.org/bugs/?34250>

                 Summary: grub-probe error: found two disks with the index 0
for RAID md0 / superfluous RAID member (2 found)
                 Project: GNU GRUB
            Submitted by: ptsmonteiro
            Submitted on: Thu 08 Sep 2011 02:06:38 PM GMT
                Category: Installation
                Severity: Major
                Priority: 5 - Normal
              Item Group: Software Error
                  Status: None
                 Privacy: Public
             Assigned to: None
         Originator Name: Pedro Monteiro
        Originator Email: address@hidden
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 
                 Release: other
         Reproducibility: Every Time
         Planned Release: None

    _______________________________________________________

Details:

I've just upgraded from Ubuntu Maverick to Ubuntu Natty and I'm getting Grub
related errors:

-----------------------------------------
Setting up linux-image-2.6.38-11-generic (2.6.38-11.48) ...
Running depmod.
update-initramfs: Generating /boot/initrd.img-2.6.38-11-generic
Examining /etc/kernel/postinst.d.
run-parts: executing /etc/kernel/postinst.d/dkms 2.6.38-11-generic
/boot/vmlinuz-2.6.38-11-generic
 * dkms: running auto installation service for kernel 2.6.38-11-generic
 * vboxhost (4.0.4)... [ OK ]
 * nvidia-current (270.41.06)... [ OK ]
run-parts: executing /etc/kernel/postinst.d/initramfs-tools 2.6.38-11-generic
/boot/vmlinuz-2.6.38-11-generic
run-parts: executing /etc/kernel/postinst.d/nvidia-common 2.6.38-11-generic
/boot/vmlinuz-2.6.38-11-generic
run-parts: executing /etc/kernel/postinst.d/pm-utils 2.6.38-11-generic
/boot/vmlinuz-2.6.38-11-generic
run-parts: executing /etc/kernel/postinst.d/update-notifier 2.6.38-11-generic
/boot/vmlinuz-2.6.38-11-generic
run-parts: executing /etc/kernel/postinst.d/zz-update-grub 2.6.38-11-generic
/boot/vmlinuz-2.6.38-11-generic
error: found two disks with the index 0 for RAID md0.
error: superfluous RAID member (2 found).
error: found two disks with the index 0 for RAID md0.
error: superfluous RAID member (2 found).
Generating grub.cfg ...
error: found two disks with the index 0 for RAID md0.
error: superfluous RAID member (2 found).
error: found two disks with the index 0 for RAID md0.
error: superfluous RAID member (2 found).
error: found two disks with the index 0 for RAID md0.
error: superfluous RAID member (2 found).
error: found two disks with the index 0 for RAID md0.
error: superfluous RAID member (2 found).
/usr/sbin/grub-probe: error: unknown filesystem.
run-parts: /etc/kernel/postinst.d/zz-update-grub exited with return code 1
Failed to process /etc/kernel/postinst.d at
/var/lib/dpkg/info/linux-image-2.6.38-11-generic.postinst line 1010.
dpkg: error processing linux-image-2.6.38-11-generic (--configure):
 subprocess installed post-installation script returned error exit status 2
Setting up memtest86+ (4.10-1.1ubuntu1) ...
error: found two disks with the index 0 for RAID md0.
error: superfluous RAID member (2 found).
error: found two disks with the index 0 for RAID md0.
error: superfluous RAID member (2 found).
Generating grub.cfg ...
error: found two disks with the index 0 for RAID md0.
error: superfluous RAID member (2 found).
error: found two disks with the index 0 for RAID md0.
error: superfluous RAID member (2 found).
error: found two disks with the index 0 for RAID md0.
error: superfluous RAID member (2 found).
error: found two disks with the index 0 for RAID md0.
error: superfluous RAID member (2 found).
/usr/sbin/grub-probe: error: unknown filesystem.
dpkg: error processing memtest86+ (--configure):
 subprocess installed post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of ubuntu-standard:
 ubuntu-standard depends on memtest86+; however:
  Package memtest86+ is not configured yet.
dpkg: error processing ubuntu-standard (--configure):
 dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of linux-image-generic:
 linux-image-generic depends on linux-image-2.6.38-11-generic; however:
  Package linux-image-2.6.38-11-generic is not configured yet.
dpkg: error processing linux-image-generic (--configure):
 dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of linux-generic:
 linux-generic depends on linux-image-generic (= 2.6.38.11.26); however:
  Package linux-image-generic is not configured yet.
dpkg: error processing linux-generic (--configure):
 dependency problems - leaving unconfigured
No apport report written because the error message indicates its a followup
error from a previous failure.
No apport report written because MaxReports is reached already
                                                              No apport report
written because MaxReports is reached already
                  Setting up grub-pc (1.99~rc1-13ubuntu3) ...
error: found two disks with the index 0 for RAID md0.
error: superfluous RAID member (2 found).
error: found two disks with the index 0 for RAID md0.
error: superfluous RAID member (2 found).
Generating grub.cfg ...
error: found two disks with the index 0 for RAID md0.
error: superfluous RAID member (2 found).
error: found two disks with the index 0 for RAID md0.
error: superfluous RAID member (2 found).
error: found two disks with the index 0 for RAID md0.
error: superfluous RAID member (2 found).
error: found two disks with the index 0 for RAID md0.
error: superfluous RAID member (2 found).
/usr/sbin/grub-probe: error: unknown filesystem.
dpkg: error processing grub-pc (--configure):
 subprocess installed post-installation script returned error exit status 1
No apport report written because MaxReports is reached already
                                                              dpkg: dependency
problems prevent configuration of grub-gfxpayload-lists:
 grub-gfxpayload-lists depends on grub-pc (>= 1.99~20101210-1ubuntu2);
however:
  Package grub-pc is not configured yet.
dpkg: error processing grub-gfxpayload-lists (--configure):
 dependency problems - leaving unconfigured
No apport report written because MaxReports is reached already
                                                              Errors were
encountered while processing:
 linux-image-2.6.38-11-generic
 memtest86+
 ubuntu-standard
 linux-image-generic
 linux-generic
 grub-pc
 grub-gfxpayload-lists
E: Sub-process /usr/bin/dpkg returned an error code (1)
-----------------------------------------

The are 7 packages left to install/upgrade:
---
7 not fully installed or removed.
Conf linux-image-2.6.38-11-generic (2.6.38-11.48 Ubuntu:11.04/natty-updates
[amd64])
Conf memtest86+ (4.10-1.1ubuntu1 Ubuntu:11.04/natty [amd64])
Conf ubuntu-standard (1.220 Ubuntu:11.04/natty [amd64])
Conf grub-gfxpayload-lists (0.2 Ubuntu:11.04/natty [amd64])
Conf grub-pc (1.99~rc1-13ubuntu3 Ubuntu:11.04/natty [amd64])
Conf linux-image-generic (2.6.38.11.26 Ubuntu:11.04/natty-updates [amd64])
Conf linux-generic (2.6.38.11.26 Ubuntu:11.04/natty-updates [amd64])
---

The problem appears to be in grub-probe:
---
$ sudo grub-probe /
error: found two disks with the index 0 for RAID md0.
error: superfluous RAID member (2 found).
grub-probe: error: unknown filesystem.
---

More verbose:
----------------
$ sudo grub-probe -v /
grub-probe: info: cannot open `/boot/grub/device.map'.
grub-probe: info: the size of hd0 is 976773168.
grub-probe: info: the size of hd0 is 976773168.
grub-probe: info: the size of hd1 is 976773168.
grub-probe: info: the size of hd1 is 976773168.
grub-probe: info: scanning hd0 for LVM.
grub-probe: info: the size of hd0 is 976773168.
grub-probe: info: no LVM signature found
.
grub-probe: info: the size of hd0 is 976773168.
grub-probe: info: scanning hd1 for LVM.
grub-probe: info: the size of hd1 is 976773168.
grub-probe: info: no LVM signature found
.
grub-probe: info: the size of hd1 is 976773168.
grub-probe: info: the size of hd0 is 976773168.
grub-probe: info: the size of hd0 is 976773168.
grub-probe: info: the size of hd1 is 976773168.
grub-probe: info: the size of hd1 is 976773168.
grub-probe: info: the size of hd0 is 976773168.
grub-probe: info: the size of hd0 is 976773168.
grub-probe: info: the size of hd1 is 976773168.
grub-probe: info: the size of hd1 is 976773168.
grub-probe: info: the size of hd0 is 976773168.
grub-probe: info: the size of hd0 is 976773168.
grub-probe: info: the size of hd0 is 976773168.
error: found two disks with the index 0 for RAID md0.
grub-probe: info: the size of hd0 is 976773168.
grub-probe: info: the size of hd0 is 976773168.
grub-probe: info: the size of hd0 is 976773168.
grub-probe: info: the size of hd1 is 976773168.
grub-probe: info: the size of hd1 is 976773168.
grub-probe: info: the size of hd1 is 976773168.
error: superfluous RAID member (2 found).
grub-probe: info: the size of hd1 is 976773168.
grub-probe: info: the size of hd1 is 976773168.
grub-probe: info: the size of hd1 is 976773168.
grub-probe: info: the size of hd0 is 976773168.
grub-probe: info: the size of hd0 is 976773168.
grub-probe: info: the size of hd0 is 976773168.
grub-probe: info: the size of hd0 is 976773168.
grub-probe: info: the size of hd0 is 976773168.
grub-probe: info: the size of hd0 is 976773168.
grub-probe: info: the size of hd1 is 976773168.
grub-probe: info: the size of hd1 is 976773168.
grub-probe: info: the size of hd1 is 976773168.
grub-probe: info: the size of hd1 is 976773168.
grub-probe: info: the size of hd1 is 976773168.
grub-probe: info: the size of hd1 is 976773168.
grub-probe: info: scanning md0 for LVM.
grub-probe: info: no LVM signature found
.
grub-probe: info: scanning md0,msdos5 for LVM.
grub-probe: info: no LVM signature found
.
grub-probe: info: scanning md0,msdos3 for LVM.
grub-probe: info: no LVM signature found
.
grub-probe: info: scanning md0,msdos2 for LVM.
grub-probe: info: no LVM signature found
.
grub-probe: info: scanning md0,msdos1 for LVM.
grub-probe: info: no LVM signature found
.
grub-probe: info: scanning hd0 for LVM.
grub-probe: info: the size of hd0 is 976773168.
grub-probe: info: no LVM signature found
.
grub-probe: info: the size of hd0 is 976773168.
grub-probe: info: scanning hd0,msdos5 for LVM.
grub-probe: info: the size of hd0 is 976773168.
grub-probe: info: no LVM signature found
.
grub-probe: info: scanning hd0,msdos3 for LVM.
grub-probe: info: the size of hd0 is 976773168.
grub-probe: info: no LVM signature found
.
grub-probe: info: scanning hd0,msdos2 for LVM.
grub-probe: info: the size of hd0 is 976773168.
grub-probe: info: no LVM signature found
.
grub-probe: info: scanning hd0,msdos1 for LVM.
grub-probe: info: the size of hd0 is 976773168.
grub-probe: info: no LVM signature found
.
grub-probe: info: scanning hd1 for LVM.
grub-probe: info: the size of hd1 is 976773168.
grub-probe: info: no LVM signature found
.
grub-probe: info: the size of hd1 is 976773168.
grub-probe: info: scanning hd1,msdos5 for LVM.
grub-probe: info: the size of hd1 is 976773168.
grub-probe: info: no LVM signature found
.
grub-probe: info: scanning hd1,msdos3 for LVM.
grub-probe: info: the size of hd1 is 976773168.
grub-probe: info: no LVM signature found
.
grub-probe: info: scanning hd1,msdos2 for LVM.
grub-probe: info: the size of hd1 is 976773168.
grub-probe: info: no LVM signature found
.
grub-probe: info: scanning hd1,msdos1 for LVM.
grub-probe: info: the size of hd1 is 976773168.
grub-probe: info: no LVM signature found
.
grub-probe: info: changing current directory to /dev.
grub-probe: info: changing current directory to snd.
grub-probe: info: changing current directory to by-path.
grub-probe: info: changing current directory to vboxusb.
grub-probe: info: changing current directory to 003.
grub-probe: info: changing current directory to cpu.
grub-probe: info: changing current directory to shm.
grub-probe: info: opening md0.
grub-probe: error: unknown filesystem.
----------------

'mount' output:
---
/dev/md0 on / type ext4 (rw,errors=remount-ro,commit=0)
proc on /proc type proc (rw,noexec,nosuid,nodev)
none on /sys type sysfs (rw,noexec,nosuid,nodev)
fusectl on /sys/fs/fuse/connections type fusectl (rw)
none on /sys/kernel/debug type debugfs (rw)
none on /sys/kernel/security type securityfs (rw)
none on /dev type devtmpfs (rw,mode=0755)
none on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)
none on /dev/shm type tmpfs (rw,nosuid,nodev)
none on /var/run type tmpfs (rw,nosuid,mode=0755)
none on /var/lock type tmpfs (rw,noexec,nosuid,nodev)
none on /var/lib/ureadahead/debugfs type debugfs (rw,relatime)
gvfs-fuse-daemon on /home/pedro/.gvfs type fuse.gvfs-fuse-daemon
(rw,nosuid,nodev,user=pedro)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc
(rw,noexec,nosuid,nodev)
---

'fdisk -l' output:
---
Disk /dev/sdb: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000080

   Device Boot Start End Blocks Id System
/dev/sdb1 1 24 192748+ de Dell Utility
/dev/sdb2 * 25 286 2104515 b W95 FAT32
/dev/sdb3 287 772 3903795 82 Linux swap / Solaris
/dev/sdb4 773 60802 482182145 5 Extended
/dev/sdb5 773 60802 482182144 fd Linux raid autodetect

Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000080

   Device Boot Start End Blocks Id System
/dev/sda1 1 24 192748+ de Dell Utility
/dev/sda2 * 25 286 2104515 b W95 FAT32
/dev/sda3 287 772 3903795 82 Linux swap / Solaris
/dev/sda4 773 60802 482182145 5 Extended
/dev/sda5 773 60802 482182144 fd Linux raid autodetect

Disk /dev/md0: 493.8 GB, 493754449920 bytes
2 heads, 4 sectors/track, 120545520 cylinders
Units = cylinders of 8 * 512 = 4096 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

Disk /dev/md0 doesn't contain a valid partition table
---

/proc/mdstat:
---
$ cat /proc/mdstat
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4]
[raid10]
md0 : active raid1 sda5[0] sdb5[1]
      482182080 blocks [2/2] [UU]

unused devices: <none>
---

Current kernel is:
Linux 2.6.35-30-generic #56-Ubuntu SMP Mon Jul 11 20:01:08 UTC 2011 x86_64
x86_64 x86_64 GNU/Linux





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