[Bug 390760] Re: [Jaunty Amd64] mount sometimes refuses to mount an mdadm RAID1 array

[Phillip Susi]

Intrepid has reached end of life.  Do you still have this problem on an
supported release?


** Changed in: util-linux (Ubuntu)
       Status: New => Incomplete

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Title:
  [Jaunty Amd64] mount sometimes refuses to mount an mdadm RAID1 array

Status in “util-linux” package in Ubuntu:
  Incomplete

Bug description:
  I recently switched from intrepid AMD64 to Jaunty AMD64 by means of
  clean install. After I installed Jaunty, I also recreated my RAID1
  array (I had some problems with ext3 on Intrepid, recreating seemed
  safer). However, now that I have created the raid array, sometimes
  mount simply refuses to mount the md device that mdadm created
  (/dev/md_d0):

  j at Brutus:~$ sudo mount /dev/md_d0
  mount: wrong fs type, bad option, bad superblock on /dev/md_d0,
         missing codepage or helper program, or other error
         (could this be the IDE device where you in fact use
         ide-scsi so that sr0 or sda or so is needed?)
         In some cases useful info is found in syslog - try
         dmesg | tail  or so

  j at Brutus:~$ dmesg | tail
  [37105.234062] sd 10:0:0:0: [sdd] 1953525168 512-byte hardware sectors: (1.00 TB/931 GiB)
  [37105.234687] sd 10:0:0:0: [sdd] Write Protect is off
  [37105.234689] sd 10:0:0:0: [sdd] Mode Sense: 2d 08 00 00
  [37105.234691] sd 10:0:0:0: [sdd] Assuming drive cache: write through
  [37105.234694]  sdd: sdd1
  [37105.261184] sd 10:0:0:0: [sdd] Attached SCSI disk
  [37105.261247] sd 10:0:0:0: Attached scsi generic sg5 type 0
  [50040.638569] EXT4-fs: unable to read superblock
  [50045.037962] EXT4-fs: unable to read superblock
  [50409.161949] EXT3-fs: unable to read superblock

  The weird thing is, while sometimes it simply refuses to mount it
  (happens right after a reboot), at other times after a reboot it
  *does* mount successfully. The RAID1 array consists of 2 Samsung
  Spinpoint F1's, 1TB each, and each formatted in Ext3.

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