Re: Booting from raid1 -- md: invalid raid superblock magic on sdb1

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On Saturday 26 November 2005 11:14:46, David M. Strang wrote:
sdb1 is a 400GB partition -- it is type FD.

Disk /dev/sdb: 400.0 GB, 400088457216 bytes
2 heads, 4 sectors/track, 97677846 cylinders
Units = cylinders of 8 * 512 = 4096 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1 1 97677846 390711382 fd Linux raid autodetect


OK, I've dumped the autodetect raid type. It seems it's pointless on v1.0 superblocks -- it was just generating an 'extra' error.

Disk /dev/sdb: 400.0 GB, 400088457216 bytes
2 heads, 4 sectors/track, 97677846 cylinders
Units = cylinders of 8 * 512 = 4096 bytes

  Device Boot      Start         End      Blocks   Id  System
/dev/sdb1               1    97677846   390711382   83  Linux


Here is my lilo.conf settings; I'm attempting to get it to mount md_d0 when the kernel starts. I realize that automount (type FD) no longer functions with a version-1 superblock.

#
# /etc/lilo.conf: lilo(8) configuration, see lilo.conf(5)
#

lba32
install=text
boot=/dev/sda
map=/boot/System.map
image=/vmlinuz
        label=CRUX
        root=/dev/sda1
        read-only
        append="quiet md=d0,/dev/sdb1"

# End of file


Without fail, every time the system boots -- I get the following message:

md: invalid raid superblock magic on sdb1


This still persists. Are there some patches to the kernel or something that I need for it to recognize v1.0 superblocks? I'm running Linux v2.6.14.3

As I mentioned before, mdadm can state the array w/o any issues at all...

-- David M. Strang
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