Install grub on nvdia dmraid10 ?

[Thomas Backlund]

Darrick J. Wong skrev:
> Thomas Backlund wrote:
>> Hi,
>> has anyone successfully installed grub on a nvidia dmraid10 ?
>>
>> I have a setup of 4 160GB disks configured through bios to do raid10,
>> made the partitions under WinXP with Partition Magic and I can access
>> the /dev/mapper/nvidia_* partitions just fine from a livecd as they are
>> correctly identified with dmraid -ay...
> 
> afaik, grub doesn't know how to determine which dm devices map back to
> BIOS devices.  You can manually set up a mapping in the grub shell:
> 
> device (hd0) /dev/mapper/blah
> 
> ...though you'll want to specify the device's BIOS geometry via "dmsetup
> setgeometry c h s" first.  At some point I'll patch dmraid to do this
> automatically (unless someone beats me to it ;)).
> 
> Note that for an installed system you can put "(hd0) /dev/mapper/blah"
> in /boot/grub/device.map.
> 

Unfortunately:

[root at localhost grub]# grub --device-map=/dev/null

GNU GRUB  version 0.97-17mdv2007.0  (640K lower / 3072K upper memory)
[ Minimal BASH-like line editing is supported.   For
   the   first   word,  TAB  lists  possible  command
   completions.  Anywhere else TAB lists the possible
   completions of a device/filename. ]

grub> device (hd0,0) /dev/mapper/nvidia_eaeccaag1
device (hd0,0) /dev/mapper/nvidia_eaeccaag1
grub> device (hd0) /dev/mapper/nvidia_eaeccaag
device (hd0) /dev/mapper/nvidia_eaeccaag
grub> root (hd0,0)
root (hd0,0)
  Filesystem type is ext2fs, partition type 0x83
grub> setup (hd0)
setup (hd0)
  Checking if "/boot/grub/stage1" exists... yes
  Checking if "/boot/grub/stage2" exists... yes
  Checking if "/boot/grub/e2fs_stage1_5" exists... yes
  Running "embed /boot/grub/e2fs_stage1_5 (hd0)"...  15 sectors are 
embedded.
succeeded
  Running "install /boot/grub/stage1 (hd0) (hd0)1+15 p 
(hd0,0)/boot/grub/stage2 /boot/grub/menu.lst"... failed

Error 22: No such partition
grub> quit



and it does not help to have:
device (hd0) /dev/mapper/nvidia_eaeccaag

in boot/grub/device.map


Any ideas ?
--
Thomas