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booting 2.5.68 with root on software raid and devfs?

DISCUSSION Pierfrancesco Caci 2 participants 3 messages Apr 21, 2003

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Pierfrancesco Caci

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#0 lore raw

Hi,

anyone has an idea why 2.5.68 can't boot (it sends a panic, can't mount root on md(9,0) message and dies) off a raid1+devfs setup that works perfectly on 2.4.x ?

I have the suspect that something in the naming of devices has changed, but I can't find any reference by googling around.

Here's my setup, as 2.4.21-pre7 sees it:

root@penny:~ # mount
/dev/md/0 on / type ext3 (rw)
proc on /proc type proc (rw)
/dev/penny/niglia on /usr type ext3 (rw) /dev/penny/viola on /var type ext3 (rw) /dev/penny/tippete on /home type ext3 (rw) /dev/kim/felix on /usr/src type ext3 (rw) /dev/kim/isidoro on /home/ftp/pub type ext3 (rw,noatime) /dev/gattaia/pink on /scratch type ext3 (rw) tmpfs on /dev/shm type tmpfs (rw)
usbdevfs on /proc/bus/usb type usbdevfs (rw)

root@penny:~ # cat /proc/mdstat
Personalities : [raid0] [raid1]
read_ahead 1024 sectors
md0 : active raid1 ide/host0/bus1/target1/lun0/part1[1] ide/host0/bus0/target0/lun0/part1[0]

      248896 blocks [2/2] [UU]

md1 : active raid1 ide/host0/bus1/target1/lun0/part2[1] ide/host0/bus0/target0/lun0/part2[0]

      39896576 blocks [2/2] [UU]

unused devices: <none>

root@penny:~ # head /etc/lilo.conf
#disk=/dev/hda
# bios=0x80
#disk=/dev/hdd
# bios=0x81
boot=/dev/md0
root=/dev/md0
raid-extra-boot=/dev/hda,/dev/hdd
#compact
#linear
lba32

Any ideas where to start looking ?

Thanks

Pf

Signature · 4 lines
-------------------------------------------------------------------------------
 Pierfrancesco Caci | ik5pvx | mailto:[email protected]  -  http://gusp.dyndns.org
  Firenze - Italia  | Office for the Complication of Otherwise Simple Affairs 
     Linux penny 2.4.21-pre7 #1 Sat Apr 12 09:12:33 CEST 2003 i686 GNU/Linux
#1 lore raw
Quoted 11 lines · Pierfrancesco Caci

root@penny:~ # head /etc/lilo.conf
#disk=/dev/hda
# bios=0x80
#disk=/dev/hdd
# bios=0x81
boot=/dev/md0
root=/dev/md0
raid-extra-boot=/dev/hda,/dev/hdd
#compact
#linear
lba32

No idea how lilo maps all this to a kernel command line, but in 2.5 you need to pass the devfs names to the kernel if using devfs, not the old ones.

author
#2 lore raw
Quoted 13 lines · :-> "Christoph" == Christoph Hellwig <[email protected]> writes:
Quoted 11 lines · Pierfrancesco Caci

root@penny:~ # head /etc/lilo.conf
#disk=/dev/hda
# bios=0x80
#disk=/dev/hdd
# bios=0x81
boot=/dev/md0
root=/dev/md0
raid-extra-boot=/dev/hda,/dev/hdd
#compact
#linear
lba32

Quoted 3 lines

No idea how lilo maps all this to a kernel command line, but in 2.5 you need to pass the devfs names to the kernel if using devfs, not the old ones.

Yep. Passing /dev/md/0 did it, and I'm now stuck with my partitions on LVM that I don't know how to mount... Ahh, the bleeding edge :-)

Thanks :)

Pf

Signature · 4 lines
-------------------------------------------------------------------------------
 Pierfrancesco Caci | ik5pvx | mailto:[email protected]  -  http://gusp.dyndns.org
  Firenze - Italia  | Office for the Complication of Otherwise Simple Affairs 
     Linux penny 2.4.21-pre7 #1 Sat Apr 12 09:12:33 CEST 2003 i686 GNU/Linux