On Mon, Jun 17, 2002 at 05:15:11PM +0200, Thomas -Balu- Walter wrote: > First two smaller questions/notes: > The FAQ at http://www.tldp.org/FAQ/Linux-RAID-FAQ/index.html lists > three mailinglist-archives, while only > http://marc.theaimsgroup.com/?l=linux-raid&r=1&w=2 seems to have actual > mails (I was kinda shocked that the last mails were coming from 2000 :) > > What are the actual raidtools? raidtools-20010914? On debian woody here, I use 0.90.20010914-15 > > Now to a something more complex problem (which I am going to despair on): > > I've read different HOWTOs, Hints, Tipps and tricks, but none helped. I'm sorry to hear that :) > > I am trying to set up a debian (woody) system running the > debian-packaged 2.4.18-686-kernel that boots from "root=/dev/md1" (and > uses the debian-initrd to load the md-modules) > > To do so, I've installed a minimal woody using a netinstall-CD and > upgraded it to kernel-image-2.4.18-686 (including the initrd-changes to > lilo). The system got installed on hda: > > Disk /dev/hda: 4865 cylinders, 255 heads, 63 sectors/track > Units = cylinders of 8225280 bytes, blocks of 1024 bytes, counting from 0 > > Device Boot Start End #cyls #blocks Id System > /dev/hda1 * 0+ 5 6- 48163+ 83 Linux > /dev/hda2 6 67 62 498015 82 Linux swap > /dev/hda3 68 675 608 4883760 83 Linux > /dev/hda4 0 - 0 0 0 Empty > > while /dev/hhda1 is mounted as /boot and /dev/hda3 is mounted as / and > /dev/hdc got exact the same partition table. > > I rebooted to get 2.4.18 up and running, then I've changed the > /dev/hdc-partitions to be Raid-Autodetect and set up the following > /etc/raidtab: > > # /boot > raiddev /dev/md0 > raid-level 1 > nr-raid-disks 2 > nr-spare-disks 0 > chunk-size 4 > persistent-superblock 1 > device /dev/hdc1 > raid-disk 0 > device /dev/hda1 > failed-disk 1 > > # / > raiddev /dev/md1 > raid-level 1 > nr-raid-disks 2 > nr-spare-disks 0 > chunk-size 4 > persistent-superblock 1 > device /dev/hdc3 > raid-disk 0 > device /dev/hda3 > failed-disk 1 Good > > I've prepared the md-devices using mkraid and mke2fs, mounted them > /dev/md1 -> /mnt > /dev/md0 -> /mnt/boot Good > > Next was to "cp -a" the installed system on the md-devices (all but > /mnt, /proc and /lost+found) and change /mnt/etc/fstab to mount the > md-devices instead of the original /dev/hda partitions. > > So far, everything is okay. Next I tried to reboot and at boot I told > lilo to run "Linux root=/dev/md1", but I get > > md: md driver 0.90.0 MAX_MD... > cramfs: wrong magic > EXT3-FS: unable to read superblock > EXT2-FS: unable to read superblock > Kernel panic: VFS: Unable to mount root fs on 09:01 Since it's cramfs that complains, I suppose it's your initrd that is bad. > > Missing the raid-module, I've added "raid1" to /etc/mkinitrd/modules and > created a new initrd: > # mkinitrd -o /boot/initrd-2.4.18-686-raid1 /lib/modules/2.4.18-686 > # ln -sf /boot/initrd-2.4.18-686-raid1 /initrd.img > # lilo > > Now the raid1-module gets loaded right after the md-module, but I keep > getting the same error. > > I've also tried the way James Bromberger suggests in > http://www.james.rcpt.to/programs/debian/raid1/ - especially using > (manually entered by now though) the append parameters > "md=0,/dev/hdc1,/dev/hda1", and "root=/dev/md0" (and > "md=1,/dev/hdc3,/dev/hda3") and and and. > > Also tested was root=/dev/md1 in mkinitrd.conf. > > Another approach was adding the values to lilo.conf - > boot=/dev/md0 > root=/dev/md1 > (which should not make a difference than adding it to the lilo-prompt?) > > One of my biggest problems is, that I don't know where the problem is > located - is it lilo (which boots the kernel and initrd and should be > fine?), initrd (missing a module?) or the root-filesystem on the > md-devices, or even the md-devices themself (it should be possible to > boot from a degraded device?) It looks like you have an initrd problem. > > I am really clueless... :-/ any hints? Compile the RAID-1 into the kernel, forget about using modules. That is the simple solution that I use - I am no initrd expert, and I have no intentions of becoming one :) -- ................................................................ : jakob@unthought.net : And I see the elder races, : :.........................: putrid forms of man : : Jakob Østergaard : See him rise and claim the earth, : : OZ9ABN : his downfall is at hand. : :.........................:............{Konkhra}...............: - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
