Re: Woody, initrd, raid1, boot

Thanks for CCing, Jakob - I am not subscribed to the list and was
thinking of checking the archives, but this way answering is easier (and
might not shuffle threads too much)

+ Jakob Oestergaard [off-list ref] [17.06.02 21:05]:

On Mon, Jun 17, 2002 at 05:15:11PM +0200, Thomas -Balu- Walter wrote:

[...]

quoted

        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.

Hm - thats the default woody initrd of that kernel, however I have added
the raid module, created a new initrd and got the same message - but I
can mount the initrd manually (-t cramfs -o loop) and look whats inside,
and I can spawn the shell at boot and load the modules manually (they
get loaded automatically too, but still can not find the superblocks)

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  :)

No, that would be "the easy way" - I am not supposed to give up on this
8). 

If I am able to get it running this way, I don't have to bother with
updates or other things. I could just get a new default debian
kernel-image and the initrd would be built with the new modules, ...

+ Scott Bisker [off-list ref] wrote:

What you need to do is recreate your initrd to include the modules you
need during boot.  The default mkinitrd /boot/initrd-2.4.18-686-raid1
2.4.18-686-raid1 will not suffice.

Try this.

mkinitrd --preload=raid1 --preload=xor /boot/initrd-2.4.18-686-raid1
2.4.18-686-raid1

The debian mkinitrd does not have --preload, the modules that should be
included go into /etc/mkinitrd/modules. I've added raid1 already, but
not xor? Perhaps this is the one to go for?

Not sure about on debian, but raidtools should have at least the
following tools.

/sbin/arytst
/sbin/detect_multipath
/sbin/lsraid
/sbin/raidreconf

The ones above do not exist. Woody's raidtools2 are 0.90.20010914-15

/sbin/mkraid
/sbin/raid0run
/sbin/raidhotadd
/sbin/raidhotgenerateerror
/sbin/raidhotremove
/sbin/raidsetfaulty
/sbin/raidstart
/sbin/raidstop

I have those. Do they have to be on the initrd too?

     Balu