[gentoo-user] Re: raid1 grub ext4

[James <wireless@tampabay.rr.com>]

Florian Philipp <lists <at> binarywings.net> writes:



> Your boot partition is not by any chance a logical partition and
> therefore would be (hd0,4) and not (hd0,0)?

grub> root (hd0,4)
Error 22: No such partition

No?


> You can try to use 0.90 metadata by specifying it while creating the
> RAID with mdadm. I'm using it myself because AFAIK this is the only way
> for grub to handle a single RAID containing partitions instead of
> partitions containing RAIDs.

OK so I read about this "0.90 metadata" but could not find
details (syntax) of when and exactly how to use this information.
OK, so, I've rebooted and got the md1, md2, md3 renamed by
(whatever) to md125 md127 and md126, respectively. 

I changed the fstab like so:

#/dev/md1   /boot          ext4    noauto,noatime  1 2
#/dev/md3   /              ext4    noatime         0 1
#/dev/md2   swap           swap    defaults        0 0

none        /proc       proc            defaults         0 0
/dev/cdrom  /mnt/cdrom  auto            noauto,rw,user   0 0
shm         /dev/shm    tmpfs      nodev,nosuid,noexec   0 0

/dev/md125  /boot       ext2             noauto,noatime  1 2
/dev/md126  /           ext4             noatime         0 1
/dev/md127  swap        swap             defaults        0 0


I put ext2 on /boot, re-emerged grub, edit the grub.conf,
but when I run grub I still get HD that cannot be found?

grub>  root (hd0,0)
 Filesystem type unknown, partition type 0xfd
grub> root (hd1,0)
 Filesystem type unknown, partition type 0xfd
grub> find /boot/grub/stage1
Error 15: File not found
grub> find /grub/stage1
Error 15: File not found

All the files are in /boot/grub...

ext2 support is built into the kernel, with extended attributes.

ideas? (syntax and steps to repeat after a reboot?)
Its my first software raid on gentoo, so I'm sure I've
mucked things up  a bit....


James