This is my first post to the mailinglist, so I hope you'll bear with
me. I've spent quite some time spent the last four days searching,
reading, experimenting trying to find the solution to the following
I'm experimenting on a box with three disks with having a root
filesystem on XFS on RAID5. I'm having problems booting Linux if I
have an external log (as recommended in the faq). I've tried with
2.4.18 with the 2.4.18-patch from the ftp-server and with 2.4.14 with
the 1.0.2 patch as distributed by Debian.
My setup is three identical disks that look like this:
hda1 small /boot
hda2 raid1 for the log (md1)
hda3 swap/temporary ext2fs-root while experimenting
hda4 raid5 for my xfs-/ (md0)
Now, I 'mkfs.xfs -l logdev=/dev/md1 /dev/md0', and the fs is
created. I can mount it with 'mount -o logdev=/dev/md1 /dev/md0 /mnt'
and copy stuff to it. That's all fine.
But when I configure lilo to use /dev/md0 as root and reboot, I can't
make it work. I have different scenarios depending on what I try:
*) Without initrd and no options: Linux boots and gets to the
point where it tries to mount / - it then says that xfs needs a
logdev-option to mount the partition, and the kernel panics.
*) Without initrd and passing LILO linux rootflags=logdev=/dev/md1:
Linux boots, EXT2fs complains that it doesn't know what to do with
logdev, and I get a kernel oops (when XFS tries to mount?)
*) Without initrd and passing LILO linux rootflags="logdev=/dev/md1"
(wrong format for option): Linux boots, EXT2fs complains about
"log, XFS complains about "log - the root fs isn't mounted, and
the kernel panics.
*) If I build the kernel with initrd and tell lilo to use it, XFS
complains about the lacking logdev-option. I've searched and read
and it seems to me that it should be extremely simple to make an
initrd that mounts /dev/md0 as / with logdev=/dev/md1, but none of
the stuff I've found has been "cookbook" enough to give me a clue
I'm using Debians kernel-package' make-kpkg (with/without --initrd) to
build a kernel-image-package which I then install.
If someone could point me in the right direction, I'd be very happy.
I don't want to install a lot of stuff on an xfs-filesystem with an
internal log (which I _can_ get Linux to mount when booting, it's not
all misery :-)) when/if I can't (easily) change from internal to
external later on...
"Well, I'm a moon around you" Adam Sjøgren