I'm making a boot CD and having problems unmounting and freeing the initrd after pivoting to a different root. First off, for some reaosn it seems that /linuxrc is not being executed. Just to test this, I have it as a simple script (with execute permissions) printing something to the screen and it never printed....at boot it just seems to go to /sbin/init on the initrd image. After pivoting to a cramfs root, I cannot unmount /initrd as it says that the device or resource is busy. Checking out /proc, it looks like [keventd], [ksoftirqd_CPU0], [kswapd] and [kupdated] are holding onto open fd from /initrd, namely /initrd/dev/console. Strangely though, some of the fd's they're holding are the "normal" /dev/console.
My /sbin/init on the initrd script looks something like:
#I have the new root mount on /new_root/root.cfs and all directories are set up to pivot
cd /new_root
pivot_root . initrd
export PATH=/bin:/usr/bin:/sbin
echo Done pivoting
umount /initrd/proc
umount /initrd/devfs
umount /initrd
exec chroot . sbin/startup < dev/console > dev/console 2> dev/console
Should i unmount /proc and /devfs before I pivot? Any suggestions would be wonderful!
Cheers,
James
Please CC to me directly if you can, i'm not suscribed to the mailing list, bad me!
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On Wed, Aug 21, 2002 at 07:57:30PM -0500, James Hayhurst wrote:
> I'm making a boot CD and having problems unmounting and freeing the initrd after pivoting to a different root. First off, for some reaosn it seems that /linuxrc is not being executed.
don't use 'root=/dev/ramX' if you want linuxrc executed.
Richard