no, I don't have X. I just tried to mount --move /dev and /proc to the
new root before actually doing the pivot-root. proc/mounts doesn't show
any mountpoints under old-root afterwards, but an umount still gives
device busy...
On 03/20/2010 02:33 PM, Rogerio Luz Coelho wrote:
are you doing this with X enabled?
If so stop X before atempting a umount
Rogerio
2010/3/20 Katharina Haselhorst <bran...@mathematik.uni-marburg.de
<mailto:bran...@mathematik.uni-marburg.de>>
Hello,
I'm running debian lenny with xen kernel 2.6.26, amd64. Inside a
domU I need to make a pivot_root and unmount the old root afterwards.
I've done the following:
cd /newroot
(newroot contains a minimal system from initrd, dev/console,
dev/null and old-root are available unter newroot/)
exec <dev/console >dev/console 2>&1
pivot_root . old-root
exec chroot . bin/sh
umount -n old-root
but I always get: device is busy - so I can't umount the old root.
/proc/mounts shows that the proc fs is still mounten under
old-root/proc and an umount old-root/proc doesn't work either
(device is busy, too).
I also tried to umount proc before doing the pivot_root, but no luck
either.
Why doesn't pivot_root remove the proc mountpoint from old-root? As
I understand the documentation - it should clear all dependencies so
that the old-root can be unmounted afterwards...
Any ideas or suggestions to help would be great!
K. Haselhorst
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