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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