Messages in this thread | | | From | "H. Peter Anvin" <> | Subject | Re: pivot_root off an initramfs broken | Date | 3 Dec 2003 16:30:58 -0800 |
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Followup to: <1070496272.8280.443.camel@plato.i.bork.org> By author: Martin Hicks <mort@wildopensource.com> In newsgroup: linux.dev.kernel > > If I boot a 2.6 kernel that first execs /sbin/kinit on the initramfs, > does some setup (mostly to find the real root filesystem), then > pivot_roots over to the real root filesystem and execs /sbin/init the > kernel spins inside check_mnt() while mounting /proc in the initscripts. >
The initramfs is the "real root" -- you shouldn't pivot_root from it, instead you should mount the new root on top of it.
This makes cleaning up a bit of an issue -- the proposed rootfs mount_single patch takes care of that -- but it can also be done by leaving a cleanup process with cwd inside the initramfs with would use relative paths to clean up.
Something like this:
mount / /dev/real_root_whatever ( rm -rf . ) & exec /sbin/init "$@"
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