diff options
| author | Gerardo Exequiel Pozzi <vmlinuz386@yahoo.com.ar> | 2011-10-23 21:24:18 -0300 |
|---|---|---|
| committer | Gerardo Exequiel Pozzi <vmlinuz386@yahoo.com.ar> | 2011-10-23 21:24:18 -0300 |
| commit | 59ad1113d9ba60153f0c056711856e7440cc20bb (patch) | |
| tree | d159fefbfd91c120255f3d53853298a9a773e4a4 /archiso/archiso_shutdown | |
| parent | 908551ef02771d370436b44c42db2c32a74e4a88 (diff) | |
[archiso] Add archiso_shutdown hook.
STATUS: Working (std boot, loop_mnt, pxe) with copytoram=[y|n].
NEEDS: initscript > 2011.07.3, mkinitcpio > 0.7.2, mkinitcpio-busybox > 1.18.5-1
Purpose: we need this for propertly unmount $cow_device,
used for persistent dm-snapshot devices.
This hook is based on work from Tom Gundersen[#1],
but adapted for archiso things (specially the shutdown script)
[#1] http://mailman.archlinux.org/pipermail/arch-projects/2011-July/001549.html
[#2] http://projects.archlinux.org/initscripts.git/commit/?id=1fa7b4b453e96533ae1db3630031285e5fc302b3
[#3] http://mailman.archlinux.org/pipermail/arch-projects/2011-August/001749.html
Signed-off-by: Gerardo Exequiel Pozzi <vmlinuz386@yahoo.com.ar>
Diffstat (limited to 'archiso/archiso_shutdown')
| -rw-r--r-- | archiso/archiso_shutdown | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/archiso/archiso_shutdown b/archiso/archiso_shutdown new file mode 100644 index 0000000..de1197e --- /dev/null +++ b/archiso/archiso_shutdown @@ -0,0 +1,43 @@ +#!/bin/sh + +# /oldroot depends on things inside /oldroot/run/archiso... +mkdir /oldrun +mount --move /oldroot/run /oldrun + +# Unmount all mounts now. +umount $(mount | awk '$3 ~/^\/oldroot/ {print $3}' | sort -r) + +# Remove all dm-snapshot devices. +dmsetup remove_all + +# Remove all loopback devices made for dm-snapshots devices +# other misc loops like used for pure squashfs images +# and unmount/detach *.fs.sfs images. +for _lup in $(ls -r /dev/loop[1-9][0-9][0-9]); do + if ! losetup -d ${_lup} 2> /dev/null; then + umount -d ${_lup} + fi +done + +# Unmount the space used to store *.cow. +umount /oldrun/archiso/cowspace + +# Unmount boot device if needed (no copytoram=y used) +if [[ ! -d /oldrun/archiso/copytoram ]]; then + umount /oldrun/archiso/bootmnt + # Detach img_loop= and unmount img_dev= (archiso_loop_mnt hook) + if [[ -f /oldrun/archiso/img_dev_loop ]]; then + losetup -d $(cat /oldrun/archiso/img_dev_loop) + umount /oldrun/archiso/img_dev + fi + if [[ -f /oldrun/archiso/nbd_client.pid ]]; then + nbd-client -d /dev/nbd0 + fi +fi + +# reboot / poweroff / halt, depending on the argument passed by init +# if something invalid is passed, we halt +case "$1" in + reboot|poweroff|halt) "$1" -f ;; + *) halt -f;; +esac |