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Remove cow file early for non-persistent systems

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The kernel has an open file handle after setting up the mapping. We can
remove it early to make sure it is gone on shutdown.

This helps to keep the cow_device clean for non-persistent systems where
cow_directory contains a version specific string.

Signed-off-by: Christian Hesse <mail@eworm.de>
This commit is contained in:
Christian Hesse 2018-06-29 11:16:19 +02:00 committed by Gerardo Exequiel Pozzi
parent fd228a9a44
commit a00ba0f499
1 changed files with 4 additions and 0 deletions
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4
archiso/initcpio/hooks/archiso
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@ -33,6 +33,10 @@ _mnt_dmsnapshot() {
dmsetup create ${dm_snap_name} --table "0 ${ro_dev_size} snapshot ${ro_dev} ${rw_dev} ${cow_persistent} ${cow_chunksize}" dmsetup create ${dm_snap_name} --table "0 ${ro_dev_size} snapshot ${ro_dev} ${rw_dev} ${cow_persistent} ${cow_chunksize}"
if [[ "${cow_persistent}" != "P" ]]; then
rm -f "/run/archiso/cowspace/${cow_directory}/${img_name}.cow"
fi
_mnt_dev "/dev/mapper/${dm_snap_name}" "${newroot}${mnt}" "-w" "defaults" _mnt_dev "/dev/mapper/${dm_snap_name}" "${newroot}${mnt}" "-w" "defaults"
echo $(readlink -f /dev/mapper/${dm_snap_name}) >> /run/archiso/used_block_devices echo $(readlink -f /dev/mapper/${dm_snap_name}) >> /run/archiso/used_block_devices
} }