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added basic snapshot management....

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Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>
This commit is contained in:
Alex A. Naanou 2025-02-02 18:18:27 +03:00
parent 5e695db2a3
commit d6abf65df9
1 changed files with 21 additions and 9 deletions
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30
Archive/snapshot.sh
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@ -19,6 +19,7 @@
SNAPSHOT_DIR=.snapshots SNAPSHOT_DIR=.snapshots
SUBVOLUME_DIR=media SUBVOLUME_DIR=media
SNAPSHOT_COUNT=5
# run in script dir (not cwd)... # run in script dir (not cwd)...
@ -33,13 +34,6 @@ if ! btrfs filesystem usage . > /dev/null 2>&1 ; then
exit exit
fi fi
createTree(){
mkdir -p ./media/img/my/work/
# XXX copy scritps...
}
#SNAPSHOT_COUNT=
# create ./media... # create ./media...
@ -63,12 +57,30 @@ mkdir -p "$SNAPSHOT_DIR"
# XXX should this be more human readable??? # XXX should this be more human readable???
# ...a date + number maybe??? # ...a date + number maybe???
SNAPSHOT=$(( SNAPSHOT=$((
$( ls "$SNAPSHOT_DIR" \ $( ls "$SNAPSHOT_DIR/" \
| sort -n \ | sort -n \
| tail -n 1 ) \ | tail -n 1 ) \
+ 1 )) + 1 ))
btrfs subvolume snapshot -r "$SUBVOLUME_DIR" "${SNAPSHOT_DIR}/${SNAPSHOT}" #btrfs subvolume snapshot -r "$SUBVOLUME_DIR" "${SNAPSHOT_DIR}/${SNAPSHOT}"
btrfs subvolume snapshot "$SUBVOLUME_DIR" "${SNAPSHOT_DIR}/${SNAPSHOT}"
if [[ $SNAPSHOT_COUNT =~ [0-9]* ]] \
&& [ "$SNAPSHOT_COUNT" != 0 ] ; then
SNAPSHOTS=($(\
ls "$SNAPSHOT_DIR/" \
| sort -n ))
remove=$(( ${#SNAPSHOTS[@]} - $SNAPSHOT_COUNT - 1 ))
while (( $remove >= 0 )) ; do
# XXX can we avoid sudo here???
# XXX is 'btrfs subvolume delete ...' the same as 'rm -rf ..'
#sudo btrfs subvolume delete -c ${SNAPSHOT_DIR}/${SNAPSHOTS[$remove]}
echo Removing snapshot: ${SNAPSHOT_DIR}/${SNAPSHOTS[$remove]}
rm -rf ${SNAPSHOT_DIR}/${SNAPSHOTS[$remove]}
remove=$(( $remove - 1 ))
done
fi