admin-scripts/backup
1
0
Fork 0
Code Issues Pull Requests Releases Activity

fixed option -p; better infos on dry run

Browse Source
This commit is contained in:
Marc Wäckerlin
2017-10-06 16:09:19 +02:00
parent 33eb0a20d1
commit bf2a4e8415
1 changed files with 26 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files

40
btrfs-snapshots.sh
View File

@@ -49,34 +49,46 @@ EOF
fi
shift
done
BTRFS_VOLUMES=${BTRFS_VOLUMES:-$(awk '!/^#/ && $3=="btrfs" {print $2}' /etc/fstab)}
TMP_MNT=${TMP_MNT:-/var/tmp/btrfs-backup}
if test -n "${vols[*]}"; then
BTRFS_VOLUMES="${vols[*]}"
fi
test -d "${TMP_MNT}" || mkdir -p "${TMP_MNT}"
for fs in ${BTRFS_VOLUMES}; do
device=$(mount | awk '$3=="'$fs'" && $5=="btrfs" {print $1}')
subvol=$(mount | awk '$3=="'$fs'" && $5=="btrfs" {split(substr($6, 2, length($6)-2), res, ","); for (r in res) {if (res[r]~/^subvol=/) {sub(/^subvol=/,"" , res[r]); print res[r]}}}')
if test -n "$subvol"; then
name=${subvol}
if test "$subvol" = "/@"; then
name=${subvol}
else
name=${subvol}-
fi
else
if test "$fs" = "/"; then
name="@root"
name="/"
else
name=${fs#/}
name=${name%/}
name=${name//\//-}
name=/${name//\//-}-
fi
fi
target="${name}-snapshot-$(date +%Y-%m-%d-%H-%M)"
if test $dryrun -eq 1; then
echo btrfs subvolume snapshot "${TMP_MNT}${subvol}" "${TMP_MNT}/${target}"
else
if mount | grep -q " on $TMP_MNT type "; then
target="${name}snapshot-$(date +%Y-%m-%d-%H-%M)"
if test -n "$device"; then
if test $dryrun -eq 1; then
echo -e "→ \e[1mbackup ${subvol:+subvol $subvol of }$fs on $device\e[0m"
echo " " mount "$device" "$TMP_MNT"
echo " " btrfs subvolume snapshot "${TMP_MNT}${subvol}" "${TMP_MNT}${target}"
echo " " umount "$TMP_MNT"
else
if mount | grep -q " on $TMP_MNT type "; then
sudo umount "$TMP_MNT"
fi
sudo mount "$device" "$TMP_MNT"
sudo btrfs subvolume snapshot "${TMP_MNT}${subvol}" "${TMP_MNT}${target}"
sudo umount "$TMP_MNT"
fi
sudo mount "$device" "$TMP_MNT"
sudo btrfs subvolume snapshot "${TMP_MNT}${subvol}" "${TMP_MNT}/${target}"
sudo umount "$TMP_MNT"
else
echo "ERROR: no device found for $fs" 1>&2
exit 2
fi
done