Created Freitag 08 Januar 2021
UrBackup doesn't backup unmounted BTRFS subvolumes even if they are defined as backup targets.
The following describes what to do to backup unmounted subvolumes.
Client changes
Insert the following code to /usr/local/share/urbackup/btrfs_create_filesystem_snapshot on the backup client to create snapshot at a relative path similar to the originals location (Src):
if [[ $TYPE == "btrfs" ]]
then
... # Insert after
# CUSTOM - This creates only one snapshot to backup one subvolume
if [[ $SNAP_MOUNTPOINT != $SNAP_ORIG_PATH ]]; then
if [ 256 -eq $(stat --format=%i $SNAP_ORIG_PATH) ]; then
SNAP_DEST="$SNAP_MOUNTPOINT/.urbackup_snaps/$SNAP_ID"
mkdir -p $SNAP_DEST$(dirname $SNAP_ORIG_PATH)
btrfs subvolume snapshot -r "$SNAP_ORIG_PATH" "$SNAP_DEST$SNAP_ORIG_PATH"
echo "SNAPSHOT=$SNAP_DEST"
exit 0
fi
fi
# CUSTOM - END
... # Insert before
mkdir -p "$SNAP_MOUNTPOINT/.urbackup_snaps"
...
Insert the following code /usr/local/share/urbackup/btrfs_remove_filesystem_snapshot on the backup client to remove the special subvolume snapshot after backup (Src):
if [[ $TYPE == "btrfs" ]]
then
... # Insert after
# CUSTOM - This creates only one snapshot to backup one subvolume
if [[ $SNAP_DEST == *$SNAP_NAME* ]]; then
if [ 256 -eq $(stat --format=%i $SNAP_ORIG_PATH) ]; then
btrfs subvolume delete "$SNAP_DEST"
rm -Rf "$SNAP_MOUNTPOINT"
exit 0
fi
fi
# CUSTOM - END
... # Insert before
btrfs subvolume delete "$SNAP_MOUNTPOINT"
Server web interface
Optionally create a vitual client if you want to also backup a subvolume besides normal directories in mounted volumes.
Specify the path to the subvolume (only one) in the client settings Default directories to backup. UrBackup only creates one snapshot per mounted volume.