## Back up the filesystems on the currently selected host using the
## currently selected snapshot type.
+ ## Make sure that there's a store volume. We must do this here rather than
+ ## in the main body of the script, since the configuration file needs a
+ ## chance to override STOREDIR.
+ if ! [ -r $STOREDIR/.rsync-backup-store ]; then
+ echo >&2 "$quis: no backup volume mounted"
+ exit 15
+ fi
+
+ ## Back up each requested file system in turn.
for fs in "$@"; do
## Parse the argument.