where the data blocks are copied only when modified.
If this is not possible, the copy fails.
-=item B<vol-delete> [I<--pool> I<pool-or-uuid>] I<vol-name-or-key-or-path>
+=item B<vol-delete> I<vol-name-or-key-or-path> [I<--pool> I<pool-or-uuid>]
[I<--delete-snapshots>]
Delete a given volume.
-I<--pool> I<pool-or-uuid> is the name or UUID of the storage pool the volume
-is in.
-I<vol-name-or-key-or-path> is the name or key or path of the volume to delete.
+
+I<vol-name-or-key-or-path> is the volume name or key or path of the volume
+to delete.
+
+[I<--pool> I<pool-or-uuid>] is the name or UUID of the storage pool the volume
+is in. If the volume name is provided instead of the key or path, then
+providing the pool is necessary to find the volume to be deleted; otherwise,
+the first volume found by the key or path will be used.
The I<--delete-snapshots> flag specifies that any snapshots associated with
the storage volume should be deleted as well. Not all storage drivers