--t *datafile*, --text-data=*datafile*
- The name of the file holding cluster information, to override the
- data in the JSON request itself. This is mostly used for debugging.
+-t *datafile*, \--text-data=*datafile*
+ The name of the file holding cluster information, to override the data
+ in the JSON request itself. This is mostly used for debugging. The
+ format of the file is described in the man page **htools**(1).
+
+\--simulate *description*
+ Backend specification: similar to the **-t** option, this allows
+ overriding the cluster data with a simulated cluster. For details
+ about the description, see the man page **htools**(1).
+
+-S *filename*, \--save-cluster=*filename*
+ If given, the state of the cluster before and the iallocator run is
+ saved to a file named *filename.pre-ialloc*, respectively
+ *filename.post-ialloc*. This allows re-feeding the cluster state to
+ any of the htools utilities via the ``-t`` option.
+
+-v
+ This option increases verbosity and can be used for debugging in order
+ to understand how the IAllocator request is parsed; it can be passed
+ multiple times for successively more information.