Hi, I tried to install the packages on a freshly installed Debian 8
(jessie) system.  It failed with the following error:

  # apt-get install vdsm
  ...
  Setting up vdsm (4.17.11-1) ...
  Usage: /usr/bin/vdsm-tool [options] <action> [arguments]
  Valid options:
  ...

The offending command in vdsm.postinst script is:

  ...
  + vdsm-tool load-needed-modules
  Usage: /usr/bin/vdsm-tool [options] <action> [arguments]
  ...

When run manually, vdsm-tool doesn't seem to accept any action, e.g.:

  # vdsm-tool configure
  Usage: /usr/bin/vdsm-tool [options] <action> [arguments]
  Valid options:
    -h, --help
                  Show this help menu.
    -l, --logfile <path>
                  Redirect logging to file.
    -v, --verbose
                  Include warning (and errors) messages in log.
    -vv, --vverbose
                  Include information (and above) messages in log.
    -vvv, --vvverbose
                  Include debug (and above) messages in log.
    -a, --append
                  Append to logfile instead of truncating it
  (if logging to a file).

Note there are no vdsm-tool commands listed in the help output.
And load-needed-modules action looks strange, I couldn't find it
anywhere except the postinst script.