Synnefo » snf-ganeti » ganeti-local

      <para>

        To provide the user with an estimate on how long the export will take,

        a predicted size can be written to the file descriptor passed in the

        variable <envar>EXP_SIZE_FD</envar>. The value is in bytes and must be

        terminated by a newline character (\n). Older versions of Ganeti don't

        support this feature, hence the variable should be checked before use.

        Example: <screen>

if test -n "$EXP_SIZE_FD"; then

  blockdev --getsize64 $blockdev >&$EXP_SIZE_FD

fi

</screen>

      </para>