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 pfto(7)                     Volume Manager 3.5                      pfto(7)
                                 1 Jun 2002

 NAME    [Toc]    [Back]
      pfto - Powerfail Timeout

 DESCRIPTION    [Toc]    [Back]
      HP-UX SCSI disk device drivers have a timeout facility that detects
      non-responding disks.  VxVM uses this mechanism in its Powerfail
      Timeout (pfto) feature.  You can specify a timeout value for
      individual VxVM disks using the vxdisk command (see the EXAMPLES
      section below).  If a disk fails to respond in the specified timeout
      period, the driver receives a timer interrupt.

      pfto values are persistent across reboots, that is, after the pfto
      value is set, it remains in effect until you explicitly change it.  If
      dynamic multipathing is enabled, the pfto value set on a disk applies
      to each path of a multipath disk device.

      The pfto value is in seconds. If pfto is not specified, or is zero,
      the timeout period is 30 seconds.  Both the vxdisk and vxprint
      commands display the current pfto value for a disk.

 EXAMPLES    [Toc]    [Back]
      Use the following command to set the value of pfto to 30 seconds on

           vxdisk set disk01 pfto=30

      Use either of the following commands to display the pfto value on the
      VxVM disk disk01:

           vxdisk list disk01

           vxprint -l disk01

 EXIT CODES    [Toc]    [Back]
      Setting the pfto value on a non-VxVM disk returns an error.

 SEE ALSO    [Toc]    [Back]
      vxdisk(1M), vxprint(1M)

                                    - 1 -       Formatted:  January 24, 2005
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