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]
- 1 - Formatted: January 24, 2005 [ Back ]