Veritas Volume Manager 5.0.1 Administrator's Guide, HP-UX 11i v3, First Edition, November 2009

List disk information
Menu: VolumeManager/Disk/ListDisk
VxVM INFO V-5-2-475 Use this menu operation to display a list of
disks. You can also choose to list detailed information about
the disk at a specific disk device address.
Enter disk device or "all" [<address>,all,q,?] (default: all)
■ If you enter all, VxVM displays the device name, disk name, group, and
status.
■ If you enter the address of the device for which you want information,
complete disk information (including the device name, the type of disk,
and information about the public and private areas of the disk) is displayed.
Once you have examined this information, press Return to return to the main
menu.
Controlling Powerfail Timeout
Powerfail Timeout is an attribute of a SCSI disk connected to an HP-UX host. This
is used to detect and handle I/O on non-responding disks.
See the pfto(7) man page.
VxVM uses this mechanism in its Powerfail Timeout (PFTO) feature. You can
specify a timeout value for individual VxVM disks using the vxdisk command. If
the PFTO setting for a disk I/O is enabled, the underlying driver returns an error
without retrying the I/O if the disk timer (PFTO) expires and the I/O does not
return from the disk.
You can set the PFTO values on a disk or set of disks within a disk group using
the CLI. PFTO helps in preventing system hangs due to non-responding disks.
By default, the use of PFTO is disabled in the HP-UX native multipathing devices.
In case of DMP devices, the use of PFTO is enabled. However, you can change the
PFTO settings.
To set PFTO value on a disk, use the following command:
$ vxdisk -g dg_name set disk_name pfto=value
For example, to set the PFTO value of 50sec on the disk c5t0d6:
$ vxdisk -g testdg set c5t0d6 pfto=50
To set the PFTO on a disk group, use the following command:
Administering disks
Controlling Powerfail Timeout
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