Identify SAN disks not in use Post: 302526356

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Operating Systems Linux Red Hat Identify SAN disks not in use Post 302526356 by asanchez on Tuesday 31st of May 2011 09:53:39 AM

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05-31-2011

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Well, we're managing around 1200 servers with a variety of unix-like OS (rhel, suse, centos, ibm aix, sunos and hp-ux).

And there are some with LVM, some with VxVM and some with none (fs's mounted directly to fdisk /dev/sdX partitions).

There is also multipathing with some systems.

To not make it more difficult, I'm trying to resolve it first in the RHEL case (LVM, VxVM and none).

Last edited by asanchez; 05-31-2011 at 11:07 AM..

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LEARN ABOUT HPUX

pfto

pfto(7) 						 Miscellaneous Information Manual						   pfto(7)

NAME

       pfto - Powerfail Timeout

DESCRIPTION

       HP-UX  SCSI disk device drivers have a timeout facility that detects non-responding disks.  VxVM uses this mechanism in its Powerfail Time-
       out (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

       Use the following command to set the value of pfto to 30 seconds on disk01:

	      vxdisk -g rootdg 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

       Setting the pfto value on a non-VxVM disk returns an error.

SEE ALSO

       vxdisk(1M), vxprint(1M)

VxVM 5.0.31.1							    24 Mar 2008 							   pfto(7)