HP XP10000, XP128 manual Setting the I/O timeout parameter, To change the I/O timeout parameter

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Setting the I/O timeout parameter

Set the I/O timeout value for each disk device to 30 seconds.

To change the I/O timeout parameter:

1. Verify the current I/O timeout value using the pvdisplay command:

Example # pvdisplay /dev/dsk/c0t6d0

This causes current values to be displayed:

--- Physical volumes ---
PV Name	/dev/dsk/c0t6d0
VG Name	/dev/vg06
PV Status	available
Allocatable	yes
VGDA	2
Cur LV	1
PE Size (Mbytes)	4
Total PE	586
Free PE	0	[OPEN-9]
Allocated PE	586	[OPEN-9]
Stale PE	0	[I/O timeout value]
IO Timeout (Seconds)	default	[I/O timeout value]

2.If the I/O timeout value is not 30, change the value to 30 using the pvchange -tcommand:

Example # pvchange -t 30 /dev/dsk/c0t6d0

This result is displayed:

Physical volume "/dev/dsk/c0t6d0" has been successfully changed.

Volume Group configuration for /dev/vg06 has been saved in /etc/lvmconf/vg06.cof

3.Verify that the new I/O timeout value is 30 seconds using the pvdisplay command:

Example # pvdisplay /dev/dsk/c0t6d0

Current values are now displayed, confirming that the new I/O timeout value is 30 seconds:

Installation

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Contents Sixth edition July Part number A5951-96015 XP128 XP1024 XP10000 XP12000Sixth edition July 2005 part number A5951-96015 Contents Troubleshooting Disk arrays About this guideIntended audience PrerequisitesContact HP Related documentationHP storage website HP sales and authorized resellersHP technical support Bold Document conventionsRevision history That USE of the Software is AT Your Sole RISK. HP Warranty statementAbout this guide Page Installation Features and requirements Fibre Channel interface Failover Device emulation typesRAID Manager command devices Snmp configurationInstallation procedures Setting the host mode for the disk array ports Install and configure the disk arrayPage Mode Level Description and Usage Software Setting the System Option ModesFibre Address Configuring the Fibre Channel portsFabric and Connection parameter settings Loading the OS and software Install and configure the hostInstalling and configuring the HBAs Clustering and fabric zoning SAN Defining the paths Connect the disk arrayPage Example Verifying HBA installationTo verify device recognition Verifying device recognitionCxtydz where Page Configure disk array devices Verifying the device files and drivers Claimed Busnexus Creating the device files # lsdev Character Block Driver Class 188 Sdisk Disk Example of a completed device data table To create the physical volumes Creating the physical volumesTo create volume groups Creating new volume groups# mknod /dev/vg06/group c 64 Vgda Lvextend Creating logical volumesTo create logical volumes LvremoveOPEN-L = To create file systems Creating the file systemsRepeat for each logical volume on the disk array To change the I/O timeout parameter Setting the I/O timeout parameterCreating the mount directories To create a mount directory for each logical volumeTo mount and verify the file systems Mounting and verifying the file systemsTo set up and verify the auto-mount parameters Setting and verifying the auto-mount parametersParameter Name Enter Page Troubleshooting Error conditions Newfs for example, /dev/vg01/r/vo/x Pvcreate for example, /dev/rdskWith vgcreate Host hangs or devices are Contact Information Calling the HP support centerPage Worksheets Path worksheet Disk array device emulations Supported emulations Luse Device type specificationsPage Disk array device emulations MPE Luse device parametersPhysical Max Extent Extent size Device type Size PE OPEN-8/9/E-CVS Scsi TID map for Fibre Channel adapters Value Reference information for SAM Configuring the devices using SAM Reference information for SAM To change the maximum number of volume groups Setting the maximum number of volume groups using SAMArray group Command ViewCommand View XP Command deviceFailover Host modeDisk controller unit Disk cabinet unit Emulation modesRemote console PC OPEN-xPath PortRemote Web Console Remote Control RCVolume Index Page Index