HPUX STORAGE


 * If you loose SAN connectivity, to recover try :
 * ioscan -fnC Disk <-- Scans for disk devices
 * insf -e  <--  With the -e option, insf reinstalls the special files for pseudo drivers and existing devices.  This is useful for restoring special files when one or more have been removed.
 * VGCHANGE commands:
 * vgchange -a y  <-- To Activate group
 * vgchange -a r  <-- to Activate readonly
 * vgchante -a n  <-- To Deactivate group
 * from HERE:

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==== Device Management

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==== HP-UX is a hardware path based operating system. When it boots up it does a hardware detection. It then compares the hardware that it detects with the hardware that is listed in /etc/ioconfig. If new hardware is detected, it is assigned the next available configuration information in the proper hardware path.

rmsf - remove special files insf - install special files

insf -C disk -e  <-- This command will re-install all of the device files for the class "disk"

lsdev  <-- Lists devices and drivers in the system

ioscan  <-- searches for all devices and displays their hardware path ioscan -fnC disk <-- searches for all devices of  class (C) disk ioscan -fnH  <-- searches for a LUN

last 2 digits of hardware path in the LUN in octal (1/12/0/0.1.23)

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======== Fibre Channel Devices

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======== ioscan -fknC fc <-- Lists fibre channel adapters.

To identify the devices:

ls -l /dev/fc*

fcmsutil - utility for fibre channel operations fcmsutil /dev/

Procedure to run fcmsutil on a fibre channel: ioscan -fnC disk|more  --> Identify hw path of fibre channel adapter ioscan -fnH 1/0/0/0 -->  Identify device of fibre channel adapter or ls /dev/fc* on older adapters (arbitrated loop) fcmsutil /dev/fcms2 stat -->  fcmsutil that shows status of fibre channel adapter