Changing AIX LUN paths


 
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Old 03-17-2017
Changing AIX LUN paths

Hello,

Looking for some guidance to changing how an AIX 6.1 server sees its luns. Presently they're connected via 1GB iscsi but I want to change it to 4GB fiber channel. Anyone done this before and if so is it an easy step?

I'm thinking this can be done in this order:
  1. unmount the filesystems
  2. varyoffvg vg
  3. make the changes on the storage system (EMC)
  4. cfgmgr
  5. varyonvg vg
  6. mount the filesystems

I've never done this before so I'm hoping its that simple but IBM is never that simple.

Any help is much appreciated.

Last edited by rbatte1; 03-17-2017 at 12:32 PM.. Reason: Changed textual numbered list to formatted numbered list with LIST=1 tags
 
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ISCSI_INITIATOR(4)					   BSD Kernel Interfaces Manual 					ISCSI_INITIATOR(4)

NAME
iscsi_initiator -- kernel driver for the iSCSI protocol SYNOPSIS
To compile this driver into the kernel, place the following lines in your kernel configuration file: device iscsi_initiator Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5): iscsi_initiator_load="YES" DESCRIPTION
This driver, along with its userspace counterpart iscontrol(8), is obsolete. Users are advised to use iscsi(4) instead. The iscsi_initiator implements the kernel side of the Internet SCSI (iSCSI) network protocol standard, the user land companion is iscontrol(8), and permits access to remote virtual SCSI devices via cam(4). SYSCTL VARIABLES
debug.iscsi_initiator set the debug-level, 0 means no debugging, 9 for maximum. net.iscsi.isid the initiator part of the Session Identifier. kern.cam.cam_srch_hi=1 allow search above LUN 7 for SCSI3 and greater devices. the following are informative only: net.iscsi.driver_version the current version of the driver. net.iscsi.sessions the number of current active sessions. net.iscsi.n.targetname is the targe name of session n. net.iscsi.n.targeaddress is the IP address of the target of session n. net.iscsi.n.stats are some statistics for session n net.iscsi.n.pid is the process id of the userland side of session n, see iscontrol(8). FILES
The iscsi_initiator driver creates the following: /dev/iscsi used to create new sessions. /dev/iscsi%d for each new session. SEE ALSO
cam(4), camcontrol(8), iscontrol(8) STANDARDS
iSCSI RFC 3720 AUTHORS
This software was written by Daniel Braniss <danny@cs.huji.ac.il> BUGS
The lun discovery method is old-fashioned. BSD
October 9, 2014 BSD