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Full Discussion: Changing AIX LUN paths
Operating Systems AIX Changing AIX LUN paths Post 302994034 by MichaelFelt on Friday 17th of March 2017 05:21:27 PM
Old 03-17-2017
I use iSCSI with my VIOS. I then export those disks using vSCSI to the partitions.

As it is iSCSI - it is dependent on how your IP network connects.

Code:
iscsi0    192.168.90.53    3260 iqn.2004-04.com.qnap:ts-659:iscsi.x061.c806e6

My guess is that if you can change the IP network address from the 1GB network to the 4GB interface - just change those.

If that is a potential solution I, or someone else, can tell you how that can be done without taking anything "offline".

And, if you want to do it offline - it is not just taking all the filesystems offline (aka unmount) but also varyoffvg of the volume group, and then rmdev -l hdiskX (or rmdev -dl hdiskX).

And yes, if youvaryoffvg the volume group, you will probably use cfgmgr and varyonvg, and mount ... to bring everything online again.

So - what does the IP network look like?

My single 'link' to my NAS gives my 13 iscsi luns. An older, simpler, device had one lun per iscsi entry.

So, how the luns look|appear depend more on the device than on AIX - imho!

Hope this helps!
 

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hpfc(7D)							      Devices								  hpfc(7D)

NAME
hpfc - Agilent fibre channel host bus adapter SYNOPSIS
PCI pci103c DESCRIPTION
The hpfc fibre channel host bus adapter is a SCSA compliant nexus driver that supports all Agilent fibre channel host bus adapters, includ- ing the HHBA5100x, HHBA5101x, and HHBA5121x models. Agilent host bus adapters support the fibre channel protocol on private fibre channel arbitrated loops and fabrics. The driver supports up to ten host bus adapters, with a maximum of 125 fibre channel devices on each host bus adapter. The hpfc driver supports a maximum of 256 LUNs per target. The hpfc driver does not support the BIOS Int 13 feature, which enables the booting of an operating system. As a result, you should not install an operating system on devices attached to the hpfc driver. CONFIGURATION
The hpfc driver attempts to configure itself using the information in the /kernel/drv/hpfc.conf configuration file. By default, the driver supports only LUN 0 for each target device. To add multiple LUN support, modify the /kernel/drv/sd.conf file. Before upgrading the hpfc driver, backup the sd.conf file to save customized LUN settings and then use pkgrm(1M) to remove the old version of the driver. The host bus adapter port is initialized to FL_Port when connected to a fabric switch. To change it to F_Port, add the init_as_nport=1 entry to the hpfc.conf file and reboot the system. To conserve system resources, at least one disk drive must be attached to the hpfc driver. If no devices are attached, the driver will not load. FILES
/kernel/drv/hpfc 32-bit ELF kernel module /kernel/drv/sparcv9/hpfc 64-bit ELF kernel module /kernel/drv/hpfc.conf Driver configuration file /kernel/drv/sd.conf SCSI disk configuration file ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Architecture |x86, SPARC | +-----------------------------+-----------------------------+ SEE ALSO
luxadm(1M), pkgrm(1M), prtconf(1M), driver.conf(4), attributes(5), ses(7D), ssd(7D) ANSI X3.272-1996, Fibre Channel Arbitrated Loop (FC-AL), ANSI X3.269-1996, Fibre Channel Protocol for SCSI (FCP), ANSI X3.270-1996, SCSI-3 Architecture Model (SAM), Fibre Channel Private Loop SCSI Direct Attach (FC-PLDA) SunOS 5.10 10 Oct 2000 hpfc(7D)
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