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Operating Systems AIX SAN Disk Appearing double in AIX Post 302843716 by filosophizer on Wednesday 14th of August 2013 02:29:54 PM
Old 08-14-2013
SAN Disk Appearing double in AIX

Hello Folks,

I have directly connected my IBM Pseries AIX machine to SAN Storage

I have a dual port Fibre Channel Adapter
Connected both fiber ports to SAN Box IBM DS4500 Controller A & Controller B

Using IBM DS storage manager client 10 -- created one logical disk and assigned to a default group

on my AIX machine

Code:
# oslevel -s
6100-05-00-0000

# lsdev -Cc disk
hdisk8 Available 0A-08-02     MPIO Other DS4K Array Disk
hdisk9 Available 0A-08-02     MPIO Other DS4K Array Disk

# lsdev -Cc adapter

fcs0      Available 0A-08 FC Adapter
fcs1      Available 0A-09 FC Adapter

I see two disks in my AIX machine HDISK8 and HDISK9 is same disk but appearing twice . I have disconnected one cable from the controller , deleted hdisk9 and ran cfgmgr , I don't see hdisk9


Do I need to have SAN Switch inorder for it to appear only once or is there any other configuration which I am missing.... ?

THanks.
 

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socal(7D)							      Devices								 socal(7D)

NAME
socal - Serial Optical Controller for Fibre Channel Arbitrated Loop (SOC+) device driver SYNOPSIS
socal@sbus-slot,0 DESCRIPTION
The Fibre Channel Host Bus Adapter is an SBus card which implements two full duplex Fibre Channel interfaces. Each Fibre Channel interface can connect to a Fibre Channel Arbitrated Loop (FC-AL). The socal device driver is a nexus driver and implements portions of the FC-2 and FC-4 layers of FC-AL. FILES
/kernel/drv/socal ELF Kernel Module ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Architecture |SPARC | +-----------------------------+-----------------------------+ SEE ALSO
sbus(4), sf(7D), ssd(7D) Writing Device Drivers ANSI X3.230-1994, Fibre Channel Physical and Signalling Interface (FC-PH) ANSI X3.272-1996, Fibre Channel Arbitrated Loop (FC-AL) Fibre Channel Private Loop SCSI Direct Attach (FC-PLDA) DIAGNOSTICS
The messages described below may appear on system console in addition to being logged. On the console, these messages are preceded by: socal%d: port %a where %d is the instance number of the socal controller and %a is the port on the host adapter. Fibre Channel Loop is ONLINE The Fibre Channel loop is now online. Fibre Channel Loop is OFFLINE The Fibre Channel loop is now offline. attach failed: device in slave-only slot. Move soc+ card to another slot. attach failed: bad soft state. Driver did not attach, devices will be inaccessible. attach failed: unable to alloc xport struct. Driver did not attach, devices will be inaccessible. attach failed: unable to map eeprom Driver was unable to map device memory; check for bad hardware. Driver did not attach to device, devices will be inaccessible. attach failed: unable to map XRAM Driver was unable to map device memory; check for bad hardware. Driver did not attach to device, devices will be inaccessible. attach failed: unable to map registers Driver was unable to map device registers; check for bad hardware. Driver did not attach to device, devices will be inaccessible. attach failed: unable to access status register Driver was unable to map device registers; check for bad hardware. Driver did not attach to device, devices will be inaccessible. attach failed: unable to install interrupt handler Driver was not able to add the interrupt routine to the kernel. Driver did not attach to device, devices will be inaccessible. attach failed: unable to access host adapter XRAM Driver was unable to access device RAM; check for bad hardware. Driver did not attach to device, devices will be inaccessible. attach failed: unable to write host adapter XRAM Driver was unable to write device RAM; check for bad hardware. Driver did not attach to device, devices will be inaccessible. attach failed: read/write mismatch in XRAM Driver was unable to verify device RAM; check for bad hardware. Driver did not attach to device, devices will be inaccessible. SunOS 5.11 9 May 1997 socal(7D)
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