ds4800, AIX5.3

[ogniemi]

I can access disks over SAN (without any problem), but everytime during system boot the following error appeares (only once):


---------------------------------------------------------------------------
LABEL: FCP_ARRAY_ERR6
IDENTIFIER: B9735AF4

Date/Time: Thu Jan 5 13:49:17 CUT 2006
Sequence Number: 483
Machine Id: 00CC4BCD3C00
Node Id: sboot
Class: H
Type: PERM
Resource Name: dac0
Resource Class: array
Resource Type: ibm-dac-V4
Location: U7879.001.DQDVWBB-P1-C6-T1-W201301A0B8134567
VPD:
Manufacturer................IBM
Machine Type and Model......1815 FAStT
Part Number.................16189-04
ROS Level and ID............0914

Description
SUBSYSTEM COMPONENT FAILURE

Probable Causes
ARRAY DASD MEDIA
POWER OR FAN COMPONENT

Failure Causes
ARRAY DASD MEDIA
POWER OR FAN COMPONENT

Recommended Actions
PERFORM PROBLEM DETERMINATION PROCEDURES

Detail Data
SENSE DATA
0600 0308 0000 FF00 0000 0004 0000 0000 0000 0000 0000 0000 0000 0000 7000 0600
0000 0098 0000 0000 3FC7 0600 0000 0000 0000 0000 0000 D549 0000 0000 0000 0000
0008 0D00 0000 0000 0000 0000 0000 0000 0000 3154 3532 3636 3839 3831 2020 2020
2020 0615 1500 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
0001 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
0000 0000 0093 AAB0 3031 3035 3036 2F30 3834 3130 3100 0000 0000 0000 0000 0000
0000 0000 2041 3000 F705 3207 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
0000 0000
---------------------------------------------------------------------------

On the console there is an information:

"A degradation condition has been detected on device dac0
Either the disk has become degraded or the disk controller has detected an error."

The system verification and problem determination using "diag" result is: "No troubles were found"

Any idea? There are also no errors on DS4800 or SAN switches.


thx,!

 

[harleygeek]

How about power & fan?

 

[ogniemi]

power and fun is ok. as I told diag says all is ok.

besides, the same box (p570) has also the other lpars which doesn't report such problem

 

[21sam]

Recently i had the same kind of problem. i am sure the fiber channel switch path is misconfigured... may zones and zone sets related..
if possible try to exportvg and rmdev all the devices that belongs to DS4800 and then run cfgmgr.

#fget_config -Av

run the above command on LPAR and check the number of dar and dac devices.

you should see 2 dacs under each dar. if not you need to reconfigure the FC switch...

 

[ogniemi]

on the system/lpar the problem is reported during boot the command you wrote says:

# fget_config -Av

---dar0---

User array name = '01_DS4800'
dac0 ACTIVE dac1 ACTIVE

Disk DAC LUN Logical Drive
utm 31
hdisk0 dac0 0 system_d
hdisk1 dac1 1 db_d1
hdisk2 dac0 2 db_d2
hdisk3 dac0 3 fc_d1
hdisk4 dac1 4 fc_d2