In a SAN environment, host connectivity led on the raid controller incorrectly glows amber intermittently when the Sun StorEdge[TM] 6120 array or san switch is power cycled

Asset ID:	1-72-1011057.1
Update Date:	2009-09-24
Keywords:

Solution Type Problem Resolution Sure

Solution 1011057.1 : In a SAN environment, host connectivity led on the raid controller incorrectly glows amber intermittently when the Sun StorEdge[TM] 6120 array or san switch is power cycled

Related Items


Sun Storage 6320 System
 Sun Storage 6020 Array
 Sun Storage 6120 Array

Related Categories


GCS>Sun Microsystems>Storage - Disk>Modular Disk - 6xxx Arrays

PreviouslyPublishedAs
215223

Symptoms

In some cases, when the Sun StorEdge[TM] 6120 array is power cycled or when the san switch connected to the 6120 controller is reset, the fibre channel link led on the controller comes up with amber light.
There will be no problem in the controller/frus and once the array comes up, the luns will be accessible by both controllers.
Fru stat returns healthy status for both the controllers as below:
fru stat
CTLR    STATUS   STATE       ROLE        PARTNER    TEMP
------  -------  ----------  ----------  -------    ----
u1ctr   ready    enabled     master      u2ctr      31
u2ctr   ready    enabled     alt master  u1ctr      30
port status also shows both the ports are online.
port list
port   targetid   addr_type   status   host   wwn
u1p1      1        hard       online   sun    20030003ba68ec17
u2p1      2        hard       online   sun    20030003ba68ebd4
PSPDSK01
port listmap shows proper ownership for both the controllers.
port listmap
port   targetid   addr_type   lun   volume	owner   access
u1p1      1        hard        0    T01R5V01      u1      primary
u1p1      1        hard        1    T01R5V01      u1      primary
u1p1      1        hard        4    T01R1V01      u1      primary
u1p1      1        hard        5    T01R1V01      u1      primary
u1p1      1        hard        2    T01R5V02      u2      failover
u1p1      1        hard        3    T01R5V02      u2      failover
u1p1      1        hard        6    T01R1V02      u2      failover
u1p1      1        hard        7    T01R1V02      u2      failover
u2p1      2        hard        0    T01R5V01      u1      failover
u2p1      2        hard        1    T01R5V01      u1      failover
u2p1      2        hard        4    T01R1V01      u1      failover
u2p1      2        hard        5    T01R1V01      u1      failover
u2p1      2        hard        2    T01R5V02      u2      primary
u2p1      2        hard        3    T01R5V02      u2      primary
u2p1      2        hard        6    T01R1V02      u2      primary
u2p1      2        hard        7    T01R1V02      u2      primary
PSPDSK01
All these outputs indicate there is as such no problem  in the controller.

Resolution

This problem has been intermittently observed in 6120 partner pair configurations attached to SAN. This problem is not observed if the controllers are directly connected to the hosts.
This can be rectified for the moment by disabling the controller with amber light, pulling out and re seating the controller.
Another method which has been to work fine is to force the fc_topology  mode to fabric_p2p as below:
sys fc_topology fabric_p2p.
After setting this parameter, the LED status is consistently green on resetting the controller or the san switch.

Relief/Workaround
None

Additional Information
None

Product
Sun StorageTek 6120/6320 Controller Firmware 3.2
Sun StorageTek 6320 System
Sun StorageTek 6120 Array
Sun StorageTek 6020 Array

6120, amber, T4, SAN, power cycle, fibre channel, host led
Previously Published As
82488

Change History
Date: 2005-09-13
User Name: 142418
Action: Add Comment
Comment: If an LED is incorrectly lit as this doc indicates, I would suggest that this needs to be a Bug report and not an Info Doc.
Version: 0
Date: 2005-08-30
User Name: 111868
Action: Approved
Comment: corrected the TM, publishing
Version: 3
Date: 2005-08-30
User Name: 111868
Action: Accept
Comment:
Version: 0
Date: 2005-08-30
User Name: 37842
Action: Approved
Comment: Updated associated product list.

Changed T4 (internal name) to 6120 in Resolution section.
Version: 0
Date: 2005-08-30
User Name: 37842
Action: Accept
Comment:
Version: 0
Date: 2005-08-30
User Name: 152614
Action: Approved
Comment: Hi,
This doc is on a problem i faced in field on 6120 array.
Kindly review the same.
Please revert back to me at madhan.kumar@sun.com with your feedback.

Thanks & regards,
Madhan Kumar
System Support Engineer
Version: 0
Date: 2005-08-30
User Name: 152614
Action: Created
Comment:
Version: 0
Product_uuid
3ad132b5-248c-11d9-8d5c-080020a9ed93|Sun StorageTek 6120/6320 Controller Firmware 3.2
4de60cc2-a08e-4610-b8bf-6a1881cb59c6|Sun StorageTek 6320 System
2cd2e7d2-2980-11d7-9c3f-c506fe37b7ef|Sun StorageTek 6120 Array
5475c17c-c204-11d7-9de1-080020a9ed93|Sun StorageTek 6020 Array

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