Description

dptmgr reports that a disk has failed and the LSU is degraded.

/var/adm/messages reports:

Mar 19 08:25:13 lcbcp for device (1, 2, 1, 0) at Mon Mar 18 21:10:42 2002.

Mar 19 08:25:13 lcbcp dptelog: [ID 915952 daemon.notice] HBA: 1 reports

controller error (Selection Timeout [10], 0)

Solution section

Run the command dptutil -L all

# dptutil -L all

Address Type Manufacturer/Model Capacity Status

---------------------------------------------------------------------------

c3t0d0 Disk Drive (DASD) SEAGATE ST336704LSUN36G 34732MB Optimal

c3t1d0 Disk Drive (DASD) SEAGATE ST336704LSUN36G 34732MB Optimal

c5t0d0 Disk Drive (DASD) SEAGATE ST336704LSUN36G 34731MB Optimal

c5t1d0 Disk Drive (DASD) SEAGATE ST336704LSUN36G 34731MB Optimal

c5t2d0 Disk Drive (DASD) SEAGATE ST336704LSUN36G 34731MB Optimal

c5t3d0 Disk Drive (DASD) SEAGATE ST336704LSUN36G 34731MB Optimal

d1b2t0d0 Disk Drive (DASD) SEAGATE ST336704LSUN36G 34731MB Optimal

d1b2t2d0 Disk Drive (DASD) SEAGATE ST336704LSUN36G 34731MB Optimal

d1b2t3d0 Disk Drive (DASD) SEAGATE ST336704LSUN36G 34731MB Optimal

# b0 b1 b2 Controller Cache FW NVRAM Serial Status

---------------------------------------------------------------------------

d0 -- c3 -- DPT PM3755U2B 64MB SMEA SUN V1.5 12-021264 Optimal

d1 -- c5 -- DPT PM3755U2B 64MB SMEA SUN V1.5 12-026035 Alarm On

Address Type Manufacturer/Model Capacity Status

---------------------------------------------------------------------------

c5t0d0 RAID 0 (Striped) DPT C5T0D0 208390MB Degraded

c5t0d0 RAID 5 (Redundant DPT RAID-5 104195MB Optimal

c5t0d0 Disk Drive (DASD) SEAGATE ST336704LSUN36G 34731MB Optimal

c5t1d0 Disk Drive (DASD) SEAGATE ST336704LSUN36G 34731MB Optimal

c5t2d0 Disk Drive (DASD) SEAGATE ST336704LSUN36G 34731MB Optimal

c5t3d0 Disk Drive (DASD) SEAGATE ST336704LSUN36G 34731MB Optimal

d1b2t0d0 RAID 5 (Redundant DPT RAID-5 104195MB Degraded

d1b2t0d0 Disk Drive (DASD) SEAGATE ST336704LSUN36G 34731MB Optimal

d1b2t1d0 Disk Drive (DASD) DPT --UNKNOWN-- 0MB Missing

d1b2t2d0 Disk Drive (DASD) SEAGATE ST336704LSUN36G 34731MB Optimal

d1b2t3d0 Disk Drive (DASD) SEAGATE ST336704LSUN36G 34731MB Optimal

The above shows that there is a LSU c5t0d0 that contains two raid 5 units striped together

* Are any lights not green on the any of the disks?

* Do a format analyze read on c5t0d0?

Which disk does not blink that is part of the LSU? This works best if you know exactly what disks were selected to be part of the LSU.

We know the failed disk is d1b2t1d0

d1 indicates the raid card d1

b2 indicates which one of the three buses on that card that the disk is accessed through

b0

____________________

b1 b2

* t1 is the target on that bus

* d0 is the lun 0

If we look at a E450 chassis we see 20 drive slots starting at 0 at bottom left to top right 19.

There is a repeating pattern for the target number (0, 1, 2, 3). . From info above we know the target number is 1. So it could be any of the disks with * next to them.

The format analyze read did not yield the desired info since all 8 disk in cx blinked. And we could not remember which 9th disk we included in in the LSU. What else can we do?

Last resort: Take the E450 apart and card following the cabling from raid card 1 and bus to the drives.

-----------------

cy 2 (18) | (19) 3

0 (16) | (17) 1*

2 (14) | (15) 3

0 (12) | (13) 1*

-----------------

cx 2 (10) | (11) 3

0 (8) | (9) 1*

2 (6) | (7) 3

0 (4) | (5) 1*

-----------------------

c0 2 (2) | (3) 3

0 (0) | (1) 1

Internal Section

Public SRDBs, on occasion, may require Sun-internal information to be included. This section is designated for including such information as:

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