Solaris Reports ASC: 0x29 ASCQ: 0x0 When Sun Storage 6130 Array Is Attached to Host

Asset ID:	1-72-1007892.1
Update Date:	2018-01-08
Keywords:

Solution Type Problem Resolution Sure

Solution 1007892.1 : Solaris Reports ASC: 0x29 ASCQ: 0x0 When Sun Storage 6130 Array Is Attached to Host

Applies to:

Sun Storage 6130 Array - Version All Versions and later
All Platforms

Symptoms

Users see the following messages either logged to the console, or logged into /var/adm/messages:

Jan 18 12:45:22 myhost Error for Command: write(10) Error Level: Retryable
Jan 18 12:45:22 myhost scsi: [ID 107833 kern.notice] Requested Block: 38 Error Block: 38
Jan 18 12:45:22 myhost scsi: [ID 107833 kern.notice] Vendor: SUN Serial Number:
Jan 18 12:45:22 myhost scsi: [ID 107833 kern.notice] Sense Key: Unit Attention
Jan 18 12:45:22 myhost scsi: [ID 107833 kern.notice] ASC: 0x29 (power on, reset, or bus reset occurred), ASCQ: 0x0, FRU: 0x1

Cause

These messages when attached to the Sun StorEdge 6130 represent a request, external to the array, by another object on the Fibre Channel SCSI bus. The message is reported as the outstanding read, write, or other operation (in this case write), was interrupted by this bus reset. The array is alerting the host driver that the operation must be retried, due to this circumstance.

The causes of this message are typically:

Host power on or boot cycle
Fibre Channel Segment failure

Solution

These messages are harmless as long as the IO request does not return an Error Level: Fatal. However if you suspect a problem, it is advisable to review the hosts that have access to the array, and review whether either of the above conditions has been met.

Previously Published As
83700

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