Asset ID:	1-77-1019966.1
Update Date:	2011-02-23
Keywords:

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Solution Type  Sun Alert Sure

Solution  1019966.1 :   Sun StorageTek 6140 Arrays May Cause Servers to Lose Access to Data due to SCSI Timeouts  


PreviouslyPublishedAs
249946

Bug Id
<SUNBUG: 6643794>

Product
Sun StorageTek 6140 Array

Date of Resolved Release
16-Jan-2009

Sun Storagetek 6140 arrays may cause servers to lose access to data due to SCSI timeouts:

1. Impact

Heavy read I/O on a Sun StorageTek 6140 may cause an initiator to abort all running I/O to the array, causing a host to time out on pending requests. This can result in a loss of access to array devices and the stored data.

2. Contributing Factors

This issue can occur on the following platforms:

• Sun StorageTek 6140 Arrays without firmware 06.60.11.10 (as delivered in patch 137934-01)
  

3. Symptoms

If the described issue occurs, the array may end up in a deadlock situation during heavy read I/O.  This may cause the attached server to loose access to data. A Solaris server attached to the array will show the following message in the "/var/adm/messages" file:

 Aug 10 17:04:02 jesbuild1 SCSI transport failed: reason 'timeout': giving up
 Aug 10 17:04:02 jesbuild1 scsi: [ID 107833 kern.warning] WARNING: 
 /scsi_vhci/ssd@g600a0b8000260f0a00000bbf455912b3 (ssd136):
 Aug 10 17:04:02 jesbuild1 SCSI transport failed: reason 'timeout': giving up
 Aug 10 17:04:03 jesbuild1 scsi: [ID 107833 kern.warning] WARNING: 
 /scsi_vhci/ssd@g600a0b8000260f0a00000b544558a29f (ssd154):
 Aug 10 17:04:03 jesbuild1 SCSI transport failed: reason 'timeout': giving up
 Aug 10 17:04:04 jesbuild1 scsi: [ID 107833 kern.warning] WARNING: 
 /scsi_vhci/ssd@g600a0b8000260f0a00000c81455b0a27 (ssd152):
 Aug 10 17:04:04 jesbuild1 SCSI transport failed: reason 'timeout': giving up

4. Workaround

There is no workaround for this issue.  Please see the Resolution section below.

5. Resolution

This issue is addressed on the following platforms:

• Sun StorageTek 6140 Array with firmware 06.60.11.10 (as delivered in patch 137934-01) or later
  

The firmware version listed above is provided as part of the Sun StorageTek Common Array Manager 6.1.0 release bundle.

Storage Software downloads are available from:

http://www.oracle.com/technetwork/server-storage/sun-storage-software/overview/index.html


References:

<SUNPATCH:137934-01>

Internal Comments
Please send technical questions to the following email:
  [email protected]
and CC the following persons:
  Internal Contributor/Submitter
  Internal Eng Responsible Engineer
Internal Contributor/submitter
[email protected]
Internal Eng Responsible Engineer
[email protected], [email protected]
Internal Services Knowledge Engineer
[email protected]
Internal Eng Business Unit Group
NWS (Network Storage)
Internal Escalation ID
1-389744013, 1-389744017, 1-389747401, 1-452676613
1-23074485, 1-23148861

References

<SUNPATCH:137934-01>

Attachments

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