iostat H/W Errors Increment for Multipathed Disks due to "SCSI Sense Key: Unit_Attention ASC: 0x2a (parameters changed), ASCQ: 0x0" when ZFS Modifies the Write Cache Mode
(Doc ID 1551633.1)
Last updated on SEPTEMBER 01, 2023
Applies to:
SPARC T4-2 - Version All Versions to All Versions [Release All Releases]Solaris Operating System - Version 10 1/13 U11 to 11.2 [Release 10.0 to 11.0]
Information in this document applies to any platform.
Symptoms
The iostat H/W Errors Increment for Multipathed Disks due to "SCSI Sense Key: Unit_Attention ASC: 0x2a (parameters changed), ASCQ: 0x0" when ZFS Modifies the Write Cache Mode.
Changes
This change in behavior was introduced by the fix for
<Bug 15588234> : SUNBT6880334 zpool destroy does not disable the write cache on a disk drive, which was integrated into Solaris 11 GA and the following Solaris 10 patches:
<Patch 147147-26> Synopsis: SunOS 5.10: kernel patch
<Patch 147148-26> Synopsis: SunOS 5.10_x86: kernel patch
Cause
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In this Document
| Symptoms |
| Changes |
| Cause |
| Solution |
| References |