Troubleshooting
Problem
The primary volume in synchronous or asynchronous mirroring, that was restored from a snapshot or was involved in a vol_copy operation at any time, and later also went through offline mirror initialization, role change, or re-synchronization while the system was redistributing data, could suffer from undetected data corruption that is manifested by reading zeros instead of the correct data. In addition, deletion of such volume may lead to loss of access to all the hosts. If such data corruption occurs - regardless of whether the corrupted data was actually read - the issue will be eventually automatically detected by an internal periodical scrub process. Then, if the system is connected to Proactive Support (IBM Call Home), IBM will be automatically notified, and an IBM support person will be engaged to address the issue.
Environment
Affected systems: IBM XIV Storage Systems Gen3 running versions 11.0.0 or later.
Resolving The Problem
A fix is available in IBM XIV Storage System Gen3 version 11.6.2.b.
For any question about this communication, contact your IBM Technical Advisor should you have one assigned, or your IBM Representative.
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Document Information
Modified date:
17 June 2018
UID
ssg1S1012210