Troubleshooting
Problem
This document describes a problem where the client LPAR hangs with SRC A6000266 when you are adding a disk to an ASP on a i client LPAR hosted by VIOS.
Symptom
A6000266
Cause
If a virtual disk has been set up for 520 byte sectors is added to the ASP of an LPAR where the other disks are not set up for 520 byte sectors it can cause the LPAR to hang on SRCA6000266.
Diagnosing The Problem
The current value of the allow520blocks setting can be determined using the lsdev command in VIOS:
$ lsdev -dev vios0 -attr
attribute value description user_settable
allow520blocks yes Allow 520-byte blocks where applicable True
Resolving The Problem
If a customer encounters the problem they can do a force remove of the drive from the HMC or IVM to release the LPAR hang.
There will be a PTF put out for this problem but the above circumvention will still apply if the customer is in the hang condition and doesn't have the PTF applied.
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Document Information
Modified date:
01 April 2025
UID
nas8N1019846