APAR status
Closed as program error.
Error description
On HAWC enabled file systems, a deadlock could occur when a data block is being modified at the same time as log wrap is working on log records for the same block.
Local fix
Disable HAWC feature on the file system
Problem summary
On HAWC enabled file systems, a deadlock could occur when a data block is being modified at the same time as log wrap is working on log records for the same block.
Problem conclusion
This problem is fixed in 5.1.2 PTF 2 To see all Spectrum Scale APARs and their respective fix solutions refer to page https://public.dhe.ibm.com/storage/spectrumscale/spectrum_scale_ apars.html Benefits of the solution: Prevent deadlock that could occur when modifying a data block on a HAWC enabled file system. Work Around: Disable HAWC feature on the file system Problem trigger: Multiple writes to the same block on a HAWC enabled file system. Symptom: Hang/Deadlock/Unresponsiveness/Long Waiters Platforms affected: ALL Operating System environments Functional Area affected: HAWC Customer Impact: High Importance
Temporary fix
Comments
APAR Information
APAR number
IJ36250
Reported component name
SPEC SCALE STD
Reported component ID
5737F33AP
Reported release
512
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2021-12-08
Closed date
2021-12-08
Last modified date
2021-12-08
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
SPEC SCALE STD
Fixed component ID
5737F33AP
Applicable component levels
[{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"STXKQY"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"512","Line of Business":{"code":"LOB26","label":"Storage"}}]
Document Information
Modified date:
09 December 2021