A fix is available
APAR status
Closed as program error.
Error description
When SET IOASSIST OFF is in effect, a z/OS guest can hang when running RoCE workload.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All users of SET IOASSIST OFF running RoCE w * **************************************************************** * PROBLEM DESCRIPTION: * **************************************************************** * RECOMMENDATION: APPLY PTF * **************************************************************** A z/OS guest running on z/VM can hang when running RoCE workload with SET IOASSIST OFF in effect.
Problem conclusion
The hang is due to a lock which was obtained and never released. The code in HCPPCH has been corrected.
Temporary fix
Comments
APAR Information
APAR number
VM66398
Reported component name
VM CP
Reported component ID
568411202
Reported release
640
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2020-06-04
Closed date
2020-06-25
Last modified date
2021-06-29
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UM35682 UM35683
Modules/Macros
HCPPCH
Fix information
Fixed component name
VM CP
Fixed component ID
568411202
Applicable component levels
Fix is available
Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.
[{"Business Unit":{"code":"BU011","label":"Systems - zSystems software"},"Product":{"code":"SG27M"},"Platform":[{"code":"PF054","label":"z\/OS"}],"Version":"640","Line of Business":{"code":"LOB16","label":"Mainframe HW"}}]
Document Information
Modified date:
30 June 2021