A fix is available
APAR status
Closed as program error.
Error description
VARY command performance improvements needed.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All users of z/VM * **************************************************************** * PROBLEM DESCRIPTION: * **************************************************************** * RECOMMENDATION: APPLY PTF * **************************************************************** In some use cases, large VARY ON RDEV commands have led to noticable command response time that has resulted in timeout conditions to programs using the VARY command. This has particularly been reported by GDPS users during xDR initialization processing.
Problem conclusion
VARY ON RDEV has been updated to handle the processing of specified devices in parallel. After initial lookup and checks of a specified device, a thread is created to do the majority of the work required to vary the device online. This allows this processing to take place for many devices at a time and significantly decrease the response time of the command. The help file for VARY RDEV has been updated to describe a new QUIET operand for VARY ON/OFF. This operand prevents general non-error response messages from being issued by the commands in order to reduce the command output to only essential messages. Minor help file updates related to these changes will be made to QUERY HYPERSWAP in the next release in development.
Temporary fix
FOR RELEASE VM/ESA CP/ESA R640 : PREREQ: VM66029 CO-REQ: NONE IF-REQ: NONE FOR RELEASE VM/ESACP/ESAR710 : PREREQ: NONE CO-REQ: NONE IF-REQ: NONE FOR RELEASE VM/ESA CP/ESA R720 : PREREQ: NONE CO-REQ: NONE IF-REQ: NONE
Comments
APAR Information
APAR number
VM66386
Reported component name
VM CP
Reported component ID
568411202
Reported release
710
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2020-05-11
Closed date
2020-08-14
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:
Modules/Macros
HCPCPF HCPCPN HCPCPS HCPFCA HCPIOJ HCPRDI HCPSXV HCPSZP HCPVPLBK RDEV
SC24626805 | SC24617513 |
Fix information
Fixed component name
VM CP
Fixed component ID
568411202
Applicable component levels
R640 PSY UM35723
UP20/09/15 I 1000
R710 PSY UM35724
UP20/09/15 P 2101
R720 PSY UM35725
UP20/09/15 P 2101
Fix is available
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Document Information
Modified date:
30 June 2021