A fix is available
APAR status
Closed as program error.
Error description
During logon of a guest exploiting Basic PAV they become hung. This happens during creation of a VDEV PAV Alias and Flashcopy is active on the corresponding RDEV. If we encounter this condition we will erroneously try and issue a Read FC Relation- ship Tables CCW to the Alias. The VDEV creation process will hold the PAV BASE RDEV lock and the current I/O process will attempt to obtain the same lock. This causes a deadlock condition.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All z/VM Users * **************************************************************** * PROBLEM DESCRIPTION: * **************************************************************** * RECOMMENDATION: APPLY PTF * **************************************************************** Issuing a Read Flashcopy Tables CCW to a PAV Alias is incorrect. This caused a Guest to hang at logon.
Problem conclusion
HCPLNS has been updated to prevent the Read FC Tables CCW from being issued to a PAV/HPAV Alias device.
Temporary fix
FOR RELEASE VM/ESA CP/ESA R640 : PREREQ: NONE CO-REQ: NONE IF-REQ: NONE FOR RELEASE VM/ESACP/ESAR710 : PREREQ: NONE CO-REQ: NONE IF-REQ: NONE
Comments
APAR Information
APAR number
VM66326
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
2019-09-25
Closed date
2019-12-13
Last modified date
2023-03-31
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UM35574 UM35575
Modules/Macros
HCPLNS
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 Systems"}],"Version":"710"}]
Document Information
Modified date:
01 April 2023