A fix is available
APAR status
Closed as program error.
Error description
This APAR addresses two problems: 1) A hang condition due to summary unit check recovery not occurring 2) A hang condition due to a RDEVLOCK deadlock scenario
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All z/VM users * **************************************************************** * PROBLEM DESCRIPTION: * **************************************************************** * RECOMMENDATION: APPLY PTF * **************************************************************** This APAR fixes two problems: 1- A hang was seen during the reset of a summary unit condition for a PPRC Suspend event. Reset processing ran into an IFCC condition and recovery I/O was allowed that does not work through a summary unit check and hangs. 2- A hang was seen during system IPL due to a deadlock scenario for a HyperPAV Alias's RDEVLOCK.
Problem conclusion
The solution to the two problems fixed by this APAR are: 1- IFCC recovery was modified to allow a reset of a summary unit check condition to occur before any I/O is issued that does not work through a summary unit check condition. 2- System initialization was modified to not hold the RDEVLOCK of a HyperPAV Alias device while obtaining the RDEVLOCK of a HyperPAV Base device.
Temporary fix
FOR RELEASE VM/ESA CP/ESA R640 : PREREQ: VM66105 VM66098 CO-REQ: NONE IF-REQ: NONE FOR RELEASE VM/ESA CP/ESA R710 : PREREQ: NONE CO-REQ: NONE IF-REQ: NONE
Comments
×**** AE23/11/15 FIX IN ERROR. SEE APAR VM66739 FOR DESCRIPTION
APAR Information
APAR number
VM66213
Reported component name
VM CP
Reported component ID
568411202
Reported release
640
Status
CLOSED PER
PE
NoPE
HIPER
YesHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2018-10-03
Closed date
2018-11-27
Last modified date
2024-03-28
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UM35400 UM35401
Modules/Macros
HCPHPV HCPSDV
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.
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Document Information
Modified date:
04 April 2024