A fix is available
APAR status
Closed as program error.
Error description
DIAGNOSE X'0E4' subfunction 3 returns rc=407 for full-pack minidisks with virtual/real reserve/release. The problem only occurs with fullpack minidisks. A minidisk defined with DEVNO does not get rc=407.
Local fix
N/A
Problem summary
**************************************************************** * USERS AFFECTED: z/VM Users of Diagnose xE4 Function 3 * **************************************************************** * PROBLEM DESCRIPTION: * **************************************************************** * RECOMMENDATION: APPLY PTF * **************************************************************** Code added by VM 620 for SSI Link processing changed some of the internal processing for determining link conflicts. Part of this change was not allowing a non-full pack link request if a full pack mini link is already active containing virtual reserve / release or working allegiance capability. Diagnose E4 Function 3 got wound up in this change because processing sends the request to link conflict checking as a 1-cylinder minidisk based upon the Diag's input cylinder no. This causes link conflict checking to reject the request with RC 407 if a full pack mini already exists with vir res / rel or working alleg. There is an exception case. If the real device contains an existing DEVNO mini, then the Diag E4 F3 request was sent to link conflict checking as a full pack mini request if the diag input cyl no. was 0. This allows link conflict checking to pass the request.
Problem conclusion
Internal Link processing in HCPLNS was modified to send a Diag E4 F3 request to link conflict checking as a full pack mini request if the input cyl no. is 0 and there is no existing DEVNO link on the RDEV. This causes link conflict checking to pass the request if there is already a fullpack mini link active with vir res / rel or working alleg. This change makes Diag E4 Function 3 overlay requests work the same when there are existing FP system-attached volser links as it does for existing DEVNO links.
Temporary fix
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
VM66579
Reported component name
VM CP CP
Reported component ID
568411202
Reported release
710
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2021-11-11
Closed date
2022-04-29
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:
UM35971 UM35972
Modules/Macros
HCPLNS
Fix information
Fixed component name
VM CP CP
Fixed component ID
568411202
Applicable component levels
Fix is available
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Document Information
Modified date:
01 April 2023