A fix is available
APAR status
Closed as new function.
Error description
Allow paging space to be allocated anywhere on an NVMe EDEVICE and to be of any size up to the available capacity. Removes the 'below 64G' restriction for PAGE allocations on NVMe EDEVICEs.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: Users exploiting NVMe EDEVICEs for paging. * **************************************************************** * PROBLEM DESCRIPTION: * **************************************************************** * RECOMMENDATION: APPLY PTF * **************************************************************** Paging allocations on NVMe EDEVICEs were limited to 64G, which prevented the full benefit this technology could provide from being realized. This new function allows paging allocations to be defined as large as the EDEVICE capacity (typically close to 1 terabyte) using the CPFMTXA utility. CPFMTXA allocation has been enhanced for FBA devices and EDEVICEs to permit the size of an extent to be specified in megabytes, gigabytes, or terabytes (e.g., "PAGE 1T") and to adjust its boundaries automatically. ICKDSF APAR PH52513 (PTF UI92308) is required to support larger allocations. An additional fix checks the formatted block size of the NVMe SSD and the initial SET EDEVICE command fails with a new variant of message HCP377E if it is not 512 bytes. Further fixes address potential problems with very high activity rates and with missing interruptions. If a missing interruption is detected, the following new message will be reported to the system operator: HCP1162I Active missing interrupt remediation initiated for PCI function rpfid. If the condition clears, the system operator will receive this message: HCP1162I Active missing interrupt remediation terminated for PCI function rpfid.
Problem conclusion
Temporary fix
Comments
z/VM: CP Commands and Utilities Reference Form number SC24-6268-73 CPFMTXA HELPCP has been updated to document the new FBA allocation syntax and to provide examples of using it. z/VM: CP Messages and Codes Form number GC24-6270-73 HCP377E HELPMSG has been updated to document the new variant of this message. HCP1162I HELPMSG has been created to document two variants of this new message.
APAR Information
APAR number
VM66675
Reported component name
VM CP CP
Reported component ID
568411202
Reported release
730
Status
CLOSED UR1
PE
NoPE
HIPER
NoHIPER
Special Attention
YesSpecatt / New Function / Xsystem
Submitted date
2023-03-09
Closed date
2023-08-18
Last modified date
2024-04-04
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UM90336
Modules/Macros
CPFMTXA CPLOAD HCPDVT HCPMDLAT HCPMES HCPMESB HCPMXRBK HCPNVM HCPNVME HCPPCH HCPPCI HCPRDX HCP1162I HCP377E VRDCBLOK
GC24627073 | SC24626873 |
Fix information
Fixed component name
VM CP CP
Fixed component ID
568411202
Applicable component levels
R730 PSY UM90336
UP23/08/21 P 2401
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":"730"}]
Document Information
Modified date:
04 April 2024