Hello, I have two questions regarding APAR VM63119. Do all versions of Linux (for S/390 and zSeries) use SPID and SNID? Did anyone see any differences on the Linux guests after the ptf was applied to their VM systems?
Thank you APAR Identifier ...... VM63119 Last Changed ........ 02/09/24 ADD PARTIAL SNID AND SPID CCW SUPPORT FOR MINIS ERROR DESCRIPTION: Partial SNID and SPID CCW support is needed in VM minidisk simulation so that a Linux guest can tell if a minidisk is reserved by another guest. PROBLEM SUMMARY: **************************************************************** * USERS AFFECTED: All VM users running Linux guests. * **************************************************************** * PROBLEM DESCRIPTION: * **************************************************************** * RECOMMENDATION: APPLY PTF * **************************************************************** Partial Set Path Group Id (SPID) and Sense Path Group Id (SNID) simulation is necessary for VM minidisks so that a Linux guest can determine device reservation status. Although only SNID support is necessary to make Linux work, SPID support is needed to provide a more complete solution. Currently, without a fix, all SNID and SPID CCWs issued to a minidisk are command rejected.
