What's new in edition SC34-2612-08
This revision reflects changes for SC34-2612-08 (December 2025). The update adds IBM® z17 ™ and IBM LinuxONE 5 references, nftables for firewall diagnostics, and detailed Linux® data collection steps. Enhancements include dbginfo.sh examples, refreshed outputs, ECuRep download and new accessibility contact information. Obsolete tools, version-specific notes, and outdated Linux distribution details were removed.
New information
- New IBM hardware references updated, for example IBM z17 and IBM LinuxONE 5.
- Network troubleshooting: Added nftables commands for firewall diagnostics. See Collecting data for network problems.
- Appendix B: Detailed steps for collecting Linux data and the setup of a performance data collection (dbginfo and sadc). Collect Linux and setup performance data collection.
- Handling of KVM environments. See Collecting data for general Linux on IBM Z and IBM LinuxONE problems.
Changed information
- dbginfo.sh enhancements: updated example output.
- Examples refreshed with current dbginfo.sh, sos report output and supporconfig.
-
Accessibility section updated with new IBM Deutschland Research & Development address in Ehningen, and email S390ID@de.ibm.com.
- Data download with ECuRep.
- General reference to PCI cards.
- Current package name for dbginfo.sh on Red Hat® Enterprise Linux.
- Adjustment of the parameter: s390buffer pages increases from 10 to 128.
Deleted information
- References to the Service Request Tool.
- Version-specific notes for dump and performance tools.
- Obsolete Linux distribution specifics or versions.