Hi, On 01-06-2025 14:17, Philipp Kern wrote:
Did you try booting the previous kernel? It should still be in the zipl menu that comes after you IPL (vmlinuz.old). Does that one also not boot? You might need to prefix your selection with a dot (is what my brain tells me for some reason).
I get the following (typed from a screen shot as it disappears): 00: CP 00: IPL 00: zIPL v2.35.0-build-2025025 interactive boot menu 00: 00: 0. default (debian) 00: 00: 1. debian 00: 2. old 00: Note: VM users please use '#cp vi msg <input>' 00: Please choose (default will boot in 10 seconds): And no matter what I type, it boots "default (debian)" after 10 seconds.When I type "2" or ".2" or "2<ret>" or ".2<ret>" it waits until the 10 seconds delay is over and boots up with the default.
I tried to do #cp vi msg 2<ret> and #cp vi msg<ret> but then I get (typed from a screen shot as it disappears) 00: HCPPCX026E Operand missing or invalidAnd only now I realize that I'm in a busybox shell. I can see that I'm actually running the trixie kernel
""" (initramfs) Ý6nuname -a uname -aLinux (none) 6.12.27-s390x #1 SMP Debian 6.12.27-1 (2025-05-06) s390x GNU/Linux
""" so it's not as bad as I thought.I found that although the script says it's running /scripts/local-block, that file doesn't exist. When I touch the file, sometimes booting ends with: 01: HCPGSP2627I The virtual machine is placed in CP mode due to a SIGP initial CPU reset from CPU 00.
A next time, the file is gone again. Any hint how and where to go from here? Paul
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