[opensuse] problem with network startup and netcosole
I am running opensuse 42.3 with a 4.18.7 kernel. I have worked on this netconsole problem for almost two months. I realize it is not part of the standard distribution, but I feel it should work to allow one to record crash dumps. I am currently looking for: 1. a person with expertise in network startup and netconsole; 2. a person that will build a system with netconsole to verify my problem. Below is my setup, first the kernel command line: linux netconsole=64001@192.168.7.60/eth0,64001@192.168.7.55/34:e6:d7:01:2a:dd loglevel=8 and then my receiving script: sudo nc -v -u -l 64001 | tee netconsole.log In summary, netconsole works fine, up to the point it hangs at around 12us after boot. Before the hang the destination output matches that presented by dmesg. I looked in /var/log/messages for an entry corresponding to the time netconsole halts and I find: systemd[1]: Started wicked AutoIPv4 supplicant service. And I do not believe the destination is hanging, because if I reboot the source, the output log on the destination continues. Messages such as those generated by ("modprobe floppy" = no such device) also do not appear on the destination, but do appear in dmesg. The output also continues on the destination if I issue a command to generate a panic, "echo c > /proc/sysrq-trigger". So something in the panic must be fixing netconsole. If I run the module version, it behaves as expected printing the "no such device" messages from "modprobe floppy", and others that I found suggested on the net. I have read the Linux Device Drivers book, and asked the question on opensuse_kernel, kernelnewbies and this list. From what I can discover, netconsole is a driver stacked on printk, so anything printk issues should go to netconsole. Most respondents to my queries tell me that the log level is incorrect, but I feel if the messages are appearing in the dmesg dump the log level must be correct. The "Started wicked AutoIPv4 supplicant service" message coincident with the freeze makes me believe that the opensuse system startup is corrupting the linkage netconsole has established. Any assistance would be appreciated. Don -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org
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don fisher