Messages in this thread | | | Subject | Re: [PATCH v2] netconsole: Add tty driver | From | Tetsuo Handa <> | Date | Wed, 2 Apr 2014 21:16:56 +0900 |
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Struan Bartlett wrote: > Adds tty driver to netconsole module. When module is loaded, > creates /dev/netcon0 device and enables support for console=netcon0 > kernel cmdline option, causing /dev/console output to be sent to > /dev/netcon0. This allows startup/shutdown script output from > headless platforms to be logged over (secure) network.
Excuse me, but I think that the netconsole logging can work only during network interfaces (e.g. eth0) are up. Did this patch description assume that the network interfaces are up before the startup script is started and the shutdown script is finished before the network interfaces are down?
By the way, I uploaded a logger specialized for receiving netconsole messages to http://sourceforge.jp/projects/akari/scm/svn/tree/head/branches/udplogger/ . The shortage of netconsole approach compared to serial console approach is that the netconsole logging cannot work if the network interfaces are down. If we could log kernel messages via the netconsole module while initializing kdump kernel by adding console=netcon0 to kdump kernel's command line, we can utilize netconsole as an alternative tool for logging kernel messages in case initialization of kdump kernel fails.
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