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Re: Netconsole scripts for Debian




On 06/17/2014 03:00 PM, Pavel Odintsov wrote:
> Hello, folks!
> 
> I'm prepared and thoroughly tested scripts for managing netconsole
> kernel facility in Debian 6/7. Netconsole facility is very useful for
> debugging kernel bugs.
> 
> These scripts are inspired by CentOS 6 netconsole scripts in some
> cases and work in same way. Scripts are written in clean bash.
> 
> All scripts and configuration you can find here:
> https://github.com/FastVPSEestiOu/debian_netconsole
> 
> Yes, it's possible to configure netconsole statically (i.e. as
> /etc/modprobe.d/netconsole.conf) but it's a bad way because it relies
> on network configuration (i.e. gateway address, server address) which
> may be changed and netconsole will not work.
> 
> I tested both startup option:
> 1) As /etc/init.d/netconsole
> 2) As /etc/network/if-up.d/netconsole script
> 
> IMHO, the first variant is more reliable and convenient for this task.
> But both variants have some troubles because some network cards (like
> e1000) call /etc/network/if-up.d and /etc/init.d scripts on network
> level BEFORE real network initialization.
> 
> I fixed this issue only by adding fixed timeout in my
> /etc/init.d/netconsole script. In the same way this issue was fixed in
> RH. Maybe you can provide more convenient solution?
> 
> Thank you for any feedback!
> 


You should add support for it in initrd. netconsole is more useful at
that stage. In real boot, why would one want netconsole if syslog is
running.


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