On Wed, 2 Feb 2011, Leslie Rhorer wrote:
Serial console can be captured to a file and then the output analysed.
So you can read afterwards the messages that are flying past.
What i do in such case, is that i take serial connector from a laptop,
and run a terminal emulater like minicom. And capture it to a file so i
can analyse what has been happening.
Yeah, I don't think there is anything pertinent prior to the md
failures, but it might be worth a shot. I don't have a laptop, but I do
have another server sitting right below the one in question. The main
problem is, neither one has a serial port.
Network console? I could tell you how to setup serial console, but i've
never done the network console
Me either. I tired to do a Google search, but I think the words
"network", "console", and "boot" are too common to return practical results,
even when combined with "initrd". I waded through a ton of results, but
couldn't find a tutorial on how to enable a network console in the initrd.
Hi,
Check the network console documentation in the kernel. Essentially, in
LILO, run:
append="netconsole=4444@xxxxxxxxx/eth0,514@xxxxxxxxx/00:60:2D:CD:2A:B7"
^^ src ^^dest / ^dest mac addr
On the remote host, run syslogd -r (to accespt remote syslogging)
This *is* clearly documented here in the kernel docs:
linux/Documentation/networking/netconsole.txt
Re:
It takes a string configuration parameter "netconsole" in the
following format:
netconsole=[src-port]@[src-ip]/[<dev>],[tgt-port]@<tgt-ip>/[tgt-macaddr]
where
src-port source for UDP packets (defaults to 6665)
src-ip source IP to use (interface address)
dev network interface (eth0)
tgt-port port for logging agent (6666)
tgt-ip IP address for logging agent
tgt-macaddr ethernet MAC address for logging agent (broadcast)
Examples:
Justin.
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