On Wed, Feb 2, 2011 at 2:00 PM, Justin Piszcz <jpiszcz@xxxxxxxxxxxxxxx> wrote: > > > 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. As for me, when i've tryed to use netconsole on debian, i've needed to add such lines into /etc/initramfs-tools/modules 8139too 8139cp netconsole netconsole=4444@xxxxxxxxxx/eth0,514@xxxxxxxx/00:18:74:z:z:z and do "update-initramfs -u -k `uname -r`" then where 8139too are my NIC modules - can be obtained with lspci -k and 00:18:74:z:z:z was mac of the gateway. Worked on .18, but not on .32 kernel, though.. > -- > To unsubscribe from this list: send the line "unsubscribe linux-raid" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- Best regards, [COOLCOLD-RIPN] -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
