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SubjectRe: [RFC][Patch] Adding kmsg_dump() to reboot/halt/poweroff/emergency_restart path
FromArtem Bityutskiy <>
DateTue, 19 Oct 2010 11:51:12 +0300
On Tue, 2010-10-19 at 10:52 +0200, ext KOSAKI Motohiro wrote:
> > Hi,
> >
> > Final messages from reboot, halt and poweroff aren't output to disk because klogd/syslogd
> > has been killed and root file system has been turned read-only.
> >
> > Final messages from emergency_restart aren't output to disk as well because system may
> > reboot before klogd/syslogd outputs messages to disk.
> >
> > Therefore, it is better to put kmsg_dumper in reboot/halt/poweroff/emergency_restart path.
> > Any comments/advices are welcome.
>
> I think mtdoops user don't want to dump logs if a system reboot/poweroff
> safely because mtd device have write count limitation. and they are main
> user of kmsg_dump().

Right, at least this is how we use mtdoops - we log crashes.

--
Best Regards,
Artem Bityutskiy (Артём Битюцкий)

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