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From: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
To: Seiji Aguchi <seiji.aguchi@hds.com>
Subject: Re: [RFC][Patch] Adding kmsg_dump() to reboot/halt/poweroff/emergency_restart path
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Date: Tue, 19 Oct 2010 17:52:34 +0900 (JST)
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> 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().

But if they ack this one, I have no objection.

Thanks.