From: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
To: ext KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Seiji Aguchi <seiji.aguchi@hds.com>,
"simon.kagstrom@netinsight.net" <simon.kagstrom@netinsight.net>,
"David.Woodhouse@intel.com" <David.Woodhouse@intel.com>,
"anders.grafstrom@netinsight.net"
<anders.grafstrom@netinsight.net>,
"akpm@linux-foundation.org" <akpm@linux-foundation.org>,
"jason.wessel@windriver.com" <jason.wessel@windriver.com>,
"jslaby@suse.cz" <jslaby@suse.cz>,
"jmorris@namei.org" <jmorris@namei.org>,
"eparis@redhat.com" <eparis@redhat.com>,
"hch@lst.de" <hch@lst.de>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"dle-develop@lists.sourceforge.net"
<dle-develop@lists.sourceforge.net>,
Satoru Moriya <satoru.moriya@hds.com>
Subject: Re: [RFC][Patch] Adding kmsg_dump() to reboot/halt/poweroff/emergency_restart path
Date: Tue, 19 Oct 2010 11:51:12 +0300 [thread overview]
Message-ID: <1287478272.9272.9.camel@localhost> (raw)
In-Reply-To: <20101019173303.A205.A69D9226@jp.fujitsu.com>
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)
next prev parent reply other threads:[~2010-10-19 8:55 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-18 22:24 [RFC][Patch] Adding kmsg_dump() to reboot/halt/poweroff/emergency_restart path Seiji Aguchi
2010-10-18 22:33 ` Andrew Morton
2010-10-27 19:44 ` Seiji Aguchi
2010-11-03 21:50 ` Aaron Durbin
2010-11-04 7:20 ` Artem Bityutskiy
2010-10-19 8:52 ` KOSAKI Motohiro
2010-10-19 8:51 ` Artem Bityutskiy [this message]
2010-10-27 23:35 ` Andrew Morton
2010-10-28 19:58 ` Artem Bityutskiy
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