From: Seiji Aguchi <seiji.aguchi@hds.com>
To: "Luck, Tony" <tony.luck@intel.com>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
CC: David Woodhouse <dwmw2@infradead.org>,
        Marco Stornelli <marco.stornelli@gmail.com>,
        Artem Bityutskiy <Artem.Bityutskiy@nokia.com>,
        KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Linus Torvalds <torvalds@linux-foundation.org>
Date: Mon, 21 Mar 2011 15:49:14 -0400
Subject: RE: [RFC] pstore: Don't use persistent store for normal shutdown
Thread-Topic: [RFC] pstore: Don't use persistent store for normal shutdown
Thread-Index: Acvn9Tz33M0HP8uWS0e0KukxNUy1rwABwu3Q
Message-ID: <5C4C569E8A4B9B42A84A977CF070A35B2C14F5A465@USINDEVS01.corp.hds.com>
References: <4d8797d74168a6441@agluck-desktop.sc.intel.com>
In-Reply-To: <4d8797d74168a6441@agluck-desktop.sc.intel.com>
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Hi,

>Seiji Aguchi added kmsg_dump options for all the "normal" ways
>that a system can be shut down (KEXEC, RESTART, HALT and POWEROFF).
>It doesn't seem useful to save the kernel log to persistent store
>in these cases.

I think we should save the tail of kernel log into persistent store
for both every shutdown and kexec path because these data are useful
in enterprise area.

I already described the useful case in lkml (see below).

normal shutdown:
https://lkml.org/lkml/2010/11/17/249

kexec:
https://lkml.org/lkml/2011/2/23/325

Seiji
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