Subject: Re: [concept & "good taste" review] persistent store
From: Huang Ying <ying.huang@intel.com>
To: David Howells <dhowells@redhat.com>
Cc: "Luck, Tony" <tony.luck@intel.com>, Borislav Petkov <bp@alien8.de>,
        Tony Luck <tony.luck@gmail.com>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        "H. Peter Anvin" <hpa@zytor.com>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "linux-arch@vger.kernel.org" <linux-arch@vger.kernel.org>,
        "tglx@linutronix.de" <tglx@linutronix.de>,
        "mingo@elte.hu" <mingo@elte.hu>, "greg@kroah.com" <greg@kroah.com>,
        "akpm@linux-foundation.org" <akpm@linux-foundation.org>,
        David Miller <davem@davemloft.net>,
        Alan Cox <alan@lxorguk.ukuu.org.uk>,
        Jim Keniston <jkenisto@linux.vnet.ibm.com>,
        Kyungmin Park <kmpark@infradead.org>,
        Geert Uytterhoeven <geert@linux-m68k.org>
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Date: Tue, 21 Dec 2010 08:41:12 +0800
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On Mon, 2010-12-20 at 18:46 +0800, David Howells wrote:
> Huang Ying <ying.huang@intel.com> wrote:
> 
> > - for OOPS messages will not cause system panic, it will go to disk and
> > will not use up the persistent storage.
> 
> You can't guarantee that an oops didn't just kill your ability to actually
> write your syslog to disk or out across the network.

I do not need to guarantee that. If the OOPS message can not be written
to disk, just keeping it in persistent storage, and that is the very
value of persistent storage.  But for OOPS can go to disk safely, we do
not need to waste persistent storage for it.

Best Regards,
Huang Ying


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