Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933750Ab0LUKNc (ORCPT ); Tue, 21 Dec 2010 05:13:32 -0500 Received: from mx1.redhat.com ([209.132.183.28]:56917 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933556Ab0LUKNa (ORCPT ); Tue, 21 Dec 2010 05:13:30 -0500 Organization: Red Hat UK Ltd. Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SI4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 3798903 From: David Howells In-Reply-To: <1292892072.8743.70.camel@yhuang-dev> References: <1292892072.8743.70.camel@yhuang-dev> <1292813234.8743.66.camel@yhuang-dev> <4d0662e511688484b3@agluck-desktop.sc.intel.com> <4D0BEE1F.7020008@zytor.com> <20101219091752.GA16150@liondog.tnic> <17027.1292841992@redhat.com> To: Huang Ying Cc: dhowells@redhat.com, "Luck, Tony" , Borislav Petkov , Tony Luck , Linus Torvalds , "H. Peter Anvin" , "linux-kernel@vger.kernel.org" , "linux-arch@vger.kernel.org" , "tglx@linutronix.de" , "mingo@elte.hu" , "greg@kroah.com" , "akpm@linux-foundation.org" , David Miller , Alan Cox , Jim Keniston , Kyungmin Park , Geert Uytterhoeven Subject: Re: [concept & "good taste" review] persistent store Date: Tue, 21 Dec 2010 10:10:58 +0000 Message-ID: <32058.1292926258@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 997 Lines: 23 Huang Ying 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. My point is how do you know an oops message will actually manage to get to disk? There's a userspace program (syslogd) between the kernel log and the disk or network. David -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/