From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Brownell Subject: Re: [PATCH 2/2] Fix console handling during suspend/resume Date: Wed, 21 Jun 2006 14:21:20 -0700 Message-ID: <200606211421.20402.david-b@pacbell.net> References: <20060614103404.GC28536@elf.ucw.cz> <1150862396.12507.103.camel@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: Content-Disposition: inline List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-pm-bounces@lists.osdl.org Errors-To: linux-pm-bounces@lists.osdl.org To: Linus Torvalds Cc: linux-pm@lists.osdl.org, Pavel Machek List-Id: linux-pm@vger.kernel.org On Tuesday 20 June 2006 9:22 pm, Linus Torvalds wrote: > = > = > Let's cut right to the chase: > - I think "image save" is snapshotting > - I think snapshotting is well-defined (and possibly useful) without any = > suspend activity what-so-ever. > - I think that anybody who confuses and mixes the two is (a) missing the = > real potential of snapshotting, but even more importantly (b) making i= t = > much more complex by having the wrong mental model. Preaching to the choir here. Snapshotting gets interest on the low end as a way to accelerate system startup, and on the high end as a way to enable checkpoint+failover as a high-availability tool. (Don't restart that month-long simulation run the day before completion; just restore the last checkpoint before the backhoe powered down that part of the city.) So a snapshot mechanism that decouples from swsusp would be a Good Thing. - Dave > Mental models are supremely important. Often you can say that they don't = > actually matter, because the end result should be the same, but the fact = > is, they have a huge impact on _how_ people think, and on how you get to = > the end result. =