From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758156AbXGOWXP (ORCPT ); Sun, 15 Jul 2007 18:23:15 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753214AbXGOWXA (ORCPT ); Sun, 15 Jul 2007 18:23:00 -0400 Received: from nigel.suspend2.net ([203.171.70.205]:54313 "EHLO nigel.suspend2.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753163AbXGOWW7 (ORCPT ); Sun, 15 Jul 2007 18:22:59 -0400 From: Nigel Cunningham Reply-To: nigel@suspend2.net To: "Huang, Ying" Subject: Re: [PATH 0/1] Kexec jump - v2 - the first step to kexec based hibernation Date: Sun, 15 Jul 2007 19:08:04 +1000 User-Agent: KMail/1.9.6 Cc: "Eric W. Biederman" , Pavel Machek , "Rafael J. Wysocki" , Jeremy Maitin-Shepard , Alan Stern , Andrew Morton , david@lang.hm, linux-kernel@vger.kernel.org, linux-pm@lists.linux-foundation.org, Kexec Mailing List References: <1184483593.1898.98.camel@caritas-dev.intel.com> In-Reply-To: <1184483593.1898.98.camel@caritas-dev.intel.com> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart2387600.KdldWAbgaJ"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit Message-Id: <200707151908.05388.nigel@nigel.suspend2.net> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org --nextPart2387600.KdldWAbgaJ Content-Type: text/plain; charset="cp 850" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Hi. On Sunday 15 July 2007 17:13:13 Huang, Ying wrote: > The complete changelog of the patch is as follow: >=20 > --- >=20 > Kexec base hibernation has some potential advantages over uswsusp and > TuxOnIce (suspend2). Some most obvious advantages are: >=20 > 1. The hibernation image size can exceed half of memory size easily. > 2. The hibernation image can be written to and read from almost > anywhere, such as USB disk, NFS. This isn't right. TuxOnIce has no problem with image sizes exceeding half t= he=20 amount of memory, and both uswsusp and TuxOnIce could write to a USB disk/k= ey=20 or NFS as well. Historically, the issue with writing to USB devices has bee= n=20 an issue with USB device drivers, not hibernation implementations. I haven'= t=20 tried writing an image to USB, but with the work on the drivers, I wouldn't= =20 be surprised if it was usable now. NFS? Again, I haven't tried, but wouldn'= t=20 expect it to be impossible. I did try writing an image to an NBD device a=20 couple of years ago. It didn't quite work, but wasn't far away. =20 Regards, Nigel =2D-=20 See http://www.tuxonice.net for Howtos, FAQs, mailing lists, wiki and bugzilla info. --nextPart2387600.KdldWAbgaJ Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQBGmeP1N0y+n1M3mo0RAoHhAJ9YREzwIWYaoPvbA4ET8xBpobd93gCgg9TC j7gTdHPM36nEygefLK6wyC0= =q9qY -----END PGP SIGNATURE----- --nextPart2387600.KdldWAbgaJ--