From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 5 Aug 2002 20:29:06 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 5 Aug 2002 20:29:05 -0400 Received: from maddog.sal.wisc.edu ([144.92.179.20]:19251 "EHLO maddog.sal.wisc.edu") by vger.kernel.org with ESMTP id ; Mon, 5 Aug 2002 20:29:05 -0400 From: Richard Bonomo Message-Id: <200208060032.g760WZP107993@maddog.sal.wisc.edu> Subject: backups/dumps/caches To: linux-kernel@vger.kernel.org Date: Mon, 5 Aug 2002 19:32:34 -0500 (CDT) Cc: bonomo@maddog.sal.wisc.edu (Richard Bonomo) X-Mailer: ELM [version 2.5 PL3] MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hello! I have been trying to come up to speed on the issue of dumping file systems from 2.4.x kernels using dumps. I located Linus' unequivocal words about the dangers of using dump. I have a couple of questions: 1. Do the same warnings apply to XFS and xfsdump? (Is the caching system used with the newer kernel used only with certain file system types?) 2. Perhaps, naively, is it possible to shut off caching temporarily (and without rebooting), accepting the performance hit, while a dump is done, and then restart caching afterwards? Please cc a reply directly to me (bonomo@sal.wisc.edu), as I am not a regular member of this list (at least, not yet...) Thank you! Richard B. -- ************************************************ Richard Bonomo UW Space Astronomy Laboratory ph: (608) 263-4683 telefacsimile: (608) 263-0361 SAL-related email: bonomo@sal.wisc.edu all other email: bonomo@ece.wisc.edu web page URL: http://www.cae.wisc.edu/~bonomo ************************************************