From owner-freebsd-hackers Tue Jul 16 22:30:32 2002 Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id AC76837B400 for ; Tue, 16 Jul 2002 22:30:30 -0700 (PDT) Received: from mail3.dreamscape.com (mail3.dreamscape.com [206.64.128.213]) by mx1.FreeBSD.org (Postfix) with ESMTP id 21C9C43E4A for ; Tue, 16 Jul 2002 22:30:26 -0700 (PDT) (envelope-from krentel@dreamscape.com) Received: from dreamscape.com (sA16-p10.dreamscape.com [209.217.195.137]) by mail3.dreamscape.com (8.9.3+blt/8.9.3) with ESMTP id BAA07344 for ; Wed, 17 Jul 2002 01:30:23 -0400 (EDT) Received: from blue.mwk.domain (localhost [127.0.0.1]) by dreamscape.com (8.11.1/8.11.1) with ESMTP id g6H5Tr512665 for ; Wed, 17 Jul 2002 01:29:55 -0400 (EDT) (envelope-from krentel@blue.mwk.domain) Message-Id: <200207170529.g6H5Tr512665@dreamscape.com> To: freebsd-hackers@freebsd.org Subject: dump on mounted fs Date: Wed, 17 Jul 2002 01:29:53 -0400 From: "Mark W. Krentel" Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Dump still works on a mounted file system in Freebsd, right? That is, a write that completes before dump is started will be in the dump, even if the data is in memory? I don't mean writing to a file during the dump, that's a separate problem. I only recently learned that this doesn't work in Linux and I wanted to check that it's (still?) ok in Freebsd. Apparently, in the 2.4 Linux kernels, the buffer and page caches make it impossible for dump to always get the correct version of a file, even if there are no writes during the dump. It takes a umount before dump will see all of the changes (yuck). Anyone know about Solaris, IRIX, etc? --Mark To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message