From owner-freebsd-questions@FreeBSD.ORG Wed Jan 14 23:18:03 2009 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 18FE5106564A for ; Wed, 14 Jan 2009 23:18:03 +0000 (UTC) (envelope-from psteele@maxiscale.com) Received: from arcturus.maxiscale.com (arcturus.maxiscale.com [76.231.178.136]) by mx1.freebsd.org (Postfix) with ESMTP id E2E718FC08 for ; Wed, 14 Jan 2009 23:18:02 +0000 (UTC) (envelope-from psteele@maxiscale.com) X-ASG-Debug-ID: 1231974888-274300020000-jLrpzn X-Barracuda-URL: http://10.100.1.25:8000/cgi-bin/mark.cgi Received: from polaris.maxiscale.com (localhost [127.0.0.1]) by arcturus.maxiscale.com (Spam Firewall) with ESMTP id 52CCD37BB2 for ; Wed, 14 Jan 2009 15:14:49 -0800 (PST) Received: from polaris.maxiscale.com (polaris.maxiscale.com [10.100.1.24]) by arcturus.maxiscale.com with ESMTP id v9oKWjJySvAPb5uK for ; Wed, 14 Jan 2009 15:14:48 -0800 (PST) X-ASG-Whitelist: Client X-MimeOLE: Produced By Microsoft Exchange V6.5 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable X-ASG-Orig-Subj: RE: Should swap space be mirrored via geom? Date: Wed, 14 Jan 2009 15:14:23 -0800 Message-ID: <2ACA3DE8F9758A48B8BE2C7A847F91F247A232@polaris.maxiscale.com> In-Reply-To: <7C98E2D0-D084-4B6D-9133-F518D5DFF4E5@mac.com> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: Should swap space be mirrored via geom? Thread-Index: Acl2ha1qQLrWR3nJSMWFB1Xlwi3U6gAF477g References: <2ACA3DE8F9758A48B8BE2C7A847F91F247A1E1@polaris.maxiscale.com> <7C98E2D0-D084-4B6D-9133-F518D5DFF4E5@mac.com> From: "Peter Steele" To: "Chuck Swiger" X-Barracuda-Connect: polaris.maxiscale.com[10.100.1.24] X-Barracuda-Start-Time: 1231974898 X-Barracuda-Virus-Scanned: by Barracuda Spam Firewall at maxiscale.com Cc: freebsd-questions@freebsd.org Subject: RE: Should swap space be mirrored via geom? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 14 Jan 2009 23:18:03 -0000 > If you don't mirror swap space, and a drive goes out, you're almost =20 > certain to experience a kernel panic and not just application failures > in userland. Unless you have an urgent need for lots of swap space =20 > available, it's much better from the standpoint of system reliability > to mirror swap also. That's what we assumed might be the danger. It's pretty obvious when you think about it ultimately and I'm curious why anyone would have suggested not to mirror the swap partition.=20 Thanks for the reply. Peter