From owner-freebsd-stable Wed Sep 8 4:43:23 1999 Delivered-To: freebsd-stable@freebsd.org Received: from public.bta.net.cn (public.bta.net.cn [202.96.0.97]) by hub.freebsd.org (Postfix) with ESMTP id 0676415A99 for ; Wed, 8 Sep 1999 04:43:13 -0700 (PDT) (envelope-from robinson@netrinsics.com) Received: from netrinsics.com (robinson@TCE-E-7-179-149.bta.net.cn [202.106.179.149]) by public.bta.net.cn (8.9.3/8.9.3) with ESMTP id TAA17154 for ; Wed, 8 Sep 1999 19:36:35 +0800 (CST) Received: (from robinson@localhost) by netrinsics.com (8.9.3/8.8.7) id TAA01242; Wed, 8 Sep 1999 19:38:43 +0800 (CST) (envelope-from robinson) Date: Wed, 8 Sep 1999 19:38:43 +0800 (CST) From: Michael Robinson Message-Id: <199909081138.TAA01242@netrinsics.com> To: Karl.Dietz@triplan.com Subject: Re: Vinum, malloc, and swap Cc: freebsd-stable@freebsd.org In-Reply-To: <37D63FAC.57842E4F@triplan.com> Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Karl Dietz writes: >Michael Robinson wrote: >> If not, is there any other way to prevent a system panic if a drive >> containing a swap partition fails? > >So what does one get from putting swap onto vinum drives? If a drive containing a swap partition fails, the system won't panic. For performance, you want to spread your swap across as many spindles as possible. For reliability, you don't want to do that. Vinum potentially allows you to have performance and reliability. Obviously, one would use RAID 0+1, not RAID 5, for such an application. >BTW: Is swapping to vinum supported? Swapping to anything is supported ("man vnconfig"). The question is this: will swapping to a vinum volume deadlock vm under -STABLE, or has the simple fix described in the vinum introduction been implemented? -Michael Robinson To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message