Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761853AbYBFKWR (ORCPT ); Wed, 6 Feb 2008 05:22:17 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1759207AbYBFKWG (ORCPT ); Wed, 6 Feb 2008 05:22:06 -0500 Received: from wx-out-0506.google.com ([66.249.82.234]:43163 "EHLO wx-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758273AbYBFKWC (ORCPT ); Wed, 6 Feb 2008 05:22:02 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=sBREfVl7g81WDz9eEOtLqmWFlLNIcVv2+4r0/G8ugYYTS9rJyenFNdeek1e++EM9TRKDW8y1MLsqB0HuMMnFrJw2sUZ/8mhZJELET3c2gpRAdVEa3YgYG/BAUqmOjDtV3557+8cp8xPLsSJ9nCBAThgkfq7v/tmNHsu5JVR5uhg= Message-ID: Date: Wed, 6 Feb 2008 11:22:00 +0100 From: "Bart Van Assche" To: "Jeff Garzik" Subject: Re: Integration of SCST in the mainstream Linux kernel Cc: "Linus Torvalds" , "J. Bruce Fields" , "Nicholas A. Bellinger" , "James Bottomley" , "Vladislav Bolkhovitin" , "Andrew Morton" , "FUJITA Tomonori" , linux-scsi@vger.kernel.org, scst-devel@lists.sourceforge.net, "Linux Kernel Mailing List" , "Mike Christie" In-Reply-To: <47A8A1C8.2010407@garzik.org> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <47A05CBD.5050803@vlnb.net> <1202145901.3096.49.camel@localhost.localdomain> <1202151989.11265.576.camel@haakon2.linux-iscsi.org> <20080204210121.GF18682@fieldses.org> <47A7986B.1070206@garzik.org> <47A8A1C8.2010407@garzik.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1023 Lines: 24 On Feb 5, 2008 6:50 PM, Jeff Garzik wrote: > For remotely accessing data, iSCSI+fs is quite simply more overhead than > a networked fs. With iSCSI you are doing > > local VFS -> local blkdev -> network > > whereas a networked filesystem is > > local VFS -> network There are use cases than can be solved better via iSCSI and a filesystem than via a network filesystem. One such use case is when deploying a virtual machine whose data is stored on a network server: in that case there is only one user of the data (so there are no locking issues) and filesystem and block device each run in another operating system: the filesystem runs inside the virtual machine and iSCSI either runs in the hypervisor or in the native OS. Bart Van Assche. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/