From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mike Christie Subject: Re: [PATCH RFC 0/4] use scatter lists for all block pc requests and simplify hw handlers Date: Wed, 08 Jun 2005 10:41:48 -0500 Message-ID: <42A711BC.9020108@cs.wisc.edu> References: <1117847972.23638.62.camel@mina> <1117901234.5005.9.camel@mulgrave> <1117955727.4961.8.camel@mina> <20050606190205.GA6817@us.ibm.com> <1118157976.42a5bc98d6f75@webmail.cs.wisc.edu> <20050607182317.GA12959@us.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mx1.redhat.com ([66.187.233.31]:55472 "EHLO mx1.redhat.com") by vger.kernel.org with ESMTP id S262004AbVFHVnS (ORCPT ); Wed, 8 Jun 2005 17:43:18 -0400 In-Reply-To: <20050607182317.GA12959@us.ibm.com> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: Patrick Mansfield Cc: James Bottomley , device-mapper development , linux-scsi , Jens Axboe Patrick Mansfield wrote: > On Tue, Jun 07, 2005 at 10:26:16AM -0500, Michael Christie wrote: > >>Quoting Patrick Mansfield : > > >>>Why can't the retries be passed down via a new blk req->retries? >>> >> >>Is that all that is needed for dm-multipath? I thought this would be a good time >>to add some code to allow the finer grained control of retries that could also >>be used by dm and md. For example do you only want to retry certain failures X >>numbeer of times? > > > I was looking/thinking about the scsi_scan retries not multipath. And I was hoping the same code/framework can be used for scsi, DM, MD, SG_IO and all other block layer drivers.