From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lars Marowsky-Bree Subject: Re: [dm-devel] Re: [PATCH RFC 0/4] use scatter lists for all block pc requests and simplify hw handlers Date: Tue, 7 Jun 2005 09:01:58 +0200 Message-ID: <20050607070158.GX27119@marowsky-bree.de> References: <1117847972.23638.62.camel@mina> <1117901234.5005.9.camel@mulgrave> <1117955727.4961.8.camel@mina> <1117964506.15294.130.camel@zezette> <20050606133135.GZ27119@marowsky-bree.de> <1118102649.42a4e479b5d0f@webmail.cs.wisc.edu> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from gate.in-addr.de ([212.8.193.158]:10733 "EHLO mx.in-addr.de") by vger.kernel.org with ESMTP id S261813AbVFGJNd (ORCPT ); Tue, 7 Jun 2005 05:13:33 -0400 Content-Disposition: inline In-Reply-To: <1118102649.42a4e479b5d0f@webmail.cs.wisc.edu> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: Michael Christie , device-mapper development Cc: James Bottomley , Jens Axboe , linux-scsi On 2005-06-06T19:04:09, Michael Christie wrote: > > It's on the TODO list. It's just not done yet. Essentially we need > > to be able to set BW_RW_FAILFAST from user-space for SGIO. > >=20 > Isn't this a seperate issue? It looks like the RHAT bugzilla asks to > be able to insert directly at the head of the queue so you do you not > have to wait for possibly a hundred IO to complete before the test IO= =2E > Setting failfast just means in case of en error it will be returned > faster (no wasting time retying). Uhm, sorry, you're right. We actually want/need to be able to set both, but it would sort of end up being the same mechanism (additional flags to SGIO) and so I have it mentally lumped together ;-) Sincerely, Lars Marowsky-Br=E9e --=20 High Availability & Clustering SUSE Labs, Research and Development SUSE LINUX Products GmbH - A Novell Business -- Charles Darwin "Ignorance more frequently begets confidence than does knowledge" - To unsubscribe from this list: send the line "unsubscribe linux-scsi" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html