From mboxrd@z Thu Jan 1 00:00:00 1970 From: Douglas Gilbert Subject: Re: [ANNOUNCE] multipath-tools-0.3.4 Date: Mon, 25 Oct 2004 20:39:35 +1000 Sender: linux-raid-owner@vger.kernel.org Message-ID: <417CD7E7.40903@torque.net> References: <1096071849.4466.31.camel@zezette> <1097054573.4163b96d1262c@imp5-q.free.fr> <1097495416.416a73787e0ae@imp1-q.free.fr> <1098021787.5433.8.camel@zezette> <1098269169.417641f18a234@imp1-q.free.fr> <1098656088.9350.88.camel@zezette> <1098692559.2798.7.camel@laptop.fenrus.org> <1098697123.417cc9a3b5bc5@imp1-q.free.fr> Reply-To: dougg@torque.net Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1098697123.417cc9a3b5bc5@imp1-q.free.fr> To: christophe.varoqui@free.fr Cc: Arjan van de Ven , device-mapper development , "linux-raid@vger.kernel.org" , "linux-hotplug-devel@lists.sourceforge.net" , "linux-scsi@vger.kernel.org" , patmans@us.ibm.com List-Id: linux-raid.ids christophe.varoqui@free.fr wrote: > Selon Arjan van de Ven : > > >>On Mon, 2004-10-25 at 00:14 +0200, christophe varoqui wrote: >> >> >>> * multipath & multipathd now use the same path checkers. >>> Consequence being multipath now need sg loaded >> >>why sg and not using SG_IO on the actual devices ? >>mp-tools are 2.6 only anyway, right ? >> > > Glad you notice :) > > In fact all the sg stuff I use is done with the SG_IO ioctl (see > libcheckers/*.c) > But somehow, it doesn't work as expected. I don't remember how exactly it failed > in my tests but it did ... I remembered receiving bad path status and > experiencing blocked checkers. > > I would really like someone experienced put his nose in this stuff. If you want, > I can code up a flag to switch the mp-tools ioctl submission between blockdev > and sgdev. > > Note you don't need to have real multipathed hardware to run and test the thing > : parallel SCSI hw suffice and is seen as monopath. A significant patch from Patrick Mansfield concerning the error reporting of the block layer SG_IO ioctl is present in lk 2.6.10-rc1 . It was not present in lk 2.6.9 and earlier. Doug Gilbert From mboxrd@z Thu Jan 1 00:00:00 1970 From: Douglas Gilbert Date: Mon, 25 Oct 2004 10:39:35 +0000 Subject: Re: [ANNOUNCE] multipath-tools-0.3.4 Message-Id: <417CD7E7.40903@torque.net> List-Id: References: <1096071849.4466.31.camel@zezette> <1097054573.4163b96d1262c@imp5-q.free.fr> <1097495416.416a73787e0ae@imp1-q.free.fr> <1098021787.5433.8.camel@zezette> <1098269169.417641f18a234@imp1-q.free.fr> <1098656088.9350.88.camel@zezette> <1098692559.2798.7.camel@laptop.fenrus.org> <1098697123.417cc9a3b5bc5@imp1-q.free.fr> In-Reply-To: <1098697123.417cc9a3b5bc5@imp1-q.free.fr> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: christophe.varoqui@free.fr Cc: Arjan van de Ven , device-mapper development , "linux-raid@vger.kernel.org" , "linux-hotplug-devel@lists.sourceforge.net" , "linux-scsi@vger.kernel.org" , patmans@us.ibm.com christophe.varoqui@free.fr wrote: > Selon Arjan van de Ven : > > >>On Mon, 2004-10-25 at 00:14 +0200, christophe varoqui wrote: >> >> >>> * multipath & multipathd now use the same path checkers. >>> Consequence being multipath now need sg loaded >> >>why sg and not using SG_IO on the actual devices ? >>mp-tools are 2.6 only anyway, right ? >> > > Glad you notice :) > > In fact all the sg stuff I use is done with the SG_IO ioctl (see > libcheckers/*.c) > But somehow, it doesn't work as expected. I don't remember how exactly it failed > in my tests but it did ... I remembered receiving bad path status and > experiencing blocked checkers. > > I would really like someone experienced put his nose in this stuff. If you want, > I can code up a flag to switch the mp-tools ioctl submission between blockdev > and sgdev. > > Note you don't need to have real multipathed hardware to run and test the thing > : parallel SCSI hw suffice and is seen as monopath. A significant patch from Patrick Mansfield concerning the error reporting of the block layer SG_IO ioctl is present in lk 2.6.10-rc1 . It was not present in lk 2.6.9 and earlier. Doug Gilbert ------------------------------------------------------- This SF.net email is sponsored by: IT Product Guide on ITManagersJournal Use IT products in your business? Tell us what you think of them. Give us Your Opinions, Get Free ThinkGeek Gift Certificates! Click to find out more http://productguide.itmanagersjournal.com/guidepromo.tmpl _______________________________________________ Linux-hotplug-devel mailing list http://linux-hotplug.sourceforge.net Linux-hotplug-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-hotplug-devel