From mboxrd@z Thu Jan 1 00:00:00 1970 From: Patrick Mansfield Subject: Re: [lvm] [christophe.varoqui@free.fr: dm multipath target] Date: Fri, 22 Aug 2003 08:55:12 -0700 Sender: linux-scsi-owner@vger.kernel.org Message-ID: <20030822085512.A29419@beaverton.ibm.com> References: <1061299572.3f4225742287c@impt1-2.free.fr> <20030819182347.O8420@sistina.com> <20030820012204.449c2b34.christophe.varoqui@free.fr> <20030820150253.X8420@sistina.com> <1061389164.3f43836ccaf56@impt1-1.free.fr> <20030821144716.Y8420@sistina.com> <1061483692.3f44f4ac24e07@impt1-2.free.fr> <20030822105146.B8420@sistina.com> <20030822075953.A28851@beaverton.ibm.com> <1061566443.3f4637ebcd1ca@impt1-2.free.fr> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from e32.co.us.ibm.com ([32.97.110.130]:33946 "EHLO e32.co.us.ibm.com") by vger.kernel.org with ESMTP id S263268AbTHVPzz (ORCPT ); Fri, 22 Aug 2003 11:55:55 -0400 Content-Disposition: inline In-Reply-To: <1061566443.3f4637ebcd1ca@impt1-2.free.fr>; from christophe.varoqui@free.fr on Fri, Aug 22, 2003 at 05:34:03PM +0200 List-Id: linux-scsi@vger.kernel.org To: christophe.varoqui@free.fr Cc: mauelshagen@sistina.com, linux-scsi@vger.kernel.org On Fri, Aug 22, 2003 at 05:34:03PM +0200, christophe.varoqui@free.fr wrote: > Selon Patrick Mansfield : > > The sending of any special command to enable an alternative path (like the > > ghost LUN) should be done in a kernel thread or some way that allows the > > root file system to be multi-pathed on such devices. > > > Early userspace should do the trick to keep vendors out of kernel development. > Anyway, it is still not clear to me how HBAs BIOS treat such ghost LUNs at boot. I don't mean boot time, but special commands sent at the time of failure. You can't run a user space program if the disk it's on needs to failover. -- Patrick Mansfield