From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lars Marowsky-Bree Subject: Re: monitoring multipath arrays plus inconsistent /proc/mdstat? Date: Fri, 22 Oct 2004 11:17:19 +0200 Sender: linux-raid-owner@vger.kernel.org Message-ID: <20041022091719.GF3911@marowsky-bree.de> References: <20041021165119.GU3911@marowsky-bree.de> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Content-Disposition: inline In-Reply-To: To: linux-raid@vger.kernel.org List-Id: linux-raid.ids On 2004-10-22T07:41:37, Lajber Zoltan wrote: (Your mailer is messing up the To: line. Please fix.) > > > Whom to trust here? How do we monitor multipath arrays effectivel= y? > > On 2.6, use multipath-tools, which are seeing active development. > > multipath storage is being moved to the Device-Mapper in 2.6. > Is it stable? the version number increasing quite rapidly... Well, it's actively being developed right now, as always. > I woud like to use it with emc clariion, dual HBA (qlogic) environmen= t. EMC CLARiiON active/passive failover support is forthcoming. > Afaik emc powerpath dont's support 2.6.x kernels, is it? No, and as far as I know, it's not going to. I got technical docs + a CX500 from EMC for developing the CLARiiON support and am busy with just that (if I wasn't writing this mail ;-). The commandline tools have already been merged upstream, so if you use sg3_utils, you'll find that sg_inq is able to decode the EMC-specific Unit Path Report Page and that you can manually switch Service-Processors for a LUN using the sg_emc_trespass command. Alasdair and I are ping-ponging patches for the dm-mpath.c, and I think we should have it done fairly soon... Sincerely, Lars Marowsky-Br=E9e --=20 High Availability & Clustering SUSE Labs, Research and Development SUSE LINUX AG - A Novell company - To unsubscribe from this list: send the line "unsubscribe linux-raid" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html