From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hannes Reinecke Subject: [PATCH 0/3] Workqueue framework and ALUA hardware handler Date: Thu, 15 Nov 2007 10:13:52 +0100 Message-ID: <473C0DD0.7080702@suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from ns.suse.de ([195.135.220.2]:41827 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753612AbXKOJNx (ORCPT ); Thu, 15 Nov 2007 04:13:53 -0500 Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: Alasdair G Kergon Cc: device-mapper development , Mike Christie , SCSI Mailing List Hi all, this patchset adds some more abstraction to the multipath hardware handlers. - A generic workqueue framework is added, which allows the hardware handler to submit failover commands independent from multipath I/O. - The exsting RDAC hardware handler is converted to use that framework - A new SPC-3 ALUA hardware handler is added, using that framework - A controller abstraction is added to the framework, which allows for command throttling based on the used controller. - The RDAC hardware handler is modified to use the new controller framework. This patchset superseded my previous implementation of the SPC-3 ALUA handler. Next plans are to update the table definitions and multipath-tools to allow for a passing of the controller ID from userland; ALUA doesn't specify for any controller information, so we have to do this by hand based on prior knowledge of the storage array. As per normal, comments etc welcome. Cheers, Hannes --=20 Dr. Hannes Reinecke zSeries & Storage hare@suse.de +49 911 74053 688 SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 N=FCrnberg GF: Markus Rex, HRB 16746 (AG N=FCrnberg) - 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