From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bart Van Assche Subject: Re: [PATCHv2 00/16] scsi_dh_alua updates Date: Sun, 02 Mar 2014 10:10:12 +0100 Message-ID: <5312F574.7050906@acm.org> References: <1391160600-19652-1-git-send-email-hare@suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from smtp03.stone-is.org ([87.238.162.6]:47527 "EHLO smtpgw.stone-is.be" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751467AbaCBJKQ (ORCPT ); Sun, 2 Mar 2014 04:10:16 -0500 In-Reply-To: <1391160600-19652-1-git-send-email-hare@suse.de> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: Hannes Reinecke , James Bottomley Cc: Sean Stewart , Martin George , linux-scsi@vger.kernel.org On 01/31/14 10:29, Hannes Reinecke wrote: > here's an update for the ALUA device handler I've been hoarding > for quite some time. The major bit here is the asynchronous > RTPG handling. With the original design we would treat every > LUN independently, despite the fact that several LUNs might > in fact belong to the same target port group. So any > change on one LUN will affect the others, too. > And we now can treat LUNs in 'transitioning' ALUA mode > correctly, as now we'll be blocking any I/O in the prep_fn() > until the controller is in a working state again. Also for this patch series, I think the cached INQUIRY data should be refreshed at least after an INQUIRY DATA HAS CHANGED unit attention code has been received. Bart.