From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hannes Reinecke Subject: Re: [PATCH] scsi: vpd pages are mandatory for SPC-2 Date: Wed, 16 Mar 2016 09:12:33 +0100 Message-ID: <56E91571.6000900@suse.com> References: <1457703965-71028-1-git-send-email-hare@suse.de> <56E7B9AA.3020302@suse.de> <20160315074232.GA10944@lst.de> <56E84419.3040109@interlog.com> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from mx2.suse.de ([195.135.220.15]:36245 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S966139AbcCPIMk (ORCPT ); Wed, 16 Mar 2016 04:12:40 -0400 In-Reply-To: <56E84419.3040109@interlog.com> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: dgilbert@interlog.com, Christoph Hellwig , Hannes Reinecke Cc: "Martin K. Petersen" , linux-scsi@vger.kernel.org, James Bottomley On 03/15/2016 06:19 PM, Douglas Gilbert wrote: > On 16-03-15 08:42 AM, Christoph Hellwig wrote: >> On Tue, Mar 15, 2016 at 08:28:42AM +0100, Hannes Reinecke wrote: >>> But it feels even sillier having to whitelist every >>> standards-conformant device here; I certainly was when I figured >>> that EMC Clariion won't work properly without this patch. >>> >>> And the idea was to mark off _misbehaving_ drives, not the other wa= y >>> round. >> >> It's the idea, but it has to prove workable as well in the end. >> >> That being said I'd prefer to allow Hannes patch in and see what >> the fallout is. >=20 > I don't have many drafts archived for SPC-2 but the two that I do hav= e: > spc2r18.pdf [20000521] > spc2r20.pdf [20010718] >=20 > indicate that those two VPD pages were made mandatory right at the > end of the draft cycle for SPC-2. spc2r20.pdf was the last draft > prior to the standard and it does show them as mandatory in table 185 > on page 218. The corresponding table in spc2r18.pdf does not have > a column indicating whether the listed VPD pages are mandatory or > not (or words that I can find in the description of VPD pages 0x0 > and 0x83 to suggest they are mandatory). >=20 The point here is not so much whether the pages are mandatory, but whether access to VPD pages crashes the device. Cheers, Hannes --=20 Dr. Hannes Reinecke zSeries & Storage hare@suse.com +49 911 74053 688 SUSE LINUX GmbH, Maxfeldstr. 5, 90409 N=FCrnberg GF: F. Imend=F6rffer, J. Smithard, J. Guild, D. Upmanyu, G. Norton HRB 21284 (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