From mboxrd@z Thu Jan 1 00:00:00 1970 From: Greg Freemyer Subject: Re: TRIM vs UNMAP vs WRITE SAME and thin devices Date: Sun, 8 Feb 2009 15:06:44 -0500 Message-ID: <87f94c370902081206v71106c5fp9a7ef0400301a1ab@mail.gmail.com> References: <20090123041558.GC24652@parisc-linux.org> <4979AF62.7070409@redhat.com> <1232721777.4430.7.camel@macbook.infradead.org> <498DA052.6090605@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: David Woodhouse , James Bottomley , "Martin K. Petersen" , Matthew Wilcox , Jeff Garzik , linux-scsi@vger.kernel.org, linux-fsdevel@vger.kernel.org, "IDE/ATA development list" To: Ric Wheeler Return-path: Received: from qw-out-2122.google.com ([74.125.92.24]:56730 "EHLO qw-out-2122.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753299AbZBHUGq (ORCPT ); Sun, 8 Feb 2009 15:06:46 -0500 In-Reply-To: <498DA052.6090605@redhat.com> Sender: linux-fsdevel-owner@vger.kernel.org List-ID: On Sat, Feb 7, 2009 at 9:53 AM, Ric Wheeler wrote: > > I have been poked at by some vendors about the status of our support for the > virtually/thinly provisioned luns since they are getting close to being able > to test with real devices. I found a list of T10 activities just since just Dec. 1, 2008 and it is a bit overwhelming. (ie. 08-356r4 is but one of many recent reports) http://www.t10.org/new_a.htm For those of us that don't live and breath the SCSI spec, is there an overview site describing what is going on. Maybe: 09-059r0 T10 Project Summary - January 2009 John Lohmeyer PDF (34729) 2009/01/22 http://www.t10.org/cgi-bin/ac.pl?t=d&f=09-059r0.pdf I have not read any of the Post Dec. 1 stuff including the above project summary, but based on the names these seem potentially relevant: 09-055r0 T13 Liaison Report January 09 Dan Colegrove PDF (4770) 2009/01/15 08-356r4 SBC-3: WRITE SAME unmap bit David L. Black PDF (56608) 2008/12/10 08-356r5 SBC-3 Thin Provisioning Commands Fred Knight, David L. Black PDF (387549) 2009/01/15 08-149r7 SBC - Thin Provisioning Frederick Knight PDF (281001) 2008/12/08 08-149r8 SBC - Thin Provisioning Frederick Knight PDF (281387) 2009/01/09 09-011r1 SBC-3 Thin Provisioning Threshold Notification Frederick Knight PDF (32757) 2009/01/09 08-149r9 SBC - Thin Provisioning Frederick Knight PDF (353888) 2009/01/15 09-012r0 Minutes: CAP - Thin Provisioning 12/4 con-call Frederick Knight PDF (38063) 2008/12/08 09-011r0 SBC-3 Thin Provisioning Threshold Notification Frederick Knight PDF (48523) 2008/12/08 08-396r3 SPC-4: Reporting support for all DIF types George Penokie PDF (85358) 2009/01/14 09-058r0 Agenda for T10 Meeting #90 March 2009 John Lohmeyer PDF (61437) 2009/01/19 09-020r0 T11 Liaison Report, December 2008 Robert Snively PDF (13117) 2008/12/19 09-032r0 Minutes of T10 Plenary Meeting #89 - January 15, 2009 Weber & Lohmeyer HTM (141593) 2009/01/23 09-032r0 Minutes of T10 Plenary Meeting #89 - January 15, 2009 Weber & Lohmeyer PDF (344891) 2009/01/23 Greg -- Greg Freemyer Litigation Triage Solutions Specialist http://www.linkedin.com/in/gregfreemyer First 99 Days Litigation White Paper - http://www.norcrossgroup.com/forms/whitepapers/99%20Days%20whitepaper.pdf The Norcross Group The Intersection of Evidence & Technology http://www.norcrossgroup.com