From mboxrd@z Thu Jan 1 00:00:00 1970 From: Boaz Harrosh Subject: Re: DIF/DIX updates for 2.6.32 Date: Wed, 26 Aug 2009 14:54:22 +0300 Message-ID: <4A95226E.8030504@panasas.com> References: <1251267481-24135-1-git-send-email-martin.petersen@oracle.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Return-path: Received: from ip67-152-220-67.z220-152-67.customer.algx.net ([67.152.220.67]:35094 "EHLO daytona.int.panasas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753834AbZHZMJh (ORCPT ); Wed, 26 Aug 2009 08:09:37 -0400 In-Reply-To: <1251267481-24135-1-git-send-email-martin.petersen@oracle.com> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: "Martin K. Petersen" Cc: James.Bottomley@hansenpartnership.com, dgilbert@interlog.com, Ihab.Hamadi@emulex.com, James.Smart@emulex.com, linux-scsi@vger.kernel.org On 08/26/2009 09:17 AM, Martin K. Petersen wrote: > Updates to the DIF/DIX code for 2.6.32: > > - Add support for 32-byte CDBs to SCSI layer > > - Deprecate the DIX CONVERT ops > > - Detach pure DIF support from CONFIG_BLK_DEV_INTEGRITY > > - Add support for DIF Type 2 devices in sd > > - Add DIF Type 2 support to scsi_debug > Hi Martin. I have not followed your work very closely so please forgive me if I'm asking dumb questions. I've meant to be asking you about something for a while. With an sd disk supporting DIF/DIX, do you have this problems? http://thread.gmane.org/gmane.linux.kernel.device-mapper.devel/5392 [Desynchronizing dm-raid1] I know that we also have the above problem with iscsi and data-digest such that when we come to sign the data it might change on us before the target receives it. (Personally I'm working on a Mirror system over osd's and will have to test for this problem as well. I anticipate a need to copy the data before submission like the dm-raid1 does) Best regards Boaz