Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754874Ab2FEGuY (ORCPT ); Tue, 5 Jun 2012 02:50:24 -0400 Received: from mail-bk0-f46.google.com ([209.85.214.46]:64638 "EHLO mail-bk0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753819Ab2FEGuW (ORCPT ); Tue, 5 Jun 2012 02:50:22 -0400 Message-ID: From: "Victor Miasnikov" To: "Jonathan Nieder" , "Greg KH" Cc: "KY Srinivasan" , , , "Mike Sterling" References: <20120527010903.GA18244@kroah.com> <20120528203518.GA12623@kroah.com> <5EBD7E368EFE4B5CABF4AC528058A4DB@local.st.by> <20120601092017.GE22821@kroah.com> <59CBCFF13ABD41B682835DD5E4851BC1@local.st.by> <20120601162629.GA11812@kroah.com> <426367E2313C2449837CD2DE46E7EAF90710C295@SN2PRD0310MB382.namprd03.prod.outlook.com> <20120602012249.GA7783@kroah.com> <20120605045950.GB3118@burratino> Subject: ToDo: backport to v3.4 , v3.3 , v3.2 patches 1b) db63a4c8115a libata 1) cd006086fa5d ata_piix: defer disks to the Hyper-V drivers by default Fw: use hv_storvsc instead of ata_piix for IDE disks ( but not for the CD-ROM) Date: Tue, 5 Jun 2012 09:50:16 +0300 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.3790.4548 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.4862 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2441 Lines: 93 Hi! >>> use hv_storvsc instead of ata_piix to handle the IDE disks devices ( but not for the CD-ROM) J.N.> the problem is that ata_piix and hv_storvscboth claim the (virtual) hard disk. Yes: { About bug fixed by patches: >> see tranlate from Russian language issue described by Maksim Kramarenko: >> http://lists.debian.org/debian-russian/2012/01/msg00324.html >>> After [VVM: turn On in kernel source] Hyper-V modules [compile and >>> start use], a hard disk was determined as 2 with the same UUID. } J.N.> { A workaround is to blacklist the ata_piix module. However, that means losing access to CD and DVD drives which are exposed by ata_piix and not hv_storvsc. } Yes: work without CD-ROM is not super-fine, { best backport patches from v3.5 ( de-facto reincarnation _tested_(!) patches from Ubuntu v12.04 and/or OpenSUSE ) : J.N.> { The patch works by making ata_piix skip the disk during enumeration if hv_storvsc is enabled as a built-in driver or module. } >> > VVM > > > Hyper-V admins need _worked_ Linux v3.4.X / v3.3.X / v3.2.X i.e. need backport to all actual version after 3.1 cd006086fa5d ata_piix: defer disks to the Hyper-V drivers by default and its prerequisite db63a4c8115a libata: add a host flag to ignore detected ATA devices } > --- I think this is what Greg was asking for. I supose . . . Thanks, Best regards, Victor Miasnikov Blog: http://vvm.blog.tut.by/ P.S. > Thanks No problem :-) > Hoping that clarifies, Yes: very good description of problem and possible solution Big thanks! -- ----- Original Message ----- From: "Jonathan Nieder" To: . . . Cc: . . . Sent: Tuesday, June 05, 2012 7:59 AM Subject: Re: [PATCH 2/2] ata_piix: defer disks to the Hyper-V drivers by default . . . If I understand correctly, the problem is that ata_piix and hv_storvscboth claim the (virtual) hard disk. That sounds worth fixing. The patch works by making ata_piix skip the disk during enumeration if hv_storvsc is enabled as a built-in driver or module. A workaround is to blacklist the ata_piix module. However, that means losing access to CD and DVD drives which are exposed by ata_piix and not hv_storvsc. -- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/