From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Bareiro Subject: Re: Problem booting guest with Linux 2.6.3x Date: Tue, 13 Oct 2009 12:41:16 -0300 Message-ID: <20091013154116.GE5358@defiant.freesoftware.org> References: <20091007022454.GA17404@defiant.freesoftware.org> <7162ab20910062140w70fad142tabd301a35368ff5d@mail.gmail.com> <20091007102339.GA32373@defiant.freesoftware.org> <4ACC779A.1030604@msgid.tls.msk.ru> <20091010154551.GA29059@defiant.freesoftware.org> <4AD0B1E8.5050000@msgid.tls.msk.ru> Reply-To: dbareiro@gmx.net Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="AjmyJqqohANyBN/e" To: KVM General Return-path: Received: from mail.gmx.net ([213.165.64.20]:59568 "HELO mail.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1753396AbZJMPmI (ORCPT ); Tue, 13 Oct 2009 11:42:08 -0400 Received: from defiant (defiant.freesoftware.org [10.1.0.65]) by hermes.freesoftware.org (Postfix) with ESMTP id BAFBC446 for ; Tue, 13 Oct 2009 12:41:03 -0300 (ART) Content-Disposition: inline In-Reply-To: <4AD0B1E8.5050000@msgid.tls.msk.ru> Sender: kvm-owner@vger.kernel.org List-ID: --AjmyJqqohANyBN/e Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi Michael. On Saturday, 10 October 2009 20:10:16 +0400, Michael Tokarev wrote: > >>>But according to it seems, I could verify that the disks that are > >>>passed with -hdX in KVM-88 are mapped in 2.6.31.2 guests like > >>>SATA/SCSI devices. With Linux stock 2.6.26 these are mapped like > >>>IDE disks. Can it be due to some change in the kernel code related > >>>with KVM? > >>It has nothing to do with kvm. It's different kernel options, all > >>kernels since very early 2.6.x are able to see ide disks as hdX or > >>sdX, depending on the kernel options and modules loaded. There are > >>2 drivers for each IDE controller - IDE/ATA one, which creates hdX, > >>and PATA one which creates sdX. > >According to I was investigating, I have the impression that the > >newest kernels delegate this disks denomination to the use of libata. > >It would be that in 2.6.26 Debian stock kernel not yet was productive > >to be in experimental phase? =20 > Debian "stock" kernel config does not enable ata devices, only ide ones. Apparently the Debian GNU/Linux stock kernels has applied a patch [1] which causes that libata only is enabled for SATA controllers.=20 It draws attention to me that being 2.6.31 the last branch of stable kernel from kernel.org, the Debian developers are applying this patch. I had thought that at the moment libata was sufficiently stable. Thanks for your reply. Regards, Daniel [1] http://svn.debian.org/viewsvn/kernel/dists/trunk/linux-2.6/debian/patch= es/debian/drivers-ata-ata_piix-postpone-pata.patch?revision=3D13847&view=3D= markup --=20 Fingerprint: BFB3 08D6 B4D1 31B2 72B9 29CE 6696 BF1B 14E6 1D37 Powered by Debian GNU/Linux Squeeze - Linux user #188.598 --AjmyJqqohANyBN/e Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) iEYEARECAAYFAkrUn5wACgkQZpa/GxTmHTekRwCfZ06bhvPBN7VApN/6toIX2o8K OkUAmwaaeAN4HiWHtRNGpcfufmVEtLfm =Rzuq -----END PGP SIGNATURE----- --AjmyJqqohANyBN/e--