From: Daniel Bareiro <daniel-listas@gmx.net>
To: KVM General <kvm@vger.kernel.org>
Subject: Re: Problem booting guest with Linux 2.6.3x
Date: Tue, 13 Oct 2009 12:41:16 -0300 [thread overview]
Message-ID: <20091013154116.GE5358@defiant.freesoftware.org> (raw)
In-Reply-To: <4AD0B1E8.5050000@msgid.tls.msk.ru>
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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?
> 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.
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/patches/debian/drivers-ata-ata_piix-postpone-pata.patch?revision=13847&view=markup
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prev parent reply other threads:[~2009-10-13 15:42 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-07 2:24 Problem booting guest with Linux 2.6.3x Daniel Bareiro
2009-10-07 4:40 ` Alex Williamson
2009-10-07 10:23 ` Daniel Bareiro
2009-10-07 11:12 ` Michael Tokarev
2009-10-10 15:45 ` Daniel Bareiro
2009-10-10 16:10 ` Michael Tokarev
2009-10-13 15:41 ` Daniel Bareiro [this message]
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