Re: Modifying RAM during runtime on guest

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Hi Jim.

On Wednesday, 07 October 2009 14:21:15 -0400,
Jim Paris wrote:

> > > > I noticed no-one answered this, and I just ran into the same
> > > > thing myself. As Avi pointed out earlier, it is a guest bug, and
> > > > upgrading the guest to 2.6.27 should fix it:

> > > >   http://www.mail-archive.com/kvm@xxxxxxxxxxxxxxx/msg10849.html

> > > In this moment I doesn't have Internet connectivity in my house,
> > > but, as soon as it be possible, I shall download the necessary
> > > software to compile 2.6.27 or superior and then I tell you the
> > > result of the tests.
 
> > After to have compiled Linux 2.6.30.3 using the Debian way on guest
> > Debian GNU/Linux Lenny, when trying to boot the guest with this
> > kernel, the bootstrapping is freeze on "Loading, please wait..."
> > message.
> > 
> > In logs I don't get entries of the bootstrapping process with 2.6.30
> > (I think it is because the process in itself didn't start). Can it
> > be due to a bug using 2.6.30.3 in guest with host KVM-88?
 
> 2.6.30.3 should work fine, there must be some other problem.  If you
> remove "quiet" from the boot command line you should see the kernel
> messages which may indicate the problem.  I'd also recommend just
> trying a standard prebuilt Debian kernel.

>   http://packages.debian.org/squeeze/linux-image-2.6.30-1-amd64

As we commented in this [1] thread, the problem was due to a patch that
Debian developers have applied to stock kernels enabling only libata for
the systems having a SATA controller.

For that reason the Debian stock kernel saw disks as hdX and kernels
2.6.31.2 and 2.6.30.3 compiled by myself saw disks like sdX. After
booting, with 2.6.3x, no longer panic is observed when restituting the
memory to its initial value.

Thanks for your reply.

Regards,
Daniel

[1] http://thread.gmane.org/gmane.comp.emulators.kvm.devel/41158
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