Re: [Xen-users] HVM help please

[Alexandre Kouznetsov <alk@xxxxxxxxxx>]

El 26/06/12 01:09, Ian Campbell escribió:
> On Tue, 2012-06-26 at 00:03 +0100, Alexandre Kouznetsov wrote:
> > Hello.
> >
> > El 25/06/12 17:54, Shane Johnson escribió:
> > > It would seem that for some reason with this setup it can't use
> > > vmlinuz files that compressed with bzip2.   Therefore I followed these
> > > instructions :
> > > http://old-list-archives.xen.org/archives/html/xen-users/2010-09/msg00586.html
> > > and now it is working fine.
> > What's so special in your setup?
> > Home-complied kernel or hypervisor image?
> >
> > Debian stock Xen boots bzip2-compressed Dom0 kernels just fine, :
> > # file /boot/vmlinuz-2.6.32-5-xen-amd64
> > /boot/vmlinuz-2.6.32-5-xen-amd64: Linux kernel x86 boot executable
> > bzImage, version 2.6.32-5-xen-amd64 (unknown@Deb, RO-rootFS, swap_dev
> > 0x2, Normal VGA
> bzImage != bzip2. A bzImage is a *big*zImage, big meaning that the
> kernel image can be larger than some ancient real-mode limit (~1M, I
> think). A bzImage can use one of a number of compression algorithms,
> historically gzip but bzip2, lzma and xz are also supported by the
> kernel these days -- you'd have to look in the relevant config to see
> which used by a particular image.
That was new, ty.

> I believe Debian 2.6.32 kernels used gzip.
True, CONFIG_KERNEL_GZIP=y

# grep ZIP /boot/config-2.6.32-5-xen-amd64
CONFIG_HAVE_KERNEL_GZIP=y
CONFIG_HAVE_KERNEL_BZIP2=y
CONFIG_KERNEL_GZIP=y
# CONFIG_KERNEL_BZIP2 is not set
CONFIG_RD_GZIP=y
CONFIG_RD_BZIP2=y
# CONFIG_SCSI_IZIP_EPP16 is not set
# CONFIG_SCSI_IZIP_SLOW_CTR is not set
CONFIG_DECOMPRESS_GZIP=y
CONFIG_DECOMPRESS_BZIP2=y


--
Alexandre Kouznetsov
Systems Officer
Ondore, S.A. de C.V.
Tel. +52(55) 5559-0090
E-mail alk@xxxxxxxxxx



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