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xen-users
Re: [Xen-users] older version can not work after new version is install
2010/2/25 刘楚高 <frank1985876@xxxxxxxxx>:
> I installed xen 3.4.2 by source package and created new initrd img and
> vmlinuz for v3.4.2.
> So I boot the older version with older initrd img and vmlinuz, and I don't
> think the installation of v3.4.2 would affect the older one.
> Am I right?
There are several pieces required to have a fully functional Xen dom0 system:
- the xen hypervisor (xen.gz)
- the dom0 kernel (including initrd)
- the xen userland (i.e. xm)
You can easily have several versions of hypervisor and dom0 kernel,
but usually there's only one version of xen userland binary. When you
install from source, you overwrite the old Centos xen userland. Thus
you can't use the old hypervisor version anymore, as the userland
tools doesn't match.
IIRC Debian created a workaround that allows several versions of xen
userland to coexist, but this is not in official source, and it's
kinda complicated.
--
Fajar
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