[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt
From: |
Gleb Natapov |
Subject: |
Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt |
Date: |
Mon, 26 Mar 2012 14:03:21 +0200 |
On Mon, Mar 26, 2012 at 01:59:05PM +0200, Avi Kivity wrote:
> On 03/26/2012 01:24 PM, Jiri Denemark wrote:
> > ...
> > > > The command line becomes unstable if you use -nodefconfig.
> > >
> > > -no-user-config solves this but I fully expect libvirt would continue to
> > > use
> > > -nodefconfig.
> >
> > Libvirt uses -nodefaults -nodefconfig because it wants to fully control how
> > the virtual machine will look like (mainly in terms of devices). In other
> > words, we don't want any devices to just magically appear without libvirt
> > knowing about them. -nodefaults gets rid of default devices that are built
> > directly in qemu. Since users can set any devices or command line options
> > (such as enable-kvm) into qemu configuration files in @SYSCONFDIR@, we need
> > to
> > avoid reading those files as well. Hence we use -nodefconfig. However, we
> > would still like qemu to read CPU definitions, machine types, etc. once they
> > become externally loaded configuration (or however we decide to call it).
> > That
> > said, when CPU definitions are moved into @DATADIR@, and -no-user-config is
> > introduced, I don't see any reason for libvirt to keep using -nodefconfig.
> >
> > I actually like
> > -no-user-config
> > more than
> > -nodefconfig -readconfig @DATADIR@/...
> > since it would avoid additional magic to detect what files libvirt should
> > explicitly pass to -readconfig but basically any approach that would allow
> > us
> > to do read files only from @DATADIR@ is much better than what we have with
> > -nodefconfig now.
>
> That's how I see it as well.
>
+1
except that instead of -no-user-config we can do what most other
programs do. If config file is specified during invocation default one
is not used. After implementing -no-user-config (or similar) we can drop
-nodefconfig entirely since its only user will be gone it its semantics
is not clear.
--
Gleb.
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt, (continued)
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt, Avi Kivity, 2012/03/25
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt, Anthony Liguori, 2012/03/25
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt, Avi Kivity, 2012/03/25
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt, Anthony Liguori, 2012/03/25
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt, Avi Kivity, 2012/03/26
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt, Gleb Natapov, 2012/03/26
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt, Anthony Liguori, 2012/03/26
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt, Eduardo Habkost, 2012/03/26
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt, Jiri Denemark, 2012/03/26
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt, Avi Kivity, 2012/03/26
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt,
Gleb Natapov <=
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt, Eduardo Habkost, 2012/03/26
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt, Anthony Liguori, 2012/03/26
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt, Gleb Natapov, 2012/03/25
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt, Anthony Liguori, 2012/03/25
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt, Avi Kivity, 2012/03/25
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt, Anthony Liguori, 2012/03/25
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt, Avi Kivity, 2012/03/25
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt, Anthony Liguori, 2012/03/25
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt, Avi Kivity, 2012/03/25
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt, Anthony Liguori, 2012/03/26