1:12 p.m.
I guess this may affect the qemu driver in future ... Thanks to
Markus Armbruster for bringing this to my/our attention.
commit 80f52a6694423da7a40e2ec39e14a5817184c7ef
Author: Jan Kiszka <>
Date: Sat Jul 23 12:39:46 2011 +0200
Deprecate -M command line options
Superseded by -machine. Therefore, this patch removes -M from the help
list and pushes -machine at the same place in the output.
commit 9052ea6bf4962b1342aa56d4341bb55176ed9e45
Author: Jan Kiszka <>
Date: Sat Jul 23 12:38:37 2011 +0200
Generalize -machine command line option
-machine somehow suggests that it selects the machine, but it doesn't.
Fix that before this command is set in stone.
Actually, -machine should supersede -M and allow to introduce arbitrary
per-machine options to the command line. That will change the internal
realization again, but we will be able to keep the user interface
stable.
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
virt-df lists disk usage of guests without needing to install any
software inside the virtual machine. Supports Linux and Windows.
http://et.redhat.com/~rjones/virt-df/
3:57 p.m.
On 07/25/2011 11:12 AM, Richard W.M. Jones wrote:
I guess this may affect the qemu driver in future ... Thanks to
Markus Armbruster for bringing this to my/our attention.
As long as QEMU supports -M ? it should not be a problem. The -M option
is not scraped from -help output.
Paolo
12:22 a.m.
On 07/25/2011 05:57 AM, Paolo Bonzini wrote:
On 07/25/2011 11:12 AM, Richard W.M. Jones wrote:
> I guess this may affect the qemu driver in future ... Thanks to
> Markus Armbruster for bringing this to my/our attention.
As long as QEMU supports -M ? it should not be a problem. The -M option
is not scraped from -help output.
If -M is going away, then libvirt _should_ scrape -help output to see
whether to use -M or -machine, rather than blindly using -M.
--
Eric Blake eblake(a)redhat.com +1-801-349-2682
Libvirt virtualization library http://libvirt.org
12:53 p.m.
On 07/25/2011 10:22 PM, Eric Blake wrote:
>>
>
> As long as QEMU supports -M ? it should not be a problem. The -M option
> is not scraped from -help output.
If -M is going away, then libvirt _should_ scrape -help output to see
whether to use -M or -machine, rather than blindly using -M.
-M going away will take a while (and will likely never happen).
Paolo
8:02 p.m.
On 07/26/2011 02:53 AM, Paolo Bonzini wrote:
On 07/25/2011 10:22 PM, Eric Blake wrote:
>>>
>>
>> As long as QEMU supports -M ? it should not be a problem. The -M option
>> is not scraped from -help output.
>
> If -M is going away, then libvirt _should_ scrape -help output to see
> whether to use -M or -machine, rather than blindly using -M.
-M going away will take a while (and will likely never happen).
While that may be true, we've already been bitten in the past by using
undocumented commands. See for example commit e997c268efd, where
qemu-img silently quit supporting -e, but libvirt had been using it
under the assumption that it would continue to work.
I'll work up a patch for this.
--
Eric Blake eblake(a)redhat.com +1-801-349-2682
Libvirt virtualization library http://libvirt.org
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Richard W.M. Jones