[libvirt] [PATCH V3 1/2] Intorduce file descriptor set for QEMU domains

[Daniel P. Berrange]

On Mon, Feb 04, 2013 at 07:12:37PM -0500, Stefan Berger wrote:
> Create field in virDomainDeviceInfo structure to hold
> file descriptor set the device is associated with. Have
> the number written into the Device Info XML and parsed
> from the XML.
> 
> Remember the next-toy use file descriptor set in the QEMU
> private domain structure.
> Upon libvirt restart determine the maximum file descriptor
> set used in the Device Info XML and remember the
> next-to-use file descriptor set in the QEMU private domain
> structure.
> 
> Upon termination of a domain, reset the next-to-use file
> descriptor set to its initial value '1'.
> 
> Stefan Berger <stefanb at linux.vnet.ibm.com>
> 
> ---
>  src/conf/capabilities.h |    5 ++++-
>  src/conf/domain_conf.c  |   20 +++++++++++++++++---
>  src/conf/domain_conf.h  |    1 +
>  src/lxc/lxc_domain.c    |    3 ++-
>  src/qemu/qemu_domain.c  |   23 ++++++++++++++++++++++-
>  src/qemu/qemu_domain.h  |    2 ++
>  src/qemu/qemu_process.c |    2 ++
>  7 files changed, 50 insertions(+), 6 deletions(-)

I really don't like the fact that we're modifying the virDomainDef
structs, which are intended to hold static config description, to
also hold QEMU specific dynamic state. We did this in the past
before we had the per-driver 'privateData' associated with
virDomainObjPtr instances.

I really want to see this stuff remain entirely in the QEMU codebase
and not pollute the generic domain_conf code


Daniel
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