[libvirt] [PATCHv3 30/36] qemu: monitor: Add argument for specifying backing name for block commit

[Eric Blake]

On 05/30/2014 02:37 AM, Peter Krempa wrote:
> To allow changing the name that is recorded in the overlay of the TOP
> image used in a block commit operation, we need to specify the backing
> name to qemu. This is done via the "backing-file" attribute to the
> block-commit commad.
> ---
>  src/qemu/qemu_driver.c       | 1 +
>  src/qemu/qemu_monitor.c      | 9 ++++++---
>  src/qemu/qemu_monitor.h      | 1 +
>  src/qemu/qemu_monitor_json.c | 2 ++
>  src/qemu/qemu_monitor_json.h | 1 +
>  tests/qemumonitorjsontest.c  | 2 +-
>  6 files changed, 12 insertions(+), 4 deletions(-)

We need a capability in qemu_capabilities.[ch] first; that way we can
give better error messages if qemu is too old to support use of this
feature.

ACK to this patch; it will be the caller qemu_driver that needs to pay
attention to the capability.

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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