[libvirt] [PATCH v6 06/13] qemu: Add qemu command line generation for a VxHS block device

Peter Krempa pkrempa at redhat.com
Thu Aug 31 10:39:28 UTC 2017


On Wed, Aug 30, 2017 at 18:46:06 -0400, John Ferlan wrote:
> From: Ashish Mittal <Ashish.Mittal at veritas.com>
> 
> The VxHS block device will only use the newer formatting options and
> avoid the legacy URI syntax.
> 
> An excerpt for a sample QEMU command line is:
> 
>   -drive file.driver=vxhs,file.vdisk-id=eb90327c-8302-4725-9e1b-4e85ed4dc251,\
>    file.server.0.type=tcp,file.server.0.host=192.168.0.1,\
>    file.server.0.port=9999,format=raw,if=none,id=drive-virtio-disk0,cache=none \
>   -device virtio-blk-pci,bus=pci.0,addr=0x4,drive=drive-virtio-disk0,\
>    id=virtio-disk0
> 
> Update qemuxml2argvtest with a simple test.
> 
> Signed-off-by: Ashish Mittal <Ashish.Mittal at veritas.com>
> Signed-off-by: John Ferlan <jferlan at redhat.com>
> ---

[...]

>  src/qemu/qemu_block.c                              | 48 +++++++++++++++++++++-
>  src/qemu/qemu_block.h                              |  3 +-
>  src/qemu/qemu_command.c                            | 12 +++++-
>  src/qemu/qemu_parse_command.c                      | 16 +++++++-
>  .../qemuxml2argv-disk-drive-network-vxhs.args      | 27 ++++++++++++
>  tests/qemuxml2argvtest.c                           |  1 +
>  6 files changed, 101 insertions(+), 6 deletions(-)
>  create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-drive-network-vxhs.args
> 
> diff --git a/src/qemu/qemu_block.c b/src/qemu/qemu_block.c
> index d07269f..cb765ab 100644
> --- a/src/qemu/qemu_block.c
> +++ b/src/qemu/qemu_block.c
> @@ -482,6 +482,45 @@ qemuBlockStorageSourceGetGlusterProps(virStorageSourcePtr src)
>  }
>  
>  
> +static virJSONValuePtr
> +qemuBlockStorageSourceGetVxHSProps(virStorageSourcePtr src,
> +                                   virQEMUCapsPtr qemuCaps)

Please don't drag 'caps' into the options formatter. Add a function that
validates whether the disk backend is supported (it should accept a
virStorageSourcePtr and be called somewhere in
qemuProcessStartValidate).

The 'json' syntax may be used even for qemu-img's arguments and thus
would make this non-reusable.

Rest looks okay.
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