[libvirt] [PATCH 0/5] UEFI loader NVRAM image in Qcow2 format

[Dmitry Andreev]

Found this message right after I'v sent the patch.
https://www.redhat.com/archives/libvir-list/2015-January/msg00446.html

On 08.12.2015 17:11, Dmitry Andreev wrote:
> Libvirt allows to specify a path to an image file that will be used
> as a var storage for UEFI firmware.
>
> <nvram>/var/lib/libvirt/nvram/guest_VARS.fd</nvram>
>
> By default this image is created as a copy of a master image.
> The master image and it's copy are stored in 'raw' format.
>
> Qemu isn't able to create snapshot for an image in 'raw' format.
> That makes snapshotting impossible for any UEFI configuration.
>
> If the image with UEFI nvram is converted to Qcow2 format (and qemu
> command is modified appropriately), snapshotting works fine.
>
> In the patch-set I introduce 'format' attribute for nvram tag that
> specifies nvram image file format. The patch-set doesn't contains
> docs and test in v1.
>
> Dmitry Andreev (5):
>    storage: split virStorageBackendCreateExecCommand in two functions
>    storage: refactor: split out image creating tool search function
>    storage: add new function virStorageBackendConvertImage
>    conf: add 'format' attribute to domain/os/nvram element
>    qemu: add support for os.nvram 'format' attribute
>
>   docs/schemas/domaincommon.rng |   8 ++
>   src/conf/domain_conf.c        |  18 +++++
>   src/conf/domain_conf.h        |   1 +
>   src/qemu/qemu_command.c       |   8 +-
>   src/qemu/qemu_process.c       |  17 ++++
>   src/storage/storage_backend.c | 181 ++++++++++++++++++++++++++----------------
>   src/storage/storage_backend.h |   5 ++
>   7 files changed, 167 insertions(+), 71 deletions(-)
>