[PATCH v2 0/2] Introduce hardware UUID (hwuuid) element

Following on from the discussions at [1] and more recently [2], this series introduces a new hardware UUID (hwuuid) element that allows an external UUID to be provided to the guest, as opposed to the libvirt domain UUID. The use case for this feature is to allow a domain to cloned and then restarted without changing its guest-visible UUID e.g. via dmidecode. Patch 1 introduces the new hardware UUID (hwuuid) element along with an implementation for the QEMU driver, whilst patch 2 adds additional tests to ensure the hwuuid functionality is working as expected. Note that from reading the source it doesn't appear as if all virtualisation platforms will support this feature: I've included the relevant changes for the QEMU driver since that is what we use here at Nutanix. Signed-off-by: Mark Cave-Ayland <mark.caveayland(a)nutanix.com&gt; [1] https://lists.libvirt.org/archives/list/devel@lists.libvirt.org/thread/YX... [2] https://lists.libvirt.org/archives/list/devel@lists.libvirt.org/thread/HG... v2: - Rebase onto master - Rework if() logic in virSysinfoSystemParseXML() in patch 1 as suggested by Daniel - Add R-B tag from Daniel to patch 2 Mark Cave-Ayland (2): conf: introduce hardware UUID (hwuuid) element qemuxmlconftest: add tests for new hardware UUID (hwuuid) element docs/formatdomain.rst | 7 +++ src/conf/domain_conf.c | 43 ++++++++++++++++--- src/conf/domain_conf.h | 1 + src/conf/schemas/domaincommon.rng | 5 +++ src/qemu/qemu_command.c | 6 ++- ...hwuuid-smbios-uuid-match.x86_64-latest.err | 1 + .../hwuuid-smbios-uuid-match.xml | 36 ++++++++++++++++ .../qemuxmlconfdata/hwuuid.x86_64-latest.args | 35 +++++++++++++++ .../qemuxmlconfdata/hwuuid.x86_64-latest.xml | 41 ++++++++++++++++++ tests/qemuxmlconfdata/hwuuid.xml | 30 +++++++++++++ tests/qemuxmlconftest.c | 3 ++ 11 files changed, 202 insertions(+), 6 deletions(-) create mode 100644 tests/qemuxmlconfdata/hwuuid-smbios-uuid-match.x86_64-latest.err create mode 100644 tests/qemuxmlconfdata/hwuuid-smbios-uuid-match.xml create mode 100644 tests/qemuxmlconfdata/hwuuid.x86_64-latest.args create mode 100644 tests/qemuxmlconfdata/hwuuid.x86_64-latest.xml create mode 100644 tests/qemuxmlconfdata/hwuuid.xml -- 2.43.0