There are use cases when the existing disks (i.e. LVM) are wanted to be used with advanced features. For this purpose QEMU allows data-file feature for qcow2 files: metadata is kept in the qcow2 file like usual, but guest data is written to an external file. These patches enable support for this feature in libvirt. Nikolai Barybin (3): conf: add data-file feature and related fields to virStorageSource storage: add qcow2 filename parsing from header qemu: enable qcow2 data-file attach to VM on start src/conf/storage_source_conf.c | 8 ++++ src/conf/storage_source_conf.h | 5 ++ src/qemu/qemu_block.c | 45 ++++++++++++++++++ src/qemu/qemu_cgroup.c | 3 ++ src/qemu/qemu_namespace.c | 6 +++ src/storage_file/storage_file_probe.c | 66 +++++++++++++++++++++++---- src/storage_file/storage_source.c | 38 ++++++++++++++- 7 files changed, 160 insertions(+), 11 deletions(-) -- 2.43.5
