[libvirt] [PATCHv2 0/2] add support for btrfs COW copy

If VIR_STORAGE_VOL_CREATE_REFLINK is specified, try to use btrfs COW copy; v2: check BTRFS_IOC_CLONE in configure.ac error out if COW copy is not supported Chen Hanxiao (2): storage: introduce btrfsCloneFile() for COW copy storage: try to perform btrfs clone if possible configure.ac | 12 +++++++ include/libvirt/libvirt-storage.h | 1 + src/storage/storage_backend.c | 67 +++++++++++++++++++++++++++++++++++---- src/storage/storage_backend_fs.c | 8 +++-- src/storage/storage_driver.c | 4 ++- 5 files changed, 82 insertions(+), 10 deletions(-) -- 2.1.0