If VIR_STORAGE_VOL_CREATE_REFLINK is specified, try to use btrfs COW copy; If btrfs COW copy is not supported, fall back to normal copy. Chen Hanxiao (2): introduce btrfsCloneFile for COW copy storage: try to perform btrfs clone if possible include/libvirt/libvirt-storage.h | 1 + src/storage/storage_backend.c | 65 ++++++++++++++++++++++++++++++++++----- src/storage/storage_backend_fs.c | 8 +++-- src/storage/storage_driver.c | 4 ++- 4 files changed, 68 insertions(+), 10 deletions(-) -- 1.9.3 -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list