a8e0fdd715
This introduces qemu-img create option for sheepdog which allows the data to be fully preallocated (note that sheepdog always preallocates metadata). The option is disabled by default and you need to enable it like the following: qemu-img create sheepdog:test -o preallocation=full 1G Signed-off-by: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp> Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Kevin Wolf <kwolf@redhat.com>