Am 12.01.2016 um 19:56 hat Daniel P. Berrange geschrieben: > When opening an image it is useful to know whether the caller > intends to perform I/O on the image or not. In the case of > encrypted images this will allow the block driver to avoid > having to prompt for decryption keys when we merely want to > query header metadata about the image. eg qemu-img info > > Signed-off-by: Daniel P. Berrange <berra...@redhat.com>
Would it be worth adding assertions to the block layer I/O functions (most importantly, bdrv_aligned_preadv/pwritev) that this flag isn't set? Kevin
