On 10/14/20 6:52 AM, Vladimir Sementsov-Ogievskiy wrote:
>> docs/interop/nbd.txt | 27 ++---
>
> [..]
>
>> +In the allocation depth context, bits 0 and 1 form a tri-state value:
>> +
>> + bits 0-1: 00: NBD_STATE_DEPTH_UNALLOC, the extent is unallocated
>> + 01: NBD_STATE
10.10.2020 00:55, Eric Blake wrote:
'qemu-img map' provides a way to determine which extents of an image
come from the top layer vs. inherited from a backing chain. This is
useful information worth exposing over NBD. There is a proposal to
add a QMP command block-dirty-bitmap-populate which can