[Qemu-block] BLOCK_STATUS extension

[Vladimir Sementsov-Ogievskiy]

Hi all.

Just note: looks like we allow zero-sized metadata context name. Is it ok?

• NBD_REP_META_CONTEXT (4)

  A description of a metadata context. Data:

  • 32 bits, NBD metadata context ID.
  • String, name of the metadata context. This is not required to be a human-readable string, but it MUST be valid UTF-8 data.

-- 
Best regards,
Vladimir