[PATCH v2 0/5] Exposing backing-chain allocation over NBD

[Eric Blake <eblake@redhat.com>]

v1 was here: https://lists.gnu.org/archive/html/qemu-devel/2020-09/msg09623.htm
l

Based-on: <20200924152717.287415-1-kwolf@redhat.com>
(block/export: Add infrastructure and QAPI for block exports)

Also available at:
https://repo.or.cz/qemu/ericb.git/shortlog/refs/tags/nbd-alloc-depth-v2

Since then:
- rebase on Kevin's work
- add new patch to fix qemu-nbd SIGINT (conflicts with Stefan's work,
we can either rebase his on mine or drop mine if his goes in first)
- split out fix for handling NUL bytes from client [Vladimir]
- further cleanups of query parsing [Vladimir]
- more documentation of how we could also expose actual depth in
remaining bits of the context reply [Rich]

001/5:[down] 'qemu-nbd: Honor SIGINT and SIGHUP'
002/5:[down] 'nbd/server: Reject embedded NUL in NBD strings'
003/5:[0139] [FC] 'nbd: Simplify meta-context parsing'
004/5:[0035] [FC] 'nbd: Add new qemu:allocation-depth metacontext'
005/5:[0038] [FC] 'nbd: Add 'qemu-nbd -A' to expose allocation depth'

Eric Blake (5):
  qemu-nbd: Honor SIGINT and SIGHUP
  nbd/server: Reject embedded NUL in NBD strings
  nbd: Simplify meta-context parsing
  nbd: Add new qemu:allocation-depth metacontext
  nbd: Add 'qemu-nbd -A' to expose allocation depth

 docs/interop/nbd.txt       |  22 ++-
 docs/tools/qemu-nbd.rst    |   6 +
 qapi/block-core.json       |   7 +-
 qapi/block-export.json     |   6 +-
 include/block/nbd.h        |   8 +-
 blockdev-nbd.c             |   2 +
 nbd/server.c               | 324 +++++++++++++++++++++----------------
 qemu-nbd.c                 |  20 ++-
 tests/qemu-iotests/309     |  73 +++++++++
 tests/qemu-iotests/309.out |  22 +++
 tests/qemu-iotests/group   |   1 +
 11 files changed, 342 insertions(+), 149 deletions(-)
 create mode 100755 tests/qemu-iotests/309
 create mode 100644 tests/qemu-iotests/309.out

-- 
2.28.0