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[Qemu-devel] [PATCH 0/3] nbd: Drop BDS backpointer

From: Max Reitz
Subject: [Qemu-devel] [PATCH 0/3] nbd: Drop BDS backpointer
Date: Mon, 2 Feb 2015 16:40:35 -0500

Right now, bdrv_swap() on NBD BDSs results in a segmentation fault
pretty much all of the time. This series fixes this.

Note that this is not a common case, as bdrv_swap() is generally only
performed on root BDSs (there are exceptions, though) and NBD BDSs
normally have a format BDS above them. However, due to misconfiguration
(or maybe it is not even a misconfiguration, but just a strange
configuration) these cases may indeed occur.

For the iotest to succeed, this series relies on
"iotests: Specify format for qemu-nbd".

I took the second patch in this series from my other series
"block: Rework bdrv_close_all()" (which has 21 patches itself and
depends on 64 other patches, so making this series rely on that one
probably would not have been a very good idea).

Max Reitz (3):
  nbd: Drop BDS backpointer
  iotests: Add "wait" functionality to _cleanup_qemu
  iotests: Add test for drive-mirror with NBD target

 block/nbd-client.c             | 95 ++++++++++++++++++++++--------------------
 block/nbd-client.h             | 20 ++++-----
 block/nbd.c                    | 37 +++++++---------
 tests/qemu-iotests/094         | 81 +++++++++++++++++++++++++++++++++++
 tests/qemu-iotests/094.out     | 11 +++++
 tests/qemu-iotests/common.qemu | 12 +++++-
 tests/qemu-iotests/group       |  1 +
 7 files changed, 177 insertions(+), 80 deletions(-)
 create mode 100755 tests/qemu-iotests/094
 create mode 100644 tests/qemu-iotests/094.out


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