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From: Max Reitz <mreitz@redhat.com>
To: qemu-block@nongnu.org
Cc: qemu-devel@nongnu.org, Kevin Wolf <kwolf@redhat.com>
Subject: Re: [Qemu-devel] [PATCH 0/3] iotests: Allow 147 to be run concurrently
Date: Thu, 31 Jan 2019 02:01:01 +0100	[thread overview]
Message-ID: <b0c2b109-b06d-7385-a6cf-3d24b9d15da0@redhat.com> (raw)
In-Reply-To: <20181221234750.23577-1-mreitz@redhat.com>

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On 22.12.18 00:47, Max Reitz wrote:
> 147 currently cannot be run concurrently for two reasons:
> 
> (1) It creates TCP/IP NBD servers on a fixed port.
> 
> (2) It uses a mix of "0.0.0.0", "localhost", and "::1" as host addresses
>     to bind to.  As explained in the commit messages of patches 2 and 3,
>     this results in it potentially actually being able to set up two
>     servers on the same port at the same time -- but connecting to one
>     will always lead to the IPv6 server (regardless of whether you use
>     "localhost" or "::1").  Therefore, even if you get two servers
>     running concurrently, one of the tests will still break because it
>     connects to the wrong one.
> 
> This series fixes these issues.
> 
> 
> Note that even if you do not care about concurrency, it still is a good
> idea to make 147 not use a fixed port to create NBD servers on, as it
> may always be already in use by a totally different application.
> 
> 
> Max Reitz (3):
>   iotests.py: Add qemu_nbd_pipe()
>   iotests: Bind qemu-nbd to localhost in 147
>   iotests: Allow 147 to be run concurrently
> 
>  tests/qemu-iotests/147        | 98 ++++++++++++++++++++++++-----------
>  tests/qemu-iotests/iotests.py | 14 +++++
>  2 files changed, 82 insertions(+), 30 deletions(-)

Applied to my block branch.

Max


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      parent reply	other threads:[~2019-01-31  1:01 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-12-21 23:47 [Qemu-devel] [PATCH 0/3] iotests: Allow 147 to be run concurrently Max Reitz
2018-12-21 23:47 ` [Qemu-devel] [PATCH 1/3] iotests.py: Add qemu_nbd_pipe() Max Reitz
2019-01-21 20:55   ` Eric Blake
2019-01-23 13:06     ` Max Reitz
2019-01-23 14:27       ` Eric Blake
2018-12-21 23:47 ` [Qemu-devel] [PATCH 2/3] iotests: Bind qemu-nbd to localhost in 147 Max Reitz
2019-01-21 20:56   ` Eric Blake
2018-12-21 23:47 ` [Qemu-devel] [PATCH 3/3] iotests: Allow 147 to be run concurrently Max Reitz
2019-01-21 20:50   ` [Qemu-devel] [Qemu-block] " John Snow
2019-01-23 13:05     ` Max Reitz
2019-01-23 17:34       ` Max Reitz
2019-01-23 17:47         ` John Snow
2019-01-25 15:01           ` Max Reitz
2019-01-21 21:02   ` [Qemu-devel] " Eric Blake
2019-01-23 13:12     ` Max Reitz
2019-01-23 14:33       ` Eric Blake
2019-01-23 14:37         ` Max Reitz
2019-01-23 14:43         ` Daniel P. Berrangé
2019-01-31  1:01 ` Max Reitz [this message]

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