From: Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
Date: Mon, 5 Feb 2018 23:19:00 +0000 (-0500)
Subject: Fix: add-context cannot be performed after a session has been started
X-Git-Tag: v2.11.0-rc1~389
X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=commitdiff_plain;h=9a699f7bb912d287630c8940459069a4b04d2399;hp=9a699f7bb912d287630c8940459069a4b04d2399

Fix: add-context cannot be performed after a session has been started

The following scenario lead to a corrupted trace/metadata layout problem:
  - lttng create test
  - lttng enable-channel -u test
  - lttng enable-event -u -a -c test
  - lttng start
  - ./instrumented-application
  - lttng stop
  - lttng add-context -u -t procname -c test
  - lttng start
  - ./instrumented-application
  - lttng stop
  - lttng view

Babeltrace 1.5.x will fail with:

[error] Unexpected end of packet. Either the trace data stream is corrupted or metadata description does not match data layout.
[error] Reading event failed.
Error printing trace.

Signed-off-by: Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
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