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| author | Cleber Rosa | 2017-08-01 23:31:27 +0200 |
|---|---|---|
| committer | Kevin Wolf | 2017-08-08 14:36:59 +0200 |
| commit | 53dd4015acb48bad5aee5ba707848370dc442077 (patch) | |
| tree | b43684c4705a5bc6e32014349f4005cb724911bd /block | |
| parent | Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging (diff) | |
| download | qemu-53dd4015acb48bad5aee5ba707848370dc442077.tar.gz qemu-53dd4015acb48bad5aee5ba707848370dc442077.tar.xz qemu-53dd4015acb48bad5aee5ba707848370dc442077.zip | |
qemu-iotests/109: Fix lock race condition
A race condition is currently present between the clean up attempt of
the QEMU process and the execution of qemu-img. The actual (bad)
output is:
-Warning: Image size mismatch!
-Images are identical.
+qemu-img: Could not open '<build_dir>/tests/qemu-iotests/scratch/t.raw': Failed to get "consistent read" lock
+Is another process using the image?
A KILL signal is sent to the QEMU process, but qemu-img may begin to
run before the QEMU process is really gone. qemu-img will then
attempt to open the TEST_IMG file before it can secure a lock on it.
This attempts a more graceful shutdown, and waits for the QEMU process
to exit.
Signed-off-by: Cleber Rosa <crosa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'block')
0 files changed, 0 insertions, 0 deletions