diff options
| author | Fam Zheng <famz@redhat.com> | 2017-11-13 23:00:26 +0800 |
|---|---|---|
| committer | Max Reitz <mreitz@redhat.com> | 2017-11-14 18:06:25 +0100 |
| commit | d04c1555031196a51ea79a29b97a61450c02a1fb (patch) | |
| tree | ff98886e0e9035a47d9b04cac4aa3f782bd47236 /tests/qemu-iotests | |
| parent | 04dec3c3ae5c4a4f1fcb684fa264ba166bdb6610 (diff) | |
iotests: 077: Filter out 'resume' lines
In the "Overlapping multiple requests" cases, the 3rd reqs (the break
point B) doesn't wait for the 2nd, and once resumed the I/O will just
continue. This is because the 2nd is already waiting for the 1st, and
in wait_serialising_requests() there is:
/* If the request is already (indirectly) waiting for us, or
* will wait for us as soon as it wakes up, then just go on
* (instead of producing a deadlock in the former case). */
if (!req->waiting_for) {
/* actually break */
...
}
Consequently, the following "sleep 100; resume A" command races with the
completion of that request, and sometimes results in an unexpected
order of output:
> @@ -56,9 +56,9 @@
> wrote XXX/XXX bytes at offset XXX
> XXX bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
> blkdebug: Resuming request 'B'
> +blkdebug: Resuming request 'A'
> wrote XXX/XXX bytes at offset XXX
> XXX bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
> -blkdebug: Resuming request 'A'
> wrote XXX/XXX bytes at offset XXX
> XXX bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
> wrote XXX/XXX bytes at offset XXX
Filter out the "Resuming request" lines to make the output
deterministic.
Reported-by: Patchew <no-reply@patchew.org>
Signed-off-by: Fam Zheng <famz@redhat.com>
Message-id: 20171113150026.4743-1-famz@redhat.com
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Diffstat (limited to 'tests/qemu-iotests')
| -rwxr-xr-x | tests/qemu-iotests/077 | 3 | ||||
| -rw-r--r-- | tests/qemu-iotests/077.out | 16 |
2 files changed, 2 insertions, 17 deletions
diff --git a/tests/qemu-iotests/077 b/tests/qemu-iotests/077 index d2d2a2d687..b3c6fb1370 100755 --- a/tests/qemu-iotests/077 +++ b/tests/qemu-iotests/077 @@ -188,7 +188,8 @@ EOF test_io | $QEMU_IO | _filter_qemu_io | \ sed -e 's,[0-9/]* bytes at offset [0-9]*,XXX/XXX bytes at offset XXX,g' \ -e 's/^[0-9]* \(bytes\|KiB\)/XXX bytes/' \ - -e '/Suspended/d' + -e '/Suspended/d' \ + -e '/blkdebug: Resuming request/d' echo echo "== Verify image content ==" diff --git a/tests/qemu-iotests/077.out b/tests/qemu-iotests/077.out index 16f951fd3d..4aae82f2e2 100644 --- a/tests/qemu-iotests/077.out +++ b/tests/qemu-iotests/077.out @@ -4,17 +4,14 @@ Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 == Some concurrent requests involving RMW == wrote XXX/XXX bytes at offset XXX XXX bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -blkdebug: Resuming request 'A' wrote XXX/XXX bytes at offset XXX XXX bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote XXX/XXX bytes at offset XXX XXX bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -blkdebug: Resuming request 'A' wrote XXX/XXX bytes at offset XXX XXX bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote XXX/XXX bytes at offset XXX XXX bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -blkdebug: Resuming request 'A' wrote XXX/XXX bytes at offset XXX XXX bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote XXX/XXX bytes at offset XXX @@ -31,51 +28,38 @@ wrote XXX/XXX bytes at offset XXX XXX bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote XXX/XXX bytes at offset XXX XXX bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -blkdebug: Resuming request 'A' wrote XXX/XXX bytes at offset XXX XXX bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -blkdebug: Resuming request 'B' wrote XXX/XXX bytes at offset XXX XXX bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote XXX/XXX bytes at offset XXX XXX bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -blkdebug: Resuming request 'B' wrote XXX/XXX bytes at offset XXX XXX bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -blkdebug: Resuming request 'A' wrote XXX/XXX bytes at offset XXX XXX bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote XXX/XXX bytes at offset XXX XXX bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -blkdebug: Resuming request 'A' wrote XXX/XXX bytes at offset XXX XXX bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -blkdebug: Resuming request 'B' wrote XXX/XXX bytes at offset XXX XXX bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote XXX/XXX bytes at offset XXX XXX bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -blkdebug: Resuming request 'B' wrote XXX/XXX bytes at offset XXX XXX bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -blkdebug: Resuming request 'A' wrote XXX/XXX bytes at offset XXX XXX bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote XXX/XXX bytes at offset XXX XXX bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -blkdebug: Resuming request 'A' wrote XXX/XXX bytes at offset XXX XXX bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote XXX/XXX bytes at offset XXX XXX bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -blkdebug: Resuming request 'A' -blkdebug: Resuming request 'C' wrote XXX/XXX bytes at offset XXX XXX bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -blkdebug: Resuming request 'B' wrote XXX/XXX bytes at offset XXX XXX bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -blkdebug: Resuming request 'A' wrote XXX/XXX bytes at offset XXX XXX bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote XXX/XXX bytes at offset XXX |