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[Qemu-block] [PATCH] iotests: 077: Filter out 'resume' lines
From: |
Fam Zheng |
Subject: |
[Qemu-block] [PATCH] iotests: 077: Filter out 'resume' lines |
Date: |
Mon, 13 Nov 2017 23:00:26 +0800 |
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 <address@hidden>
Signed-off-by: Fam Zheng <address@hidden>
---
tests/qemu-iotests/077 | 3 ++-
tests/qemu-iotests/077.out | 48 ++++++++++++++++------------------------------
2 files changed, 18 insertions(+), 33 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 +4,6 @@ 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 +20,46 @@ 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
+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)
+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)
+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)
+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)
wrote XXX/XXX bytes at offset XXX
--
2.13.6
- [Qemu-block] [PATCH] iotests: 077: Filter out 'resume' lines,
Fam Zheng <=