path: root/tests/bugs/write-behind/issue-884.t
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Diffstat (limited to 'tests/bugs/write-behind/issue-884.t')
1 files changed, 40 insertions, 0 deletions
diff --git a/tests/bugs/write-behind/issue-884.t b/tests/bugs/write-behind/issue-884.t
new file mode 100755
index 00000000000..2bcf7d15265
--- /dev/null
+++ b/tests/bugs/write-behind/issue-884.t
@@ -0,0 +1,40 @@
+. $(dirname $0)/../../include.rc
+. $(dirname $0)/../../volume.rc
+# This test tries to detect a race condition in write-behind. It's based on a
+# reproducer written by Stefan Ring that is able to hit it sometimes. On my
+# system, it happened around 10% of the runs. This means that if this bug
+# appears again, this test will fail once every 10 runs. Most probably this
+# failure will be hidden by the automatic test retry of the testing framework.
+# Please, if this test fails, it needs to be analyzed in detail.
+function run() {
+ "${@}" >/dev/null
+TEST glusterd
+TEST pidof glusterd
+TEST $CLI volume create $V0 $H0:$B0/$V0
+# This makes it easier to hit the issue
+TEST $CLI volume set $V0 client-log-level TRACE
+TEST $CLI volume start $V0
+TEST $GFS --volfile-server=$H0 --volfile-id=$V0 $M0
+build_tester $(dirname $0)/issue-884.c -lgfapi
+TEST touch $M0/testfile
+# This program generates a file of 535694336 bytes with a fixed pattern
+TEST run $(dirname $0)/issue-884 $V0 testfile
+# This is the md5sum of the expected pattern without corruption
+EXPECT "ad105f9349345a70fc697632cbb5eec8" echo "$(md5sum $B0/$V0/testfile | awk '{ print $1; }')"