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-rwxr-xr-xqa/workunits/rbd/map-snapshot-io.sh17
1 files changed, 17 insertions, 0 deletions
diff --git a/qa/workunits/rbd/map-snapshot-io.sh b/qa/workunits/rbd/map-snapshot-io.sh
new file mode 100755
index 000000000..a69d84829
--- /dev/null
+++ b/qa/workunits/rbd/map-snapshot-io.sh
@@ -0,0 +1,17 @@
+#!/bin/sh
+
+# http://tracker.ceph.com/issues/3964
+
+set -ex
+
+rbd create image -s 100
+DEV=$(sudo rbd map image)
+dd if=/dev/zero of=$DEV oflag=direct count=10
+rbd snap create image@s1
+dd if=/dev/zero of=$DEV oflag=direct count=10 # used to fail
+rbd snap rm image@s1
+dd if=/dev/zero of=$DEV oflag=direct count=10
+sudo rbd unmap $DEV
+rbd rm image
+
+echo OK