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jforbes pushed a commit to branch master
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commit ff0349bdde4b0ce2ca09d77c14b39456fd7b2cf7
Author: Josh Boyer <jwboyer@xxxxxxxxxx>
Date: Wed May 29 14:56:15 2013 -0400
Add direct IO stress tests
This creates a temporary ext4 image to use for the direct IO stress tests.
The testcases in LTP blindly assume /tmp is a real filesystem and not tmpfs,
which doesn't support direct IO. So, we use this loopback filesystem and
it exercises both the loopback and ext4 code paths. Eventually we can add
other filesystems or something
---
stress/ltp/diostress.sh | 71 +++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 71 insertions(+)
diff --git a/stress/ltp/diostress.sh b/stress/ltp/diostress.sh
new file mode 100755
index 0000000..0bbde18
--- /dev/null
+++ b/stress/ltp/diostress.sh
@@ -0,0 +1,71 @@
+#!/bin/bash
+
+source ../../utils/loopback.sh
+
+pushd ltp
+export PATH=$PATH:`pwd`/testcases/kernel/io/direct_io/
+
+# Setup a filesystem we know will support dio, since LTP sucks and assumes /tmp
+# is a real filesystem
+img_file=`mktemp`
+
+# It also sucks in that you can't tell it via options to NOT use /tmp for its
+# files. So we have to temporarily mount our fake image over top. Irritation.
+#mount_dir=`mktemp -d`
+mount_dir="/tmp"
+loopback_fs $img_file 1024 ext4 $mount_dir
+if [ $? -ne 0 ]
+then
+ echo "Could not create loopback filesystem"
+ exit 3
+fi
+
+pushd $mount_dir
+
+## Complete a default run.
+diotest1
+diotest2
+diotest3
+diotest4
+diotest5
+diotest6
+
+## Run the tests with larger buffersize
+diotest1 -b 65536
+diotest2 -b 65536
+diotest3 -b 65536
+diotest4 -b 65536
+diotest5 -b 65536
+diotest6 -b 65536
+
+### Run the tests with larger iterations
+diotest1 -b 65536 -n 2000
+diotest2 -b 65536 -i 1000
+diotest3 -b 65536 -i 1000
+diotest5 -b 65536 -i 1000
+diotest6 -b 65536 -i 1000
+
+## Run the tests with larger offset - 1MB
+diotest2 -b 65536 -i 1000 -o 1024000
+diotest3 -b 65536 -i 1000 -o 1024000
+diotest5 -b 65536 -i 1000 -o 1024000
+diotest6 -b 65536 -i 1000 -o 1024000
+
+## Run the tests with larger offset - 100 MB
+diotest2 -b 65536 -i 1000 -o 104857600
+diotest3 -b 65536 -i 1000 -o 104857600
+diotest5 -b 65536 -i 1000 -o 104857600
+diotest6 -b 65536 -i 1000 -o 104857600
+
+### Run tests with larger vector array
+diotest6 -b 8192 -v 100
+diotest6 -b 8192 -o 1024000 -i 1000 -v 100
+diotest6 -b 8192 -o 1024000 -i 1000 -v 200
+popd
+
+# Cleanup
+umount $mount_dir
+rm $img_file
+
+popd
+
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