[Qemu-devel] [PATCH 03/26] FVD: add fully automated test-qcow2.sh

[Chunqiang Tang]

This patch is part of the Fast Virtual Disk (FVD) proposal.
See http://wiki.qemu.org/Features/FVD.

test-qcow2.sh drives 'qemu-io --auto' to perform fully automated testing for
QCOW2.

Signed-off-by: Chunqiang Tang <address@hidden>
---
 test-qcow2.sh |   89 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 89 insertions(+), 0 deletions(-)
 create mode 100755 test-qcow2.sh

diff --git a/test-qcow2.sh b/test-qcow2.sh
new file mode 100755
index 0000000..d1e4dc0
--- /dev/null
+++ b/test-qcow2.sh
@@ -0,0 +1,89 @@
+#!/bin/bash
+
+# Drive 'qemu-io --auto' to test the QCOW2 image format.
+#
+# Copyright IBM, Corp. 2010
+#
+# Authors:
+#     Chunqiang Tang <address@hidden>
+#
+# This work is licensed under the terms of the GNU GPL, version 2 or later.
+# See the COPYING.LIB file in the top-level directory.
+
+if [ $USER != "root" ]; then
+    echo "This command must be run by root in order to mount tmpfs."
+    exit 1
+fi
+
+QEMU_DIR=.
+QEMU_IMG=$QEMU_DIR/qemu-img
+QEMU_IO=$QEMU_DIR/qemu-io
+
+if [ ! -e $QEMU_IMG ]; then
+    echo "$QEMU_IMG does not exist."
+    exit 1;
+fi
+
+if [ ! -e $QEMU_IO ]; then
+    echo "$QEMU_IO does not exist."
+    exit 1;
+fi
+
+DATA_DIR=/var/ramdisk
+TRUTH_IMG=$DATA_DIR/truth.raw
+TEST_IMG=$DATA_DIR/test.qcow2
+TEST_BASE=$DATA_DIR/zero-500M.raw
+CMD_LOG=./test-qcow2.log
+
+parallel=100
+round=10000
+fail_prob=0.1
+cancel_prob=0
+instant_qemubh=true
+seed=$RANDOM$RANDOM
+count=0
+
+function invoke() {
+    echo "$*" >> $CMD_LOG
+    $*
+    ret=$?
+    if [ $ret -ne 0 ]; then
+        echo "Exit with error code $ret: $*"
+        exit $ret
+    fi
+}
+
+mount | grep $DATA_DIR > /dev/null
+if [ $? -ne 0 ]; then
+    echo "Create tmpfs at $DATA_DIR to store testing images."
+    if [ ! -e $DATA_DIR ]; then mkdir -p $DATA_DIR ; fi
+    invoke "mount -t tmpfs none $DATA_DIR -o size=4G"
+    if [ $? -ne 0 ]; then exit 1; fi
+fi
+
+/bin/rm -f $CMD_LOG $DATA_DIR/*
+touch $CMD_LOG
+
+while [ -t ]; do
+for cache in none writethrough writeback; do
+for cluster_size in 65536 ; do
+for io_size in 1048576 ; do
+    count=$[$count + 1]
+    echo "Round $count" >> $CMD_LOG
+
+    # QCOW2 image is about 1G
+    img_size=$[(1073741824 + ($RANDOM$RANDOM$RANDOM % 104857600)) / 512 * 512]
+
+    # base image is about 500MB
+    base_size=$[(536870912 + ($RANDOM$RANDOM$RANDOM % 104857600)) / 512 * 512]
+
+    invoke "/bin/rm -rf $TRUTH_IMG $TEST_IMG $TEST_BASE"
+    invoke "$QEMU_IO --auto --create=$TEST_BASE --seed=$seed 
--block_size=1048576 --empty_block_prob=0 --empty_block_chain=1 
--file_size=$base_size"
+    invoke "cp --sparse=always $TEST_BASE $TRUTH_IMG"
+    invoke "dd if=/dev/zero of=$TRUTH_IMG count=0 bs=1 seek=$img_size"
+    invoke "$QEMU_IMG create -f qcow2 
-ocluster_size=$cluster_size,backing_fmt=blksim -b $TEST_BASE $TEST_IMG 
$img_size"
+
+    invoke "$QEMU_IO --auto --cache=$cache --seed=$seed --truth=$TRUTH_IMG 
--format=qcow2 --test="blksim:$TEST_IMG" --verify_write=true 
--compare_before=false --compare_after=true --round=$round --parallel=$parallel 
--io_size=$io_size --fail_prob=$fail_prob --cancel_prob=$cancel_prob 
--instant_qemubh=$instant_qemubh"
+
+    seed=$[$seed + 1]
+done; done; done; done
-- 
1.7.0.4