1 files changed, 114 insertions, 0 deletions
diff --git a/tests/qemu-iotests/175 b/tests/qemu-iotests/175
new file mode 100755
index 000000000..f74f053b7
--- /dev/null
+++ b/tests/qemu-iotests/175
@@ -0,0 +1,114 @@
+#!/usr/bin/env bash
+# group: quick
+#
+# Test creating raw image preallocation mode
+#
+# Copyright (C) 2017 Nir Soffer <nirsof@gmail.com>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+# creator
+owner=nirsof@gmail.com
+
+seq=`basename $0`
+echo "QA output created by $seq"
+
+status=1	# failure is the default!
+
+_cleanup()
+{
+    _cleanup_test_img
+    rm -f "$TEST_DIR/empty"
+}
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+# Some file systems sometimes allocate extra blocks independently of
+# the file size.  This function hides the resulting difference in the
+# stat -c '%b' output.
+# Parameter 1: Number of blocks an empty file occupies
+# Parameter 2: Minimal number of blocks in an image
+# Parameter 3: Image size in bytes
+_filter_blocks()
+{
+    extra_blocks=$1
+    min_blocks=$2
+    img_size=$3
+
+    sed -e "s/blocks=$min_blocks\\(\$\\|[^0-9]\\)/min allocation/" \
+        -e "s/blocks=$((extra_blocks + img_size / 512))\\(\$\\|[^0-9]\\)/max allocation/"
+}
+
+# Resize image using block_resize.
+# Parameter 1: image path
+# Parameter 2: new size
+_block_resize()
+{
+    local path=$1
+    local size=$2
+
+    $QEMU -qmp stdio -nographic -nodefaults \
+        -blockdev file,node-name=file,filename=$path,cache.direct=on \
+        <<EOF
+{'execute': 'qmp_capabilities'}
+{'execute': 'block_resize', 'arguments': {'node-name': 'file', 'size': $size}}
+{'execute': 'quit'}
+EOF
+}
+
+# get standard environment, filters and checks
+. ./common.rc
+. ./common.filter
+
+_supported_fmt raw
+_supported_proto file fuse
+_supported_os Linux
+
+_default_cache_mode none
+_supported_cache_modes none directsync
+
+size=$((1 * 1024 * 1024))
+
+touch "$TEST_DIR/empty"
+extra_blocks=$(stat -c '%b' "$TEST_DIR/empty")
+
+# We always write the first byte; check how many blocks this filesystem
+# allocates to match empty image alloation.
+printf "\0" > "$TEST_DIR/empty"
+min_blocks=$(stat -c '%b' "$TEST_DIR/empty")
+
+echo
+echo "== creating image with default preallocation =="
+_make_test_img -o extent_size_hint=0 $size
+stat -c "size=%s, blocks=%b" $TEST_IMG | _filter_blocks $extra_blocks $min_blocks $size
+
+for mode in off full falloc; do
+    echo
+    echo "== creating image with preallocation $mode =="
+    _make_test_img -o preallocation=$mode,extent_size_hint=0 $size
+    stat -c "size=%s, blocks=%b" $TEST_IMG | _filter_blocks $extra_blocks $min_blocks $size
+done
+
+for new_size in 4096 1048576; do
+    echo
+    echo "== resize empty image with block_resize =="
+    _make_test_img -o extent_size_hint=0 0
+    _block_resize $TEST_IMG $new_size >/dev/null
+    stat -c "size=%s, blocks=%b" $TEST_IMG | _filter_blocks $extra_blocks $min_blocks $new_size
+done
+
+# success, all done
+echo "*** done"
+rm -f $seq.full
+status=0