[Qemu-devel] [PATCH v12 1/6] block: round up file size to nearest sector

[Hu Tao]

Reviewed-by: Max Reitz <address@hidden>
Reviewed-by: Eric Blake <address@hidden>
Signed-off-by: Hu Tao <address@hidden>
---
 block/qcow2.c              |  3 ++-
 block/raw-posix.c          |  4 +--
 block/raw-win32.c          |  4 +--
 tests/qemu-iotests/096     | 64 ++++++++++++++++++++++++++++++++++++++++++++++
 tests/qemu-iotests/096.out | 14 ++++++++++
 tests/qemu-iotests/group   |  1 +
 6 files changed, 85 insertions(+), 5 deletions(-)
 create mode 100755 tests/qemu-iotests/096
 create mode 100644 tests/qemu-iotests/096.out

diff --git a/block/qcow2.c b/block/qcow2.c
index 0aba8dd..0dfbb9a 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -1777,7 +1777,8 @@ static int qcow2_create(const char *filename, QemuOpts 
*opts, Error **errp)
     int ret;
 
     /* Read out options */
-    sectors = qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0) / 512;
+    sectors = DIV_ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0),
+                           BDRV_SECTOR_SIZE);
     backing_file = qemu_opt_get_del(opts, BLOCK_OPT_BACKING_FILE);
     backing_fmt = qemu_opt_get_del(opts, BLOCK_OPT_BACKING_FMT);
     if (qemu_opt_get_bool_del(opts, BLOCK_OPT_ENCRYPT, false)) {
diff --git a/block/raw-posix.c b/block/raw-posix.c
index a857def..822522c 100644
--- a/block/raw-posix.c
+++ b/block/raw-posix.c
@@ -1332,8 +1332,8 @@ static int raw_create(const char *filename, QemuOpts 
*opts, Error **errp)
     strstart(filename, "file:", &filename);
 
     /* Read out options */
-    total_size =
-        qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0) / BDRV_SECTOR_SIZE;
+    total_size = DIV_ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0),
+                              BDRV_SECTOR_SIZE);
     nocow = qemu_opt_get_bool(opts, BLOCK_OPT_NOCOW, false);
 
     fd = qemu_open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY,
diff --git a/block/raw-win32.c b/block/raw-win32.c
index 902eab6..1e1880d 100644
--- a/block/raw-win32.c
+++ b/block/raw-win32.c
@@ -511,8 +511,8 @@ static int raw_create(const char *filename, QemuOpts *opts, 
Error **errp)
     strstart(filename, "file:", &filename);
 
     /* Read out options */
-    total_size =
-        qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0) / 512;
+    total_size = DIV_ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0),
+                              BDRV_SECTOR_SIZE);
 
     fd = qemu_open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY,
                    0644);
diff --git a/tests/qemu-iotests/096 b/tests/qemu-iotests/096
new file mode 100755
index 0000000..1c2f6a3
--- /dev/null
+++ b/tests/qemu-iotests/096
@@ -0,0 +1,64 @@
+#!/bin/bash
+#
+# Test qcow2 creation with aligned and unaligned sizes
+#
+# Copyright (C) 2014 Fujitsu.
+#
+# 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
address@hidden
+
+seq=`basename $0`
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1       # failure is the default!
+
+_cleanup()
+{
+       _cleanup_test_img
+}
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+# get standard environment, filters and checks
+. ./common.rc
+. ./common.filter
+
+_supported_fmt qcow2
+_supported_proto file
+_supported_os Linux
+
+function test_qemu_img()
+{
+    echo qemu-img "$@" | _filter_testdir
+    $QEMU_IMG "$@" 2>&1 | _filter_testdir
+    echo
+}
+
+echo "=== Check qemu-img info output ==="
+echo
+image_sizes="1024 1234"
+
+for s in $image_sizes; do
+    _make_test_img $s
+    _img_info
+done
+
+# success, all done
+echo "*** done"
+rm -f $seq.full
+status=0
diff --git a/tests/qemu-iotests/096.out b/tests/qemu-iotests/096.out
new file mode 100644
index 0000000..5f6c262
--- /dev/null
+++ b/tests/qemu-iotests/096.out
@@ -0,0 +1,14 @@
+QA output created by 096
+=== Check qemu-img info output ===
+
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1024 
+image: TEST_DIR/t.IMGFMT
+file format: IMGFMT
+virtual size: 1.0K (1024 bytes)
+cluster_size: 65536
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1234 
+image: TEST_DIR/t.IMGFMT
+file format: IMGFMT
+virtual size: 1.5K (1536 bytes)
+cluster_size: 65536
+***done
diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group
index 6e67f61..714158f 100644
--- a/tests/qemu-iotests/group
+++ b/tests/qemu-iotests/group
@@ -100,3 +100,4 @@
 091 rw auto quick
 092 rw auto quick
 095 rw auto quick
+096 rw auto
-- 
1.9.3