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[Qemu-block] [PATCH 18/20] qemu-iotests: Preallocation with external dat
From: |
Kevin Wolf |
Subject: |
[Qemu-block] [PATCH 18/20] qemu-iotests: Preallocation with external data file |
Date: |
Wed, 27 Feb 2019 18:22:54 +0100 |
Test that preallocating metadata results in a somewhat larger qcow2
file, but preallocating data only affects the disk usage of the data
file and the qcow2 file stays small.
Signed-off-by: Kevin Wolf <address@hidden>
---
tests/qemu-iotests/243 | 22 ++++++++++++++++++++++
tests/qemu-iotests/243.out | 32 ++++++++++++++++++++++++++++++++
2 files changed, 54 insertions(+)
diff --git a/tests/qemu-iotests/243 b/tests/qemu-iotests/243
index 5ab1b7863d..0e807dabf6 100755
--- a/tests/qemu-iotests/243
+++ b/tests/qemu-iotests/243
@@ -29,6 +29,7 @@ status=1 # failure is the default!
_cleanup()
{
_cleanup_test_img
+ rm -f $TEST_IMG.data
}
trap "_cleanup; exit \$status" 0 1 2 3 15
@@ -57,6 +58,27 @@ for mode in off metadata falloc full; do
done
+for mode in off metadata falloc full; do
+
+ echo
+ echo "=== External data file: preallocation=$mode ==="
+ echo
+
+ IMGOPTS="data_file=$TEST_IMG.data,preallocation=$mode" _make_test_img 64M
+
+ echo -n "qcow2 file size: "
+ du -b $TEST_IMG | cut -f1
+ echo -n "data file size: "
+ du -b $TEST_IMG.data | cut -f1
+
+ # Can't use precise numbers here because they differ between filesystems
+ echo -n "qcow2 disk usage: "
+ [ $(du -B1 $TEST_IMG | cut -f1) -lt 1048576 ] && echo "low" || echo "high"
+ echo -n "data disk usage: "
+ [ $(du -B1 $TEST_IMG.data | cut -f1) -lt 1048576 ] && echo "low" || echo
"high"
+
+done
+
# success, all done
echo "*** done"
rm -f $seq.full
diff --git a/tests/qemu-iotests/243.out b/tests/qemu-iotests/243.out
index e531753ad1..dcb33fac32 100644
--- a/tests/qemu-iotests/243.out
+++ b/tests/qemu-iotests/243.out
@@ -23,4 +23,36 @@ Disk usage: high
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 preallocation=full
File size: 67436544
Disk usage: high
+
+=== External data file: preallocation=off ===
+
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864
data_file=TEST_DIR/t.IMGFMT.data preallocation=off
+qcow2 file size: 196616
+data file size: 67108864
+qcow2 disk usage: low
+data disk usage: low
+
+=== External data file: preallocation=metadata ===
+
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864
data_file=TEST_DIR/t.IMGFMT.data preallocation=metadata
+qcow2 file size: 327680
+data file size: 67108864
+qcow2 disk usage: low
+data disk usage: low
+
+=== External data file: preallocation=falloc ===
+
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864
data_file=TEST_DIR/t.IMGFMT.data preallocation=falloc
+qcow2 file size: 327680
+data file size: 67108864
+qcow2 disk usage: low
+data disk usage: high
+
+=== External data file: preallocation=full ===
+
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864
data_file=TEST_DIR/t.IMGFMT.data preallocation=full
+qcow2 file size: 327680
+data file size: 67108864
+qcow2 disk usage: low
+data disk usage: high
*** done
--
2.20.1
- [Qemu-block] [PATCH 00/20] qcow2: External data files, Kevin Wolf, 2019/02/27
- [Qemu-block] [PATCH 01/20] qemu-iotests: Test qcow2 preallocation modes, Kevin Wolf, 2019/02/27
- [Qemu-block] [PATCH 05/20] qcow2: Pass bs to qcow2_get_cluster_type(), Kevin Wolf, 2019/02/27
- [Qemu-block] [PATCH 03/20] qcow2: Extend spec for external data files, Kevin Wolf, 2019/02/27
- [Qemu-block] [PATCH 06/20] qcow2: Prepare qcow2_get_cluster_type() for external data file, Kevin Wolf, 2019/02/27
- [Qemu-block] [PATCH 13/20] qcow2: Support external data file in qemu-img check, Kevin Wolf, 2019/02/27
- [Qemu-block] [PATCH 14/20] qcow2: Add basic data-file infrastructure, Kevin Wolf, 2019/02/27
- [Qemu-block] [PATCH 02/20] qcow2: Simplify preallocation code, Kevin Wolf, 2019/02/27
- [Qemu-block] [PATCH 09/20] qcow2: Return 0/-errno in qcow2_alloc_compressed_cluster_offset(), Kevin Wolf, 2019/02/27
- [Qemu-block] [PATCH 18/20] qemu-iotests: Preallocation with external data file,
Kevin Wolf <=
- [Qemu-block] [PATCH 07/20] qcow2: Prepare count_contiguous_clusters() for external data file, Kevin Wolf, 2019/02/27
- [Qemu-block] [PATCH 10/20] qcow2: Prepare qcow2_co_block_status() for data file, Kevin Wolf, 2019/02/27
- [Qemu-block] [PATCH 08/20] qcow2: Don't assume 0 is an invalid cluster offset, Kevin Wolf, 2019/02/27
- [Qemu-block] [PATCH 20/20] qemu-iotests: amend with external data file, Kevin Wolf, 2019/02/27
- [Qemu-block] [PATCH 04/20] qcow2: Basic definitions for external data files, Kevin Wolf, 2019/02/27
- [Qemu-block] [PATCH 12/20] qcow2: Return error for snapshot operation with data file, Kevin Wolf, 2019/02/27
- [Qemu-block] [PATCH 15/20] qcow2: Creating images with external data file, Kevin Wolf, 2019/02/27
- [Qemu-block] [PATCH 16/20] qcow2: Store data file name in the image, Kevin Wolf, 2019/02/27
- [Qemu-block] [PATCH 11/20] qcow2: External file I/O, Kevin Wolf, 2019/02/27
- [Qemu-block] [PATCH 17/20] qcow2: Implement data-file-raw create option, Kevin Wolf, 2019/02/27