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[Qemu-devel] [PULL 28/33] qemu-iotests: Preallocation with external data
From: |
Kevin Wolf |
Subject: |
[Qemu-devel] [PULL 28/33] qemu-iotests: Preallocation with external data file |
Date: |
Fri, 8 Mar 2019 13:58:18 +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 6a19919add..5838c6e89c 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-devel] [PULL 18/33] qcow2: Don't assume 0 is an invalid cluster offset, (continued)
- [Qemu-devel] [PULL 18/33] qcow2: Don't assume 0 is an invalid cluster offset, Kevin Wolf, 2019/03/08
- [Qemu-devel] [PULL 20/33] qcow2: Prepare qcow2_co_block_status() for data file, Kevin Wolf, 2019/03/08
- [Qemu-devel] [PULL 15/33] qcow2: Pass bs to qcow2_get_cluster_type(), Kevin Wolf, 2019/03/08
- [Qemu-devel] [PULL 23/33] qcow2: Support external data file in qemu-img check, Kevin Wolf, 2019/03/08
- [Qemu-devel] [PULL 22/33] qcow2: Return error for snapshot operation with data file, Kevin Wolf, 2019/03/08
- [Qemu-devel] [PULL 19/33] qcow2: Return 0/-errno in qcow2_alloc_compressed_cluster_offset(), Kevin Wolf, 2019/03/08
- [Qemu-devel] [PULL 09/33] qemu-iotests: Improve portability by searching bash in the $PATH, Kevin Wolf, 2019/03/08
- [Qemu-devel] [PULL 24/33] qcow2: Add basic data-file infrastructure, Kevin Wolf, 2019/03/08
- [Qemu-devel] [PULL 16/33] qcow2: Prepare qcow2_get_cluster_type() for external data file, Kevin Wolf, 2019/03/08
- [Qemu-devel] [PULL 21/33] qcow2: External file I/O, Kevin Wolf, 2019/03/08
- [Qemu-devel] [PULL 28/33] qemu-iotests: Preallocation with external data file,
Kevin Wolf <=
- [Qemu-devel] [PULL 25/33] qcow2: Creating images with external data file, Kevin Wolf, 2019/03/08
- [Qemu-devel] [PULL 26/33] qcow2: Store data file name in the image, Kevin Wolf, 2019/03/08
- [Qemu-devel] [PULL 32/33] qemu-iotests: Add dependency to qemu-nbd tool, Kevin Wolf, 2019/03/08
- [Qemu-devel] [PULL 30/33] qemu-iotests: amend with external data file, Kevin Wolf, 2019/03/08
- [Qemu-devel] [PULL 33/33] qcow2 spec: Describe string header extensions, Kevin Wolf, 2019/03/08
- [Qemu-devel] [PULL 31/33] ahci-test: Add dependency to qemu-img tool, Kevin Wolf, 2019/03/08
- [Qemu-devel] [PULL 27/33] qcow2: Implement data-file-raw create option, Kevin Wolf, 2019/03/08
- [Qemu-devel] [PULL 29/33] qemu-iotests: General tests for qcow2 with external data file, Kevin Wolf, 2019/03/08
- Re: [Qemu-devel] [PULL 00/33] Block layer patches, Peter Maydell, 2019/03/09