From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:56285) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fGThF-0007Zj-Rb for qemu-devel@nongnu.org; Wed, 09 May 2018 14:20:15 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fGThE-0003T0-1r for qemu-devel@nongnu.org; Wed, 09 May 2018 14:20:13 -0400 From: Max Reitz Date: Wed, 9 May 2018 20:20:02 +0200 Message-Id: <20180509182002.8044-3-mreitz@redhat.com> In-Reply-To: <20180509182002.8044-1-mreitz@redhat.com> References: <20180509182002.8044-1-mreitz@redhat.com> Subject: [Qemu-devel] [PATCH v2 2/2] iotests: Add test for rebasing with relative paths List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-block@nongnu.org Cc: qemu-devel@nongnu.org, Max Reitz , qemu-stable@nongnu.org, Eric Blake , Kevin Wolf Signed-off-by: Max Reitz Reviewed-by: Eric Blake --- tests/qemu-iotests/024 | 82 ++++++++++++++++++++++++++++++++++++++++++++-- tests/qemu-iotests/024.out | 30 +++++++++++++++++ 2 files changed, 109 insertions(+), 3 deletions(-) diff --git a/tests/qemu-iotests/024 b/tests/qemu-iotests/024 index e0d77ce2f5..4071ed6093 100755 --- a/tests/qemu-iotests/024 +++ b/tests/qemu-iotests/024 @@ -29,9 +29,14 @@ status=1 # failure is the default! _cleanup() { - _cleanup_test_img - rm -f "$TEST_DIR/t.$IMGFMT.base_old" - rm -f "$TEST_DIR/t.$IMGFMT.base_new" + _cleanup_test_img + rm -f "$TEST_DIR/t.$IMGFMT.base_old" + rm -f "$TEST_DIR/t.$IMGFMT.base_new" + + rm -f "$TEST_DIR/subdir/t.$IMGFMT" + rm -f "$TEST_DIR/subdir/t.$IMGFMT.base_old" + rm -f "$TEST_DIR/subdir/t.$IMGFMT.base_new" + rmdir "$TEST_DIR/subdir" 2> /dev/null } trap "_cleanup; exit \$status" 0 1 2 3 15 @@ -123,6 +128,77 @@ io_pattern readv $((13 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x00 io_pattern readv $((14 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x11 io_pattern readv $((15 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x00 +echo +echo "=== Test rebase in a subdirectory of the working directory ===" +echo + +# Clean up the old images beforehand so they do not interfere with +# this test +_cleanup + +mkdir "$TEST_DIR/subdir" + +# Relative to the overlay +BASE_OLD_OREL="t.$IMGFMT.base_old" +BASE_NEW_OREL="t.$IMGFMT.base_new" + +# Relative to $TEST_DIR (which is going to be our working directory) +OVERLAY_WREL="subdir/t.$IMGFMT" + +BASE_OLD="$TEST_DIR/subdir/$BASE_OLD_OREL" +BASE_NEW="$TEST_DIR/subdir/$BASE_NEW_OREL" +OVERLAY="$TEST_DIR/$OVERLAY_WREL" + +# Test done here: +# +# Backing (old): 11 11 -- 11 +# Backing (new): -- 22 22 11 +# Overlay: -- -- -- -- +# +# Rebasing works, we have verified that above. Here, we just want to +# see that rebasing is done for the correct target backing file. + +TEST_IMG=$BASE_OLD _make_test_img 1M +TEST_IMG=$BASE_NEW _make_test_img 1M +TEST_IMG=$OVERLAY _make_test_img -b "$BASE_OLD_OREL" 1M + +echo + +$QEMU_IO "$BASE_OLD" \ + -c "write -P 0x11 $((0 * CLUSTER_SIZE)) $((2 * CLUSTER_SIZE))" \ + -c "write -P 0x11 $((3 * CLUSTER_SIZE)) $((1 * CLUSTER_SIZE))" \ + | _filter_qemu_io + +$QEMU_IO "$BASE_NEW" \ + -c "write -P 0x22 $((1 * CLUSTER_SIZE)) $((2 * CLUSTER_SIZE))" \ + -c "write -P 0x11 $((3 * CLUSTER_SIZE)) $((1 * CLUSTER_SIZE))" \ + | _filter_qemu_io + +echo + +pushd "$TEST_DIR" >/dev/null +$QEMU_IMG rebase -f "$IMGFMT" -b "$BASE_NEW_OREL" "$OVERLAY_WREL" +popd >/dev/null + +# Verify the backing path is correct +TEST_IMG=$OVERLAY _img_info | grep '^backing file' + +echo + +# Verify the data is correct +$QEMU_IO "$OVERLAY" \ + -c "read -P 0x11 $((0 * CLUSTER_SIZE)) $CLUSTER_SIZE" \ + -c "read -P 0x11 $((1 * CLUSTER_SIZE)) $CLUSTER_SIZE" \ + -c "read -P 0x00 $((2 * CLUSTER_SIZE)) $CLUSTER_SIZE" \ + -c "read -P 0x11 $((3 * CLUSTER_SIZE)) $CLUSTER_SIZE" \ + | _filter_qemu_io + +echo + +# Verify that cluster #3 is not allocated (because it is the same in +# $BASE_OLD and $BASE_NEW) +$QEMU_IMG map "$OVERLAY" | _filter_qemu_img_map + # success, all done echo "*** done" diff --git a/tests/qemu-iotests/024.out b/tests/qemu-iotests/024.out index 33cfaf5cfc..024dc786b3 100644 --- a/tests/qemu-iotests/024.out +++ b/tests/qemu-iotests/024.out @@ -141,4 +141,34 @@ read 65536/65536 bytes at offset 917504 === IO: pattern 0x00 read 65536/65536 bytes at offset 983040 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + +=== Test rebase in a subdirectory of the working directory === + +Formatting 'TEST_DIR/subdir/t.IMGFMT.base_old', fmt=IMGFMT size=1048576 +Formatting 'TEST_DIR/subdir/t.IMGFMT.base_new', fmt=IMGFMT size=1048576 +Formatting 'TEST_DIR/subdir/t.IMGFMT', fmt=IMGFMT size=1048576 backing_file=t.IMGFMT.base_old + +wrote 131072/131072 bytes at offset 0 +128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +wrote 65536/65536 bytes at offset 196608 +64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +wrote 131072/131072 bytes at offset 65536 +128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +wrote 65536/65536 bytes at offset 196608 +64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + +backing file: t.IMGFMT.base_new (actual path: TEST_DIR/subdir/t.IMGFMT.base_new) + +read 65536/65536 bytes at offset 0 +64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 65536/65536 bytes at offset 65536 +64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 65536/65536 bytes at offset 131072 +64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 65536/65536 bytes at offset 196608 +64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + +Offset Length File +0 0x30000 TEST_DIR/subdir/t.IMGFMT +0x30000 0x10000 TEST_DIR/subdir/t.IMGFMT.base_new *** done -- 2.14.3