iotests: Add test for rebasing with relative paths
Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 20180509182002.8044-3-mreitz@redhat.com Signed-off-by: Max Reitz <mreitz@redhat.com>
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Max Reitz
parent
d16699b646
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28036a7f70
@ -29,9 +29,14 @@ status=1 # failure is the default!
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_cleanup()
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{
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_cleanup_test_img
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rm -f "$TEST_DIR/t.$IMGFMT.base_old"
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rm -f "$TEST_DIR/t.$IMGFMT.base_new"
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_cleanup_test_img
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rm -f "$TEST_DIR/t.$IMGFMT.base_old"
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rm -f "$TEST_DIR/t.$IMGFMT.base_new"
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rm -f "$TEST_DIR/subdir/t.$IMGFMT"
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rm -f "$TEST_DIR/subdir/t.$IMGFMT.base_old"
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rm -f "$TEST_DIR/subdir/t.$IMGFMT.base_new"
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rmdir "$TEST_DIR/subdir" 2> /dev/null
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}
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trap "_cleanup; exit \$status" 0 1 2 3 15
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@ -123,6 +128,77 @@ io_pattern readv $((13 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x00
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io_pattern readv $((14 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x11
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io_pattern readv $((15 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x00
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echo
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echo "=== Test rebase in a subdirectory of the working directory ==="
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echo
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# Clean up the old images beforehand so they do not interfere with
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# this test
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_cleanup
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mkdir "$TEST_DIR/subdir"
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# Relative to the overlay
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BASE_OLD_OREL="t.$IMGFMT.base_old"
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BASE_NEW_OREL="t.$IMGFMT.base_new"
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# Relative to $TEST_DIR (which is going to be our working directory)
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OVERLAY_WREL="subdir/t.$IMGFMT"
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BASE_OLD="$TEST_DIR/subdir/$BASE_OLD_OREL"
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BASE_NEW="$TEST_DIR/subdir/$BASE_NEW_OREL"
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OVERLAY="$TEST_DIR/$OVERLAY_WREL"
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# Test done here:
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#
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# Backing (old): 11 11 -- 11
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# Backing (new): -- 22 22 11
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# Overlay: -- -- -- --
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#
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# Rebasing works, we have verified that above. Here, we just want to
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# see that rebasing is done for the correct target backing file.
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TEST_IMG=$BASE_OLD _make_test_img 1M
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TEST_IMG=$BASE_NEW _make_test_img 1M
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TEST_IMG=$OVERLAY _make_test_img -b "$BASE_OLD_OREL" 1M
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echo
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$QEMU_IO "$BASE_OLD" \
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-c "write -P 0x11 $((0 * CLUSTER_SIZE)) $((2 * CLUSTER_SIZE))" \
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-c "write -P 0x11 $((3 * CLUSTER_SIZE)) $((1 * CLUSTER_SIZE))" \
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| _filter_qemu_io
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$QEMU_IO "$BASE_NEW" \
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-c "write -P 0x22 $((1 * CLUSTER_SIZE)) $((2 * CLUSTER_SIZE))" \
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-c "write -P 0x11 $((3 * CLUSTER_SIZE)) $((1 * CLUSTER_SIZE))" \
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| _filter_qemu_io
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echo
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pushd "$TEST_DIR" >/dev/null
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$QEMU_IMG rebase -f "$IMGFMT" -b "$BASE_NEW_OREL" "$OVERLAY_WREL"
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popd >/dev/null
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# Verify the backing path is correct
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TEST_IMG=$OVERLAY _img_info | grep '^backing file'
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echo
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# Verify the data is correct
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$QEMU_IO "$OVERLAY" \
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-c "read -P 0x11 $((0 * CLUSTER_SIZE)) $CLUSTER_SIZE" \
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-c "read -P 0x11 $((1 * CLUSTER_SIZE)) $CLUSTER_SIZE" \
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-c "read -P 0x00 $((2 * CLUSTER_SIZE)) $CLUSTER_SIZE" \
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-c "read -P 0x11 $((3 * CLUSTER_SIZE)) $CLUSTER_SIZE" \
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| _filter_qemu_io
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echo
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# Verify that cluster #3 is not allocated (because it is the same in
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# $BASE_OLD and $BASE_NEW)
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$QEMU_IMG map "$OVERLAY" | _filter_qemu_img_map
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# success, all done
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echo "*** done"
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@ -141,4 +141,34 @@ read 65536/65536 bytes at offset 917504
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=== IO: pattern 0x00
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read 65536/65536 bytes at offset 983040
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64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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=== Test rebase in a subdirectory of the working directory ===
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Formatting 'TEST_DIR/subdir/t.IMGFMT.base_old', fmt=IMGFMT size=1048576
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Formatting 'TEST_DIR/subdir/t.IMGFMT.base_new', fmt=IMGFMT size=1048576
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Formatting 'TEST_DIR/subdir/t.IMGFMT', fmt=IMGFMT size=1048576 backing_file=t.IMGFMT.base_old
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wrote 131072/131072 bytes at offset 0
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128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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wrote 65536/65536 bytes at offset 196608
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64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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wrote 131072/131072 bytes at offset 65536
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128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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wrote 65536/65536 bytes at offset 196608
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64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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backing file: t.IMGFMT.base_new (actual path: TEST_DIR/subdir/t.IMGFMT.base_new)
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read 65536/65536 bytes at offset 0
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64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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read 65536/65536 bytes at offset 65536
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64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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read 65536/65536 bytes at offset 131072
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64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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read 65536/65536 bytes at offset 196608
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64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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Offset Length File
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0 0x30000 TEST_DIR/subdir/t.IMGFMT
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0x30000 0x10000 TEST_DIR/subdir/t.IMGFMT.base_new
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*** done
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