QA output created by 154 == backing file contains zeros == Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=134217728 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file=TEST_DIR/t.IMGFMT.base wrote 2048/2048 bytes at offset 0 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote 2048/2048 bytes at offset 10240 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote 2048/2048 bytes at offset 17408 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote 2048/2048 bytes at offset 27648 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) [{ "start": 0, "length": 4096, "depth": 0, "zero": true, "data": false}, { "start": 4096, "length": 4096, "depth": 1, "zero": true, "data": false}, { "start": 8192, "length": 4096, "depth": 0, "zero": true, "data": false}, { "start": 12288, "length": 4096, "depth": 1, "zero": true, "data": false}, { "start": 16384, "length": 4096, "depth": 0, "zero": true, "data": false}, { "start": 20480, "length": 4096, "depth": 1, "zero": true, "data": false}, { "start": 24576, "length": 8192, "depth": 0, "zero": true, "data": false}, { "start": 32768, "length": 134184960, "depth": 1, "zero": true, "data": false}] == backing file contains non-zero data before write_zeroes == Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=134217728 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file=TEST_DIR/t.IMGFMT.base wrote 1024/1024 bytes at offset 32768 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote 1024/1024 bytes at offset 34816 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 1024/1024 bytes at offset 32768 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 3072/3072 bytes at offset 33792 3 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote 1024/1024 bytes at offset 66560 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote 1024/1024 bytes at offset 67584 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 1024/1024 bytes at offset 66560 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 1024/1024 bytes at offset 65536 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 2048/2048 bytes at offset 67584 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) [{ "start": 0, "length": 32768, "depth": 1, "zero": true, "data": false}, { "start": 32768, "length": 4096, "depth": 0, "zero": false, "data": true, "offset": 20480}, { "start": 36864, "length": 28672, "depth": 1, "zero": true, "data": false}, { "start": 65536, "length": 4096, "depth": 0, "zero": false, "data": true, "offset": 24576}, { "start": 69632, "length": 134148096, "depth": 1, "zero": true, "data": false}] == backing file contains non-zero data after write_zeroes == Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=134217728 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file=TEST_DIR/t.IMGFMT.base wrote 1024/1024 bytes at offset 34816 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote 1024/1024 bytes at offset 33792 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 2048/2048 bytes at offset 32768 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 1024/1024 bytes at offset 34816 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 1024/1024 bytes at offset 35840 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote 1024/1024 bytes at offset 44032 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote 1024/1024 bytes at offset 41984 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 1024/1024 bytes at offset 44032 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 3072/3072 bytes at offset 40960 3 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) [{ "start": 0, "length": 32768, "depth": 1, "zero": true, "data": false}, { "start": 32768, "length": 4096, "depth": 0, "zero": false, "data": true, "offset": 20480}, { "start": 36864, "length": 4096, "depth": 1, "zero": true, "data": false}, { "start": 40960, "length": 4096, "depth": 0, "zero": false, "data": true, "offset": 24576}, { "start": 45056, "length": 134172672, "depth": 1, "zero": true, "data": false}] == spanning two clusters, non-zero before request == Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=134217728 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file=TEST_DIR/t.IMGFMT.base wrote 1024/1024 bytes at offset 32768 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote 2048/2048 bytes at offset 35840 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 1024/1024 bytes at offset 32768 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 7168/7168 bytes at offset 33792 7 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote 1024/1024 bytes at offset 50176 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote 2048/2048 bytes at offset 52224 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 1024/1024 bytes at offset 49152 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 1024/1024 bytes at offset 50176 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 6144/6144 bytes at offset 51200 6 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote 1024/1024 bytes at offset 67584 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote 2048/2048 bytes at offset 68608 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 2048/2048 bytes at offset 65536 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 1024/1024 bytes at offset 67584 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 5120/5120 bytes at offset 68608 5 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) [{ "start": 0, "length": 32768, "depth": 1, "zero": true, "data": false}, { "start": 32768, "length": 8192, "depth": 0, "zero": false, "data": true, "offset": 20480}, { "start": 40960, "length": 8192, "depth": 1, "zero": true, "data": false}, { "start": 49152, "length": 8192, "depth": 0, "zero": false, "data": true, "offset": 28672}, { "start": 57344, "length": 8192, "depth": 1, "zero": true, "data": false}, { "start": 65536, "length": 8192, "depth": 0, "zero": false, "data": true, "offset": 36864}, { "start": 73728, "length": 134144000, "depth": 1, "zero": true, "data": false}] == spanning two clusters, non-zero after request == Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=134217728 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file=TEST_DIR/t.IMGFMT.base wrote 1024/1024 bytes at offset 37888 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote 2048/2048 bytes at offset 35840 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 5120/5120 bytes at offset 32768 5 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 1024/1024 bytes at offset 37888 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 2048/2048 bytes at offset 38912 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote 1024/1024 bytes at offset 55296 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote 2048/2048 bytes at offset 52224 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 6144/6144 bytes at offset 49152 6 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 1024/1024 bytes at offset 55296 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 1024/1024 bytes at offset 56320 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote 1024/1024 bytes at offset 72704 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote 2048/2048 bytes at offset 68608 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 7168/7168 bytes at offset 65536 7 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 1024/1024 bytes at offset 72704 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) [{ "start": 0, "length": 32768, "depth": 1, "zero": true, "data": false}, { "start": 32768, "length": 8192, "depth": 0, "zero": false, "data": true, "offset": 20480}, { "start": 40960, "length": 8192, "depth": 1, "zero": true, "data": false}, { "start": 49152, "length": 8192, "depth": 0, "zero": false, "data": true, "offset": 28672}, { "start": 57344, "length": 8192, "depth": 1, "zero": true, "data": false}, { "start": 65536, "length": 8192, "depth": 0, "zero": false, "data": true, "offset": 36864}, { "start": 73728, "length": 134144000, "depth": 1, "zero": true, "data": false}] == spanning two clusters, partially overwriting backing file == Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=134217728 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file=TEST_DIR/t.IMGFMT.base wrote 4096/4096 bytes at offset 2048 4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote 2048/2048 bytes at offset 3072 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 2048/2048 bytes at offset 0 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 1024/1024 bytes at offset 2048 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 2048/2048 bytes at offset 3072 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 1024/1024 bytes at offset 5120 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 2048/2048 bytes at offset 6144 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) [{ "start": 0, "length": 8192, "depth": 0, "zero": false, "data": true, "offset": 20480}, { "start": 8192, "length": 134209536, "depth": 1, "zero": true, "data": false}] == spanning multiple clusters, non-zero in first cluster == Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=134217728 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file=TEST_DIR/t.IMGFMT.base wrote 2048/2048 bytes at offset 65536 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote 7168/7168 bytes at offset 67584 7 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 2048/2048 bytes at offset 65536 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 10240/10240 bytes at offset 67584 10 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) [{ "start": 0, "length": 65536, "depth": 1, "zero": true, "data": false}, { "start": 65536, "length": 4096, "depth": 0, "zero": false, "data": true, "offset": 20480}, { "start": 69632, "length": 8192, "depth": 0, "zero": true, "data": false}, { "start": 77824, "length": 134139904, "depth": 1, "zero": true, "data": false}] == spanning multiple clusters, non-zero in intermediate cluster == Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=134217728 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file=TEST_DIR/t.IMGFMT.base wrote 2048/2048 bytes at offset 70656 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote 7168/7168 bytes at offset 67584 7 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 12288/12288 bytes at offset 65536 12 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) [{ "start": 0, "length": 65536, "depth": 1, "zero": true, "data": false}, { "start": 65536, "length": 12288, "depth": 0, "zero": true, "data": false}, { "start": 77824, "length": 134139904, "depth": 1, "zero": true, "data": false}] == spanning multiple clusters, non-zero in final cluster == Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=134217728 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file=TEST_DIR/t.IMGFMT.base wrote 2048/2048 bytes at offset 75776 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote 7168/7168 bytes at offset 67584 7 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 10240/10240 bytes at offset 65536 10 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 2048/2048 bytes at offset 75776 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) [{ "start": 0, "length": 65536, "depth": 1, "zero": true, "data": false}, { "start": 65536, "length": 8192, "depth": 0, "zero": true, "data": false}, { "start": 73728, "length": 4096, "depth": 0, "zero": false, "data": true, "offset": 20480}, { "start": 77824, "length": 134139904, "depth": 1, "zero": true, "data": false}] == spanning multiple clusters, partially overwriting backing file == Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=134217728 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file=TEST_DIR/t.IMGFMT.base wrote 10240/10240 bytes at offset 66560 10 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote 7168/7168 bytes at offset 67584 7 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 1024/1024 bytes at offset 65536 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 1024/1024 bytes at offset 66560 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 7168/7168 bytes at offset 67584 7 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 2048/2048 bytes at offset 74752 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 1024/1024 bytes at offset 76800 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) [{ "start": 0, "length": 65536, "depth": 1, "zero": true, "data": false}, { "start": 65536, "length": 4096, "depth": 0, "zero": false, "data": true, "offset": 20480}, { "start": 69632, "length": 4096, "depth": 0, "zero": true, "data": false}, { "start": 73728, "length": 4096, "depth": 0, "zero": false, "data": true, "offset": 24576}, { "start": 77824, "length": 134139904, "depth": 1, "zero": true, "data": false}] *** done