1QA output created by 112 2 3=== refcount_bits limits === 4 5qemu-img: TEST_DIR/t.IMGFMT: Refcount width must be a power of two and may not exceed 64 bits 6Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 7qemu-img: TEST_DIR/t.IMGFMT: Refcount width must be a power of two and may not exceed 64 bits 8Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 refcount_bits=-1 9qemu-img: TEST_DIR/t.IMGFMT: Refcount width must be a power of two and may not exceed 64 bits 10Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 11qemu-img: TEST_DIR/t.IMGFMT: Refcount width must be a power of two and may not exceed 64 bits 12Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 13Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 14refcount bits: 1 15Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 16refcount bits: 64 17Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 18refcount bits: 16 19 20=== refcount_bits and compat=0.10 === 21 22Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 23refcount bits: 16 24qemu-img: TEST_DIR/t.IMGFMT: Different refcount widths than 16 bits require compatibility level 1.1 or above (use version=v3 or greater) 25Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 26qemu-img: TEST_DIR/t.IMGFMT: Different refcount widths than 16 bits require compatibility level 1.1 or above (use version=v3 or greater) 27Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 28 29=== Snapshot limit on refcount_bits=1 === 30 31Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 32refcount bits: 1 33wrote 512/512 bytes at offset 0 34512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) 35qemu-img: Could not create snapshot 'foo': -22 (Invalid argument) 36Leaked cluster 6 refcount=1 reference=0 37 381 leaked clusters were found on the image. 39This means waste of disk space, but no harm to data. 40 41=== Snapshot limit on refcount_bits=2 === 42 43Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 44refcount bits: 2 45wrote 512/512 bytes at offset 0 46512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) 47qemu-img: Could not create snapshot 'baz': -22 (Invalid argument) 48Leaked cluster 7 refcount=1 reference=0 49 501 leaked clusters were found on the image. 51This means waste of disk space, but no harm to data. 52 53=== Compressed clusters with refcount_bits=1 === 54 55Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 56refcount bits: 1 57wrote 65536/65536 bytes at offset 0 5864 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) 59wrote 65536/65536 bytes at offset 65536 6064 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) 61No errors were found on the image. 62 63=== MSb set in 64 bit refcount === 64 65Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 66refcount bits: 64 67wrote 512/512 bytes at offset 0 68512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) 69wrote 512/512 bytes at offset 0 70512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) 71 72=== Snapshot on maximum 64 bit refcount value === 73 74Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 75refcount bits: 64 76wrote 512/512 bytes at offset 0 77512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) 78qemu-img: Could not create snapshot 'foo': -22 (Invalid argument) 79Leaked cluster 5 refcount=18446744073709551615 reference=1 80Leaked cluster 6 refcount=1 reference=0 81 822 leaked clusters were found on the image. 83This means waste of disk space, but no harm to data. 84 85=== Amend from refcount_bits=16 to refcount_bits=1 === 86 87Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 88refcount bits: 16 89wrote 33554432/33554432 bytes at offset 16777216 9032 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) 91No errors were found on the image. 92refcount bits: 1 93 94=== Amend from refcount_bits=1 to refcount_bits=64 === 95 96No errors were found on the image. 97refcount bits: 64 98 99=== Amend to compat=0.10 === 100 101qemu-img: compat=0.10 requires refcount_bits=16 102qemu-img: Error while amending options: Operation not supported 103refcount bits: 64 104No errors were found on the image. 105refcount bits: 16 106refcount bits: 16 107qemu-img: Different refcount widths than 16 bits require compatibility level 1.1 or above (use compat=1.1 or greater) 108qemu-img: Error while amending options: Invalid argument 109refcount bits: 16 110 111=== Amend with snapshot === 112 113wrote 16777216/16777216 bytes at offset 0 11416 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) 115qemu-img: Cannot decrease refcount entry width to 1 bits: Cluster at offset 0x50000 has a refcount of 2 116qemu-img: Error while amending options: Invalid argument 117No errors were found on the image. 118refcount bits: 16 119No errors were found on the image. 120refcount bits: 2 121 122=== Testing too many references for check === 123 124Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 125refcount bits: 1 126wrote 65536/65536 bytes at offset 0 12764 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) 128ERROR: overflow cluster offset=0x50000 129Use qemu-img amend to increase the refcount entry width or qemu-img convert to create a clean copy if the image cannot be opened for writing 130 1311 errors were found on the image. 132Data may be corrupted, or further writes to the image may corrupt it. 133refcount bits: 2 134ERROR cluster 5 refcount=1 reference=2 135Repairing cluster 5 refcount=1 reference=2 136Repairing OFLAG_COPIED data cluster: l2_entry=8000000000050000 refcount=2 137Repairing OFLAG_COPIED data cluster: l2_entry=8000000000050000 refcount=2 138The following inconsistencies were found and repaired: 139 140 0 leaked clusters 141 3 corruptions 142 143Double checking the fixed image now... 144No errors were found on the image. 145 146=== Multiple walks necessary during amend === 147 148Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=65536 149wrote 29696/29696 bytes at offset 0 15029 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) 151 (66.67/100%) 152 (50.00/100%) 153refcount bits: 64 154No errors were found on the image. 155*** done 156