{ "schemaVersion": 1, "experiment": "ddrescue-output-provenance", "generatedAt": "2026-10-18T05:23:15.836662+00:00", "evidenceType": "constructed-software-experiment", "faultMethod": "GNU ddrescue --test-mode; no physical device failures", "environment": { "python": "3.12.14", "kernel": "6.18.55", "system": "Linux", "machine": "x86_64", "versions": [ { "argv": [ "ddrescue", "--version" ], "returncode": 0, "stdout": "GNU ddrescue 1.30\nCopyright (C) 2026 Antonio Diaz Diaz.\nLicense GPLv2+: GNU GPL version 2 or later \nThis is free software: you are free to change and redistribute it.\nThere is NO WARRANTY, to the extent permitted by law.\n", "stderr": "" }, { "argv": [ "ddrescuelog", "--version" ], "returncode": 0, "stdout": "GNU ddrescuelog 1.30\nCopyright (C) 2026 Antonio Diaz Diaz.\nLicense GPLv2+: GNU GPL version 2 or later \nThis is free software: you are free to change and redistribute it.\nThere is NO WARRANTY, to the extent permitted by law.\n", "stderr": "" } ], "executableSha256": { "ddrescue": "a7eea3ce9cc7f1fd1fc7b8aae1e38002cb4097a2b18a6c5ef8e6bfa0544e468c", "ddrescuelog": "f407cd8892bdfb21335616416acad85163840e225b47404f42f37ff6b8e672dc" } }, "upstream": { "version": "1.30", "archiveUrl": "https://ftp.gnu.org/gnu/ddrescue/ddrescue-1.30.tar.lz", "archiveSha256": "2264622d309d6c87a1cfc19148292b8859a688e9bc02d4702f5cd4f288745542" }, "harnessSha256": "2b80ed1ae80fc1209fb528493d31e618efb64b1bfd71b9fe2b61550362189432", "source": { "bytes": 4096, "sectorBytes": 512, "sha256": "2d52d2f58e027b88b7f5487af54413141f1ebe868b9847c3286daeec99f99a2d", "sectors": [ "A", "00", "C", "D", "E", "F", "G", "H" ], "encoding": "512 repetitions of each ASCII byte; 00 is 512 zero bytes" }, "cases": [ { "id": "fresh-bad-data", "mode": "rescue", "destinationInitially": "absent", "sparse": false, "simulatedBadSector": 2, "operation": { "argv": [ "ddrescue", "--quiet", "--sector-size=512", "--cluster-size=1", "--retry-passes=0", "--test-mode=bad-data.map", "source.img", "fresh-bad-data.img", "fresh-bad-data.map" ], "returncode": 0, "stdout": "", "stderr": "" }, "doneStatus": { "argv": [ "ddrescuelog", "--done-status", "fresh-bad-data.map" ], "returncode": 1, "stdout": "", "stderr": "" }, "firstSectorDoneStatus": { "argv": [ "ddrescuelog", "--done-status", "--size=512", "fresh-bad-data.map" ], "returncode": 0, "stdout": "", "stderr": "" }, "imageBytes": 4096, "imageSha256": "f018401cb65be53daa0483a7581ccee9d5b5ac616fe77c5367995af50954f2cc", "sectorSha256": [ "32beecb58a128af8248504600bd203dcc676adf41045300485655e6b8780a01d", "076a27c79e5ace2a3d47f9dd2e83e4ff6ea8872b3c2218f66c92b89b55f36560", "076a27c79e5ace2a3d47f9dd2e83e4ff6ea8872b3c2218f66c92b89b55f36560", "fa381301af1b62fa259addbe7ae427fd54486abc7604ea7619e7a9c47965606d", "e4b0d4324dd30703dafa59e883b377855a978255e650aa78790ae8b05abd7242", "be9da2c7a85e4a76371cbc8d08ac8ca0fdca981dc8b05ed25c8a72d53cec128e", "e0a05b4574584211d2fb52b252b626b888704e811fe9a35443857dd89949bfc9", "a6e1997daf03cbb80714f521a4e01c96762c0750f1b084f551251ccd5d32ae4a" ], "matchesSourceBySector": [ true, true, false, true, true, true, true, true ], "matchingSourceBytes": 3584, "zeroSectors": [ 1, 2 ], "mapText": "# Mapfile. Created by GNU ddrescue version 1.30\n# Command line: /workspace/tmp/sources/ddrescue-1.30/ddrescue --quiet --sector-size=512 --cluster-size=1 --retry-passes=0 --test-mode=bad-data.map source.img fresh-bad-data.img fresh-bad-data.map\n# Start time: 2026-10-18 05:23:15\n# Current time: 2026-10-18 05:23:15\n# Finished\n# current_pos current_status current_pass\n0x00000800 + 2\n# pos size status\n0x00000000 0x00000400 +\n0x00000400 0x00000200 -\n0x00000600 0x00000A00 +\n", "mapBlocks": [ { "offset": 0, "length": 1024, "status": "+" }, { "offset": 1024, "length": 512, "status": "-" }, { "offset": 1536, "length": 2560, "status": "+" } ], "mapStatusBySector": [ "+", "+", "-", "+", "+", "+", "+", "+" ], "finishedBytes": 3584 }, { "id": "reused-bad-data", "mode": "rescue", "destinationInitially": "Z-filled", "sparse": false, "simulatedBadSector": 2, "operation": { "argv": [ "ddrescue", "--quiet", "--sector-size=512", "--cluster-size=1", "--retry-passes=0", "--test-mode=bad-data.map", "source.img", "reused-bad-data.img", "reused-bad-data.map" ], "returncode": 0, "stdout": "", "stderr": "" }, "doneStatus": { "argv": [ "ddrescuelog", "--done-status", "reused-bad-data.map" ], "returncode": 1, "stdout": "", "stderr": "" }, "firstSectorDoneStatus": { "argv": [ "ddrescuelog", "--done-status", "--size=512", "reused-bad-data.map" ], "returncode": 0, "stdout": "", "stderr": "" }, "imageBytes": 4096, "imageSha256": "a4c7d3691b80efb7b0373c42ee61f269d612a9be4256bbc8858a8f0758d05491", "sectorSha256": [ "32beecb58a128af8248504600bd203dcc676adf41045300485655e6b8780a01d", "076a27c79e5ace2a3d47f9dd2e83e4ff6ea8872b3c2218f66c92b89b55f36560", "a863e21577e54cd763729803a621804da4b5030afa35bcf879ea3b3413488a66", "fa381301af1b62fa259addbe7ae427fd54486abc7604ea7619e7a9c47965606d", "e4b0d4324dd30703dafa59e883b377855a978255e650aa78790ae8b05abd7242", "be9da2c7a85e4a76371cbc8d08ac8ca0fdca981dc8b05ed25c8a72d53cec128e", "e0a05b4574584211d2fb52b252b626b888704e811fe9a35443857dd89949bfc9", "a6e1997daf03cbb80714f521a4e01c96762c0750f1b084f551251ccd5d32ae4a" ], "matchesSourceBySector": [ true, true, false, true, true, true, true, true ], "matchingSourceBytes": 3584, "zeroSectors": [ 1 ], "mapText": "# Mapfile. Created by GNU ddrescue version 1.30\n# Command line: /workspace/tmp/sources/ddrescue-1.30/ddrescue --quiet --sector-size=512 --cluster-size=1 --retry-passes=0 --test-mode=bad-data.map source.img reused-bad-data.img reused-bad-data.map\n# Start time: 2026-10-18 05:23:15\n# Current time: 2026-10-18 05:23:15\n# Finished\n# current_pos current_status current_pass\n0x00000800 + 2\n# pos size status\n0x00000000 0x00000400 +\n0x00000400 0x00000200 -\n0x00000600 0x00000A00 +\n", "mapBlocks": [ { "offset": 0, "length": 1024, "status": "+" }, { "offset": 1024, "length": 512, "status": "-" }, { "offset": 1536, "length": 2560, "status": "+" } ], "mapStatusBySector": [ "+", "+", "-", "+", "+", "+", "+", "+" ], "finishedBytes": 3584 }, { "id": "fresh-bad-zero", "mode": "rescue", "destinationInitially": "absent", "sparse": false, "simulatedBadSector": 1, "operation": { "argv": [ "ddrescue", "--quiet", "--sector-size=512", "--cluster-size=1", "--retry-passes=0", "--test-mode=bad-zero.map", "source.img", "fresh-bad-zero.img", "fresh-bad-zero.map" ], "returncode": 0, "stdout": "", "stderr": "" }, "doneStatus": { "argv": [ "ddrescuelog", "--done-status", "fresh-bad-zero.map" ], "returncode": 1, "stdout": "", "stderr": "" }, "firstSectorDoneStatus": { "argv": [ "ddrescuelog", "--done-status", "--size=512", "fresh-bad-zero.map" ], "returncode": 0, "stdout": "", "stderr": "" }, "imageBytes": 4096, "imageSha256": "2d52d2f58e027b88b7f5487af54413141f1ebe868b9847c3286daeec99f99a2d", "sectorSha256": [ "32beecb58a128af8248504600bd203dcc676adf41045300485655e6b8780a01d", "076a27c79e5ace2a3d47f9dd2e83e4ff6ea8872b3c2218f66c92b89b55f36560", "2ab0e56ff48de274010e5f0c4dc6ce87c401f118a9f505fccb828856d078d0d2", "fa381301af1b62fa259addbe7ae427fd54486abc7604ea7619e7a9c47965606d", "e4b0d4324dd30703dafa59e883b377855a978255e650aa78790ae8b05abd7242", "be9da2c7a85e4a76371cbc8d08ac8ca0fdca981dc8b05ed25c8a72d53cec128e", "e0a05b4574584211d2fb52b252b626b888704e811fe9a35443857dd89949bfc9", "a6e1997daf03cbb80714f521a4e01c96762c0750f1b084f551251ccd5d32ae4a" ], "matchesSourceBySector": [ true, true, true, true, true, true, true, true ], "matchingSourceBytes": 4096, "zeroSectors": [ 1 ], "mapText": "# Mapfile. Created by GNU ddrescue version 1.30\n# Command line: /workspace/tmp/sources/ddrescue-1.30/ddrescue --quiet --sector-size=512 --cluster-size=1 --retry-passes=0 --test-mode=bad-zero.map source.img fresh-bad-zero.img fresh-bad-zero.map\n# Start time: 2026-10-18 05:23:15\n# Current time: 2026-10-18 05:23:15\n# Finished\n# current_pos current_status current_pass\n0x00000600 + 2\n# pos size status\n0x00000000 0x00000200 +\n0x00000200 0x00000200 -\n0x00000400 0x00000C00 +\n", "mapBlocks": [ { "offset": 0, "length": 512, "status": "+" }, { "offset": 512, "length": 512, "status": "-" }, { "offset": 1024, "length": 3072, "status": "+" } ], "mapStatusBySector": [ "+", "-", "+", "+", "+", "+", "+", "+" ], "finishedBytes": 3584 }, { "id": "fresh-healthy", "mode": "rescue", "destinationInitially": "absent", "sparse": false, "simulatedBadSector": null, "operation": { "argv": [ "ddrescue", "--quiet", "--sector-size=512", "--cluster-size=1", "--retry-passes=0", "source.img", "fresh-healthy.img", "fresh-healthy.map" ], "returncode": 0, "stdout": "", "stderr": "" }, "doneStatus": { "argv": [ "ddrescuelog", "--done-status", "fresh-healthy.map" ], "returncode": 0, "stdout": "", "stderr": "" }, "firstSectorDoneStatus": { "argv": [ "ddrescuelog", "--done-status", "--size=512", "fresh-healthy.map" ], "returncode": 0, "stdout": "", "stderr": "" }, "imageBytes": 4096, "imageSha256": "2d52d2f58e027b88b7f5487af54413141f1ebe868b9847c3286daeec99f99a2d", "sectorSha256": [ "32beecb58a128af8248504600bd203dcc676adf41045300485655e6b8780a01d", "076a27c79e5ace2a3d47f9dd2e83e4ff6ea8872b3c2218f66c92b89b55f36560", "2ab0e56ff48de274010e5f0c4dc6ce87c401f118a9f505fccb828856d078d0d2", "fa381301af1b62fa259addbe7ae427fd54486abc7604ea7619e7a9c47965606d", "e4b0d4324dd30703dafa59e883b377855a978255e650aa78790ae8b05abd7242", "be9da2c7a85e4a76371cbc8d08ac8ca0fdca981dc8b05ed25c8a72d53cec128e", "e0a05b4574584211d2fb52b252b626b888704e811fe9a35443857dd89949bfc9", "a6e1997daf03cbb80714f521a4e01c96762c0750f1b084f551251ccd5d32ae4a" ], "matchesSourceBySector": [ true, true, true, true, true, true, true, true ], "matchingSourceBytes": 4096, "zeroSectors": [ 1 ], "mapText": "# Mapfile. Created by GNU ddrescue version 1.30\n# Command line: /workspace/tmp/sources/ddrescue-1.30/ddrescue --quiet --sector-size=512 --cluster-size=1 --retry-passes=0 source.img fresh-healthy.img fresh-healthy.map\n# Start time: 2026-10-18 05:23:15\n# Current time: 2026-10-18 05:23:15\n# Finished\n# current_pos current_status current_pass\n0x00000E00 + 1\n# pos size status\n0x00000000 0x00001000 +\n", "mapBlocks": [ { "offset": 0, "length": 4096, "status": "+" } ], "mapStatusBySector": [ "+", "+", "+", "+", "+", "+", "+", "+" ], "finishedBytes": 4096 }, { "id": "sparse-fresh-healthy", "mode": "rescue", "destinationInitially": "absent", "sparse": true, "simulatedBadSector": null, "operation": { "argv": [ "ddrescue", "--quiet", "--sector-size=512", "--cluster-size=1", "--retry-passes=0", "--sparse", "source.img", "sparse-fresh-healthy.img", "sparse-fresh-healthy.map" ], "returncode": 0, "stdout": "", "stderr": "" }, "doneStatus": { "argv": [ "ddrescuelog", "--done-status", "sparse-fresh-healthy.map" ], "returncode": 0, "stdout": "", "stderr": "" }, "firstSectorDoneStatus": { "argv": [ "ddrescuelog", "--done-status", "--size=512", "sparse-fresh-healthy.map" ], "returncode": 0, "stdout": "", "stderr": "" }, "imageBytes": 4096, "imageSha256": "2d52d2f58e027b88b7f5487af54413141f1ebe868b9847c3286daeec99f99a2d", "sectorSha256": [ "32beecb58a128af8248504600bd203dcc676adf41045300485655e6b8780a01d", "076a27c79e5ace2a3d47f9dd2e83e4ff6ea8872b3c2218f66c92b89b55f36560", "2ab0e56ff48de274010e5f0c4dc6ce87c401f118a9f505fccb828856d078d0d2", "fa381301af1b62fa259addbe7ae427fd54486abc7604ea7619e7a9c47965606d", "e4b0d4324dd30703dafa59e883b377855a978255e650aa78790ae8b05abd7242", "be9da2c7a85e4a76371cbc8d08ac8ca0fdca981dc8b05ed25c8a72d53cec128e", "e0a05b4574584211d2fb52b252b626b888704e811fe9a35443857dd89949bfc9", "a6e1997daf03cbb80714f521a4e01c96762c0750f1b084f551251ccd5d32ae4a" ], "matchesSourceBySector": [ true, true, true, true, true, true, true, true ], "matchingSourceBytes": 4096, "zeroSectors": [ 1 ], "mapText": "# Mapfile. Created by GNU ddrescue version 1.30\n# Command line: /workspace/tmp/sources/ddrescue-1.30/ddrescue --quiet --sector-size=512 --cluster-size=1 --retry-passes=0 --sparse source.img sparse-fresh-healthy.img sparse-fresh-healthy.map\n# Start time: 2026-10-18 05:23:15\n# Current time: 2026-10-18 05:23:15\n# Finished\n# current_pos current_status current_pass\n0x00000E00 + 1\n# pos size status\n0x00000000 0x00001000 +\n", "mapBlocks": [ { "offset": 0, "length": 4096, "status": "+" } ], "mapStatusBySector": [ "+", "+", "+", "+", "+", "+", "+", "+" ], "finishedBytes": 4096 }, { "id": "sparse-reused-healthy", "mode": "rescue", "destinationInitially": "Z-filled", "sparse": true, "simulatedBadSector": null, "operation": { "argv": [ "ddrescue", "--quiet", "--sector-size=512", "--cluster-size=1", "--retry-passes=0", "--sparse", "source.img", "sparse-reused-healthy.img", "sparse-reused-healthy.map" ], "returncode": 0, "stdout": "", "stderr": "" }, "doneStatus": { "argv": [ "ddrescuelog", "--done-status", "sparse-reused-healthy.map" ], "returncode": 0, "stdout": "", "stderr": "" }, "firstSectorDoneStatus": { "argv": [ "ddrescuelog", "--done-status", "--size=512", "sparse-reused-healthy.map" ], "returncode": 0, "stdout": "", "stderr": "" }, "imageBytes": 4096, "imageSha256": "6d10c447de8e64ce6b2ac6c1a485af0825b089c479d15d91d06426f4b6632eec", "sectorSha256": [ "32beecb58a128af8248504600bd203dcc676adf41045300485655e6b8780a01d", "a863e21577e54cd763729803a621804da4b5030afa35bcf879ea3b3413488a66", "2ab0e56ff48de274010e5f0c4dc6ce87c401f118a9f505fccb828856d078d0d2", "fa381301af1b62fa259addbe7ae427fd54486abc7604ea7619e7a9c47965606d", "e4b0d4324dd30703dafa59e883b377855a978255e650aa78790ae8b05abd7242", "be9da2c7a85e4a76371cbc8d08ac8ca0fdca981dc8b05ed25c8a72d53cec128e", "e0a05b4574584211d2fb52b252b626b888704e811fe9a35443857dd89949bfc9", "a6e1997daf03cbb80714f521a4e01c96762c0750f1b084f551251ccd5d32ae4a" ], "matchesSourceBySector": [ true, false, true, true, true, true, true, true ], "matchingSourceBytes": 3584, "zeroSectors": [], "mapText": "# Mapfile. Created by GNU ddrescue version 1.30\n# Command line: /workspace/tmp/sources/ddrescue-1.30/ddrescue --quiet --sector-size=512 --cluster-size=1 --retry-passes=0 --sparse source.img sparse-reused-healthy.img sparse-reused-healthy.map\n# Start time: 2026-10-18 05:23:15\n# Current time: 2026-10-18 05:23:15\n# Finished\n# current_pos current_status current_pass\n0x00000E00 + 1\n# pos size status\n0x00000000 0x00001000 +\n", "mapBlocks": [ { "offset": 0, "length": 4096, "status": "+" } ], "mapStatusBySector": [ "+", "+", "+", "+", "+", "+", "+", "+" ], "finishedBytes": 4096 }, { "id": "sparse-reused-bad-data", "mode": "rescue", "destinationInitially": "Z-filled", "sparse": true, "simulatedBadSector": 2, "operation": { "argv": [ "ddrescue", "--quiet", "--sector-size=512", "--cluster-size=1", "--retry-passes=0", "--sparse", "--test-mode=bad-data.map", "source.img", "sparse-reused-bad-data.img", "sparse-reused-bad-data.map" ], "returncode": 0, "stdout": "", "stderr": "" }, "doneStatus": { "argv": [ "ddrescuelog", "--done-status", "sparse-reused-bad-data.map" ], "returncode": 1, "stdout": "", "stderr": "" }, "firstSectorDoneStatus": { "argv": [ "ddrescuelog", "--done-status", "--size=512", "sparse-reused-bad-data.map" ], "returncode": 0, "stdout": "", "stderr": "" }, "imageBytes": 4096, "imageSha256": "a6b477d42e7e818375085ae831f7db19ca2bc565ecbb396bf00de657c32ffe71", "sectorSha256": [ "32beecb58a128af8248504600bd203dcc676adf41045300485655e6b8780a01d", "a863e21577e54cd763729803a621804da4b5030afa35bcf879ea3b3413488a66", "a863e21577e54cd763729803a621804da4b5030afa35bcf879ea3b3413488a66", "fa381301af1b62fa259addbe7ae427fd54486abc7604ea7619e7a9c47965606d", "e4b0d4324dd30703dafa59e883b377855a978255e650aa78790ae8b05abd7242", "be9da2c7a85e4a76371cbc8d08ac8ca0fdca981dc8b05ed25c8a72d53cec128e", "e0a05b4574584211d2fb52b252b626b888704e811fe9a35443857dd89949bfc9", "a6e1997daf03cbb80714f521a4e01c96762c0750f1b084f551251ccd5d32ae4a" ], "matchesSourceBySector": [ true, false, false, true, true, true, true, true ], "matchingSourceBytes": 3072, "zeroSectors": [], "mapText": "# Mapfile. Created by GNU ddrescue version 1.30\n# Command line: /workspace/tmp/sources/ddrescue-1.30/ddrescue --quiet --sector-size=512 --cluster-size=1 --retry-passes=0 --sparse --test-mode=bad-data.map source.img sparse-reused-bad-data.img sparse-reused-bad-data.map\n# Start time: 2026-10-18 05:23:15\n# Current time: 2026-10-18 05:23:15\n# Finished\n# current_pos current_status current_pass\n0x00000800 + 2\n# pos size status\n0x00000000 0x00000400 +\n0x00000400 0x00000200 -\n0x00000600 0x00000A00 +\n", "mapBlocks": [ { "offset": 0, "length": 1024, "status": "+" }, { "offset": 1024, "length": 512, "status": "-" }, { "offset": 1536, "length": 2560, "status": "+" } ], "mapStatusBySector": [ "+", "+", "-", "+", "+", "+", "+", "+" ], "finishedBytes": 3584 }, { "id": "resume-sparse-reused", "mode": "resume", "parentCase": "sparse-reused-bad-data", "sparse": false, "simulatedBadSector": null, "operation": { "argv": [ "ddrescue", "--quiet", "--sector-size=512", "--cluster-size=1", "--retry-passes=1", "source.img", "sparse-reused-bad-data.img", "sparse-reused-bad-data.map" ], "returncode": 0, "stdout": "", "stderr": "" }, "doneStatus": { "argv": [ "ddrescuelog", "--done-status", "sparse-reused-bad-data.map" ], "returncode": 0, "stdout": "", "stderr": "" }, "firstSectorDoneStatus": { "argv": [ "ddrescuelog", "--done-status", "--size=512", "sparse-reused-bad-data.map" ], "returncode": 0, "stdout": "", "stderr": "" }, "imageBytes": 4096, "imageSha256": "6d10c447de8e64ce6b2ac6c1a485af0825b089c479d15d91d06426f4b6632eec", "sectorSha256": [ "32beecb58a128af8248504600bd203dcc676adf41045300485655e6b8780a01d", "a863e21577e54cd763729803a621804da4b5030afa35bcf879ea3b3413488a66", "2ab0e56ff48de274010e5f0c4dc6ce87c401f118a9f505fccb828856d078d0d2", "fa381301af1b62fa259addbe7ae427fd54486abc7604ea7619e7a9c47965606d", "e4b0d4324dd30703dafa59e883b377855a978255e650aa78790ae8b05abd7242", "be9da2c7a85e4a76371cbc8d08ac8ca0fdca981dc8b05ed25c8a72d53cec128e", "e0a05b4574584211d2fb52b252b626b888704e811fe9a35443857dd89949bfc9", "a6e1997daf03cbb80714f521a4e01c96762c0750f1b084f551251ccd5d32ae4a" ], "matchesSourceBySector": [ true, false, true, true, true, true, true, true ], "matchingSourceBytes": 3584, "zeroSectors": [], "mapText": "# Mapfile. Created by GNU ddrescue version 1.30\n# Command line: /workspace/tmp/sources/ddrescue-1.30/ddrescue --quiet --sector-size=512 --cluster-size=1 --retry-passes=1 source.img sparse-reused-bad-data.img sparse-reused-bad-data.map\n# Start time: 2026-10-18 05:23:15\n# Current time: 2026-10-18 05:23:15\n# Finished\n# current_pos current_status current_pass\n0x00000400 + 1\n# pos size status\n0x00000000 0x00001000 +\n", "mapBlocks": [ { "offset": 0, "length": 4096, "status": "+" } ], "mapStatusBySector": [ "+", "+", "+", "+", "+", "+", "+", "+" ], "finishedBytes": 4096 }, { "id": "generated-fresh-bad-data", "mode": "generate", "parentCase": "fresh-bad-data", "generatedMapIsApproximate": true, "operation": { "argv": [ "ddrescue", "--quiet", "--sector-size=512", "--generate-mode", "source.img", "generated-fresh-bad-data.img", "generated-fresh-bad-data.map" ], "returncode": 0, "stdout": "", "stderr": "" }, "doneStatus": { "argv": [ "ddrescuelog", "--done-status", "generated-fresh-bad-data.map" ], "returncode": 1, "stdout": "", "stderr": "" }, "firstSectorDoneStatus": { "argv": [ "ddrescuelog", "--done-status", "--size=512", "generated-fresh-bad-data.map" ], "returncode": 0, "stdout": "", "stderr": "" }, "imageBytes": 4096, "imageSha256": "f018401cb65be53daa0483a7581ccee9d5b5ac616fe77c5367995af50954f2cc", "sectorSha256": [ "32beecb58a128af8248504600bd203dcc676adf41045300485655e6b8780a01d", "076a27c79e5ace2a3d47f9dd2e83e4ff6ea8872b3c2218f66c92b89b55f36560", "076a27c79e5ace2a3d47f9dd2e83e4ff6ea8872b3c2218f66c92b89b55f36560", "fa381301af1b62fa259addbe7ae427fd54486abc7604ea7619e7a9c47965606d", "e4b0d4324dd30703dafa59e883b377855a978255e650aa78790ae8b05abd7242", "be9da2c7a85e4a76371cbc8d08ac8ca0fdca981dc8b05ed25c8a72d53cec128e", "e0a05b4574584211d2fb52b252b626b888704e811fe9a35443857dd89949bfc9", "a6e1997daf03cbb80714f521a4e01c96762c0750f1b084f551251ccd5d32ae4a" ], "matchesSourceBySector": [ true, true, false, true, true, true, true, true ], "matchingSourceBytes": 3584, "zeroSectors": [ 1, 2 ], "mapText": "# Mapfile. Created by GNU ddrescue version 1.30\n# Command line: /workspace/tmp/sources/ddrescue-1.30/ddrescue --quiet --sector-size=512 --generate-mode source.img generated-fresh-bad-data.img generated-fresh-bad-data.map\n# Start time: 2026-10-18 05:23:15\n# Current time: 2026-10-18 05:23:15\n# Finished\n# current_pos current_status current_pass\n0x00000000 + 1\n# pos size status\n0x00000000 0x00000200 +\n0x00000200 0x00000400 ?\n0x00000600 0x00000A00 +\n", "mapBlocks": [ { "offset": 0, "length": 512, "status": "+" }, { "offset": 512, "length": 1024, "status": "?" }, { "offset": 1536, "length": 2560, "status": "+" } ], "mapStatusBySector": [ "+", "?", "?", "+", "+", "+", "+", "+" ], "finishedBytes": 3072 }, { "id": "generated-reused-bad-data", "mode": "generate", "parentCase": "reused-bad-data", "generatedMapIsApproximate": true, "operation": { "argv": [ "ddrescue", "--quiet", "--sector-size=512", "--generate-mode", "source.img", "generated-reused-bad-data.img", "generated-reused-bad-data.map" ], "returncode": 0, "stdout": "", "stderr": "" }, "doneStatus": { "argv": [ "ddrescuelog", "--done-status", "generated-reused-bad-data.map" ], "returncode": 1, "stdout": "", "stderr": "" }, "firstSectorDoneStatus": { "argv": [ "ddrescuelog", "--done-status", "--size=512", "generated-reused-bad-data.map" ], "returncode": 0, "stdout": "", "stderr": "" }, "imageBytes": 4096, "imageSha256": "a4c7d3691b80efb7b0373c42ee61f269d612a9be4256bbc8858a8f0758d05491", "sectorSha256": [ "32beecb58a128af8248504600bd203dcc676adf41045300485655e6b8780a01d", "076a27c79e5ace2a3d47f9dd2e83e4ff6ea8872b3c2218f66c92b89b55f36560", "a863e21577e54cd763729803a621804da4b5030afa35bcf879ea3b3413488a66", "fa381301af1b62fa259addbe7ae427fd54486abc7604ea7619e7a9c47965606d", "e4b0d4324dd30703dafa59e883b377855a978255e650aa78790ae8b05abd7242", "be9da2c7a85e4a76371cbc8d08ac8ca0fdca981dc8b05ed25c8a72d53cec128e", "e0a05b4574584211d2fb52b252b626b888704e811fe9a35443857dd89949bfc9", "a6e1997daf03cbb80714f521a4e01c96762c0750f1b084f551251ccd5d32ae4a" ], "matchesSourceBySector": [ true, true, false, true, true, true, true, true ], "matchingSourceBytes": 3584, "zeroSectors": [ 1 ], "mapText": "# Mapfile. Created by GNU ddrescue version 1.30\n# Command line: /workspace/tmp/sources/ddrescue-1.30/ddrescue --quiet --sector-size=512 --generate-mode source.img generated-reused-bad-data.img generated-reused-bad-data.map\n# Start time: 2026-10-18 05:23:15\n# Current time: 2026-10-18 05:23:15\n# Finished\n# current_pos current_status current_pass\n0x00000000 + 1\n# pos size status\n0x00000000 0x00000200 +\n0x00000200 0x00000200 ?\n0x00000400 0x00000C00 +\n", "mapBlocks": [ { "offset": 0, "length": 512, "status": "+" }, { "offset": 512, "length": 512, "status": "?" }, { "offset": 1024, "length": 3072, "status": "+" } ], "mapStatusBySector": [ "+", "?", "+", "+", "+", "+", "+", "+" ], "finishedBytes": 3584 }, { "id": "generated-sparse-reused-bad-data", "mode": "generate", "parentCase": "sparse-reused-bad-data", "generatedMapIsApproximate": true, "operation": { "argv": [ "ddrescue", "--quiet", "--sector-size=512", "--generate-mode", "source.img", "generated-sparse-reused-bad-data.img", "generated-sparse-reused-bad-data.map" ], "returncode": 0, "stdout": "", "stderr": "" }, "doneStatus": { "argv": [ "ddrescuelog", "--done-status", "generated-sparse-reused-bad-data.map" ], "returncode": 0, "stdout": "", "stderr": "" }, "firstSectorDoneStatus": { "argv": [ "ddrescuelog", "--done-status", "--size=512", "generated-sparse-reused-bad-data.map" ], "returncode": 0, "stdout": "", "stderr": "" }, "imageBytes": 4096, "imageSha256": "a6b477d42e7e818375085ae831f7db19ca2bc565ecbb396bf00de657c32ffe71", "sectorSha256": [ "32beecb58a128af8248504600bd203dcc676adf41045300485655e6b8780a01d", "a863e21577e54cd763729803a621804da4b5030afa35bcf879ea3b3413488a66", "a863e21577e54cd763729803a621804da4b5030afa35bcf879ea3b3413488a66", "fa381301af1b62fa259addbe7ae427fd54486abc7604ea7619e7a9c47965606d", "e4b0d4324dd30703dafa59e883b377855a978255e650aa78790ae8b05abd7242", "be9da2c7a85e4a76371cbc8d08ac8ca0fdca981dc8b05ed25c8a72d53cec128e", "e0a05b4574584211d2fb52b252b626b888704e811fe9a35443857dd89949bfc9", "a6e1997daf03cbb80714f521a4e01c96762c0750f1b084f551251ccd5d32ae4a" ], "matchesSourceBySector": [ true, false, false, true, true, true, true, true ], "matchingSourceBytes": 3072, "zeroSectors": [], "mapText": "# Mapfile. Created by GNU ddrescue version 1.30\n# Command line: /workspace/tmp/sources/ddrescue-1.30/ddrescue --quiet --sector-size=512 --generate-mode source.img generated-sparse-reused-bad-data.img generated-sparse-reused-bad-data.map\n# Start time: 2026-10-18 05:23:15\n# Current time: 2026-10-18 05:23:15\n# Finished\n# current_pos current_status current_pass\n0x00000000 + 1\n# pos size status\n0x00000000 0x00001000 +\n", "mapBlocks": [ { "offset": 0, "length": 4096, "status": "+" } ], "mapStatusBySector": [ "+", "+", "+", "+", "+", "+", "+", "+" ], "finishedBytes": 4096 }, { "id": "modified-after-completion", "mode": "post-copy-modification", "parentCase": "fresh-healthy", "operation": { "argv": [ "fixture-sector-overwrite", "sector=3", "byte=0x58" ], "returncode": 0, "stdout": "", "stderr": "" }, "doneStatus": { "argv": [ "ddrescuelog", "--done-status", "modified.map" ], "returncode": 0, "stdout": "", "stderr": "" }, "firstSectorDoneStatus": { "argv": [ "ddrescuelog", "--done-status", "--size=512", "modified.map" ], "returncode": 0, "stdout": "", "stderr": "" }, "imageBytes": 4096, "imageSha256": "999474e2a3043de78c92b81091a9e2dabc55f729e462389793055817583943cf", "sectorSha256": [ "32beecb58a128af8248504600bd203dcc676adf41045300485655e6b8780a01d", "076a27c79e5ace2a3d47f9dd2e83e4ff6ea8872b3c2218f66c92b89b55f36560", "2ab0e56ff48de274010e5f0c4dc6ce87c401f118a9f505fccb828856d078d0d2", "6d1658a92a0c35551c1e935c4c616b3d1876f2129300aa0e042e62608889cc4b", "e4b0d4324dd30703dafa59e883b377855a978255e650aa78790ae8b05abd7242", "be9da2c7a85e4a76371cbc8d08ac8ca0fdca981dc8b05ed25c8a72d53cec128e", "e0a05b4574584211d2fb52b252b626b888704e811fe9a35443857dd89949bfc9", "a6e1997daf03cbb80714f521a4e01c96762c0750f1b084f551251ccd5d32ae4a" ], "matchesSourceBySector": [ true, true, true, false, true, true, true, true ], "matchingSourceBytes": 3584, "zeroSectors": [ 1 ], "mapText": "# Mapfile. Created by GNU ddrescue version 1.30\n# Command line: /workspace/tmp/sources/ddrescue-1.30/ddrescue --quiet --sector-size=512 --cluster-size=1 --retry-passes=0 source.img fresh-healthy.img fresh-healthy.map\n# Start time: 2026-10-18 05:23:15\n# Current time: 2026-10-18 05:23:15\n# Finished\n# current_pos current_status current_pass\n0x00000E00 + 1\n# pos size status\n0x00000000 0x00001000 +\n", "mapBlocks": [ { "offset": 0, "length": 4096, "status": "+" } ], "mapStatusBySector": [ "+", "+", "+", "+", "+", "+", "+", "+" ], "finishedBytes": 4096 } ], "limitations": [ "Regular files only; software-simulated read errors.", "One upstream version and build; no hardware recovery rates, power-loss or timing claims.", "Map '+' describes rescue bookkeeping, not a digest comparison with the source.", "Reused sparse output intentionally violates the documented empty-or-zeroed destination precondition." ] }