{"id":15373017,"url":"https://github.com/vi/outoforderfs","last_synced_at":"2025-04-15T14:13:33.512Z","repository":{"id":57650930,"uuid":"54293066","full_name":"vi/outoforderfs","owner":"vi","description":"FUSE single-file filesystem simulating dirty block device shutdown (each write is delayed 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outoforderfs\nFUSE single-file filesystem simulating dirty block device shutdown (each write is delayed randomly)\n\n```\n$ target/debug/outoforderfs\nUsage: outoforderfs source_file mountpoint_file blocksize maxtime_ms maxdirtyblocks\n outoforderfs 'mirrors' source file to mountpoint_file,\n but writes to mountpoint_file get delivered\n to source_file after a random delay, in random order.\n The reason is to see what happens of some other FS in case of\n surprise removal (or sudden shutdown) of the storage.\nExample session (approximate):\n 1$ dd if=/dev/zero bs=4096 count=2560 of=sf.dat\n 1$ touch mp.dat\n 1$ outoforderfs sf.dat mp.dat 4096 10000 100\n 1$ (switch to a new tab)\n 2$ mkfs mp.dat\n 2$ mount mp.dat -o loop mnt\n 2$ start using mnt (filling with logs, creating sqlite, etc)\n 1$ ^C\n 1$ outoforderfs sf.dat mp.dat 4096 10000 100\n 2$ umount mnt\n 2$ mount mp.dat -o loop mnt\n 2$ inspect mnt for breakage, incomplete/zeroed files, etc\n```\n\nEye-catcher:\n\n```\n$ ./visualtest.sh \n# write 80 spaces to sf.dat\n+ target/debug/outoforderfs sf.dat mp.dat 1 5000 1000\n# write 80 dots to mp.dat\n# Contant of sf.dat against time\n \n . \n . . \n . ..\n . . . . ..\n . . . . ..\n . . . . ..\n . . . . . ..\n . . . . . ..\n .. . . . . . . ..\n .. . . . . . . ..\n .. . . . . . . ..\n .. . . . . . . ..\n .. . . . . . . ..\n .. . . . . . . ..\n .. . . . . . . . ..\n ... . . . . . . . . ..\n ... . . . . . . . . ..\n ... . . . . . . . . ..\n ... . . . . . . . . ..\n ... . . . . . . . . . . ..\n . ... . . . . . . . . . . ..\n . .... . . . . . . . . . . ..\n . .... . . . . . . . . . . ..\n . .... . . . . . . . . . . . ..\n . .... . . . . . . . . . . . ..\n . .... . . . . . . . . . . . . ..\n . .... . . . . . . . .. . . . . ..\n . .... . . . . . . . .. . . . . ..\n . .... . . . . . . . .. . . . . ..\n . ..... . .. . . . . . .. . . . . ..\n . ..... . .. . . . . . .. . . . . ..\n . ..... . .. . . . . . .. . . . . .. ..\n . ..... . .. . . . . . .. . . . . .. ..\n . ..... . .. . . .. . . .. . . . . .. ..\n . ..... . .. . . .. . . .. . . . . .. ..\n . ..... . .. . . .. . . .. . . . . .. ..\n .. ..... . .. . . .. . . .. . . . . ... ..\n .. ..... . .. . . .. . . .. . . . . . ... ..\n .. ..... . .. . . .. . . .... . . . . . ... ..\n .. ..... . .. . . .. . . .... . . . . . ... ..\n .. ..... . .. . . .. . . . .... . . . . . . ... ..\n . .. ..... . .. . . .. . . . .... . . . . . . ... ..\n . .. ..... . .. . . .. . . . .... ... . . . . . ... ..\n . .. ..... . .. . . .. . . . .... ... . . . . . ... ..\n . .. ..... . .. . . .. . . . .... ... . . . . . ... ..\n . . .. ..... . .. . . .. . . . .... ... . . . . . ... ..\n . . .. ..... . .. . . .. .. . . .... ... . . . . . ... ..\n . . .. ..... . .. . . .. .. . . .... ... . . . . . ... ..\n . . .. ..... . . .. . . .. .. . . .... ... . . . . . ... ..\n# Now write 80 asterisks to mp.dat\n . . .. ..... . . .. .. . .. .. . . .... ... . . . . . ... ..\n . . .. ..... . . .. .. . .. .. . . .... ... . . . . . ... ..\n . . *. ..... . . .. ..*. .. .. * . .... ... . . . . *. ... ..\n . . *. ..... . . .. ..*. .. .. * . .... ... * . . . *. ... ..\n . . *. ..... . . .. ..*. .. .. * . .... ... * . . . *. ... ..\n . *. *. ..... . . .. ..*. .. .. * . .... ... * . . . *. ... ..\n . *. *. ...*. . . .. ..*. .. .. * . .... ... * . . . *. ... ..\n . *. *. ...*. . . .. ..*. .. .. * . .... ... * . . . *. ... ..\n . *. *. ...*. . . .. ..*. .. .* * . .... ... * . . . *. ... ..\n . *. *. ...*. . . .. ..*. .. .* * . .... ... * . . . *. ... ..\n . *. *. ...*. . . .. ..*. .. .* * . .... ... * . . . *. ... ..\n . *. *. ...*. . . .. ..*. .. .* * . .... ... * .*. . *. ... ..\n . *. *. ...*. . . .. ..*. .. .* * . .*.. ... * .*. . ** ... ..\n . *. *. ...*. . . .. ..*. .. .* * . .*.. ... * .*. . ** ... ..\n . *. *. ...*. . . .. ..*. .. .* * . .*.. ... * .*. . ** ... ..\n . *. *. ...*. . . .. ..*. .. * .* * . .*.. ... * .*. . ** ... ..\n . *. *. ...** * *. .. ..*. .. * .* * . .*.. ... * .*. . ** ... ..\n . *. *. ...** * *. .. ..*. .. * .* * . .*.. ... * .*. . ** ... ..\n . *. *. ...** * *. .. ..*. .. * .* * . .*.. ... * .*. . ** ... ..\n . *. *. ...** * *. .. ..*. .. * .* * . .*.. ... * .*. . ** ... ..\n . *. *. ...** * *. .. ..*. .. * .* * * . .*.. ... * .*. . ** ... ..\n . *. *. ...** * *. .. ..*. .* * .* * * . .*.. ... * .*. . ** ...* ..\n . *. *. ...** * **. .. ..*. .* * .* * * . .*.. *... * .*. . ** ...* ..\n . *. *. ...** * **.*.. ..*. .* * .* * * . .*.. *... * .*. . ** ...* ..\n . *. *. ...** * **.*.. ..*.*.* * .* * * . .*..**... * .*. . *** ...* ..\n . *. *. ...** * **.*.. ..*.*.* * .* * * . .*..**... * .*. . *** ...* ..\n *. *. *. ...** * **.*.. ..*.*.* * .* * * . .*..**... * .*. . *** ...* ..\n *. *.* *. ...** * **.*.. ..*.*.* * .* * * . .*..**...* * .*. . *** ...* ..\n *. *.* *. ...** * **.*.. ..*.*.* * .* * * . .*..**...* * .*. . *** ...* ..\n *. *.* *. ...** * **.*..*..*.*.* * ** * * **.*..**...* * .*. . *** ...**..\n *. *.* *.*...** * **.*..*..*.*.* * ** * * **.*..**...* * .*. . *** ..***..\n 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*******.***.*\n**.**.*******.********.**.*..*.*.***************.*..****.****.*.*.********.***.*\n**.**.*******.********.**.*..*.*.***************.*..****.****.*.*.********.***.*\n**.**.*******.********.**.*..*.*.***************.*..****.****.*.*.********.***.*\n**.**.*******.********.**.*..*.*.***************.*..****.****.*.*.********.***.*\n**.**.*******.********.**.*..*.*.***************.*..****.****.*.*.********.***.*\n**.*******************.**.*..*.*.***************.*..****.****.*.*.********.***.*\n**.*******************.**.*..*.*.***************.*..****.****.*.*.********.***.*\n**.*******************.**.*..*.*.***************.*..****.****.*.*.********.***.*\n^C\n16 dirty blocks lost\n```\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fvi%2Foutoforderfs","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fvi%2Foutoforderfs","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fvi%2Foutoforderfs/lists"}