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Editorial Team
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Asked: 2026-05-18T12:09:20+00:00

I had a problem with a corrupt repository today. svn log gave me Malformed

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I had a problem with a corrupt repository today.

svn log gave me “Malformed file” errors even though svnadmin verify said everything was OK.

It’s always bad when your source history is gone so I’ll also post an answer in case it helps someone.

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1 Answer

  1. Editorial Team

    Backup your repository!

    • run “svnadmin dump REPOSPATH > nul”

    Note the last revision it was able to dump (eg. 99), the next one has the error (e.g. 100).

    • Open the bad revision props from REPOSPATH\db\revprops.

    If it contains garbage or NULs you can fix it:

    • copy the previous props (99) over the bad one (100)
    • open the corrected props, set the date to a resonable value (don’t edit anything else unless you know the file format)

    run “svnadmin dump REPOSPATH > nul” again – it should finish without errors

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