8000 [FEATURE] mfschunktool: option to delete corrupted files · Issue #632 · moosefs/moosefs · GitHub
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[FEATURE] mfschunktool: option to delete corrupted files #632

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onlyjob opened this issue Jan 20, 2025 · 3 comments
Open

[FEATURE] mfschunktool: option to delete corrupted files #632

onlyjob opened this issue Jan 20, 2025 · 3 comments
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feature Idea of a new feature to make MooseFS even better! :) needs feedback
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@onlyjob
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onlyjob commented Jan 20, 2025

Please consider enhancing mfschunktool by adding command line option to delete corrupted files. Thanks.
@chogata
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chogata commented Feb 5, 2025

It's doable, no problem, but sounds like a dangerous option (easy to mistakenly use the wrong switch and delete instead of repair).

Maybe this option could move corrupted chunk files to a special directory (named "damaged" for example)? Then you can delete the whole directory at the end if you so desire. And if you used that option by mistake, the chunks are not gone, it's enough to put them back in any chunk directory(ies).

@chogata chogata added feature Idea of a new feature to make MooseFS even better! :) needs feedback labels Feb 5, 2025
@onlyjob
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onlyjob commented Feb 21, 2025

IMHO removing corrupted chunks is safe, if they are truly corrupted. (See #641 for bug-report of issue when mfschunktool incorrectly report valid chunks of size 8192 as corrupted in fast mode.)

With #641 unfixed, removing not-really-corrupted chunks would be incredibly dangerous. But normally it should be safe, and it would be even safer to move corrupted chunks aside.

@chogata
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chogata commented Feb 21, 2025

We have implemented the option to move corrupted chunks to a specified directory when using mfschunktool.

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