2025-04-25 14:33:10 -05:00
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# kernel-permissions-check
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* `kernel-permissions-check=true|false`
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* Default: `true`
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[FUSE](https://www.kernel.org/doc./html/next/filesystems/fuse.html)
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has a feature which mergerfs leverages which allows the kernel to do
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file permission checking rather than leaving it to the FUSE server (in
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this case mergerfs.) This improves performance. However, it also
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limits flexibility.
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mergerfs should work fine regardless of this setting but there might
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be some currently unknown edge cases where disabling the feature might
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help. Like [export-support](export-support.md) this is mostly for
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debugging.
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This option is a kernel mount option so unable to be changed at
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2025-09-18 01:07:28 -04:00
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runtime. It controls the `default_permissions` FUSE kernel option.
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