trapexit
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mkdocs/docs/known_issues_bugs.md
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@ -122,6 +122,11 @@ mergerfs before v2.41.0.) In newer versions of mergerfs and Linux |
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When `mmap` is needed but not available you may see `ENODEV` or `No |
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such device` errors though it will depend on the particular software. |
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Details on enabling `mmap` can be found at: |
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* [QuickStart](quickstart.md#configuration) |
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* [Config > cache.files](config/cache.md#cachefiles) |
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That said it is recommended that config and runtime files be stored on |
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SSDs on a regular filesystem for performance reasons. See [What should |
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mergerfs NOT be used |
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@ -137,6 +142,25 @@ more compatible but could also be more performant in certain |
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situations. |
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### qbittorrent |
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Same `mmap` concerns as mentioned above but called out specifically |
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due to regularity of queries. |
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The default "Disk IO type" setting is "Memory mapped files" which |
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means it requires `mmap` support. |
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If qbittorrent errors when using mergerfs ensure that either "Disk IO |
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type" is set to "POSIX-compliant" or "Simple pread/pwrite"; or setup |
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mergerfs to support `mmap`. |
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References: |
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* [Software using mmap](#software-using-mmap) |
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* [QuickStart](quickstart.md#configuration) |
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* [Config > cache.files](config/cache.md#cachefiles) |
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### rsync |
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This isn't specific to mergerfs but when using `--sparse, -S` option |
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