mirror of
https://github.com/eledio-devices/thirdparty-littlefs.git
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fd1da602d7
This provides a limited form of wear leveling. While wear is not actually balanced across blocks, the filesystem can recover from corrupted blocks and extend the lifetime of a device nearly as much as dynamic wear leveling. For use-cases where wear is important, it would be better to use a full form of dynamic wear-leveling at the block level. (or consider a logging filesystem). Corrupted block handling was simply added on top of the existing logic in place for the filesystem, so it's a bit more noodly than it may have to be, but it gets the work done.
50 lines
943 B
Bash
Executable File
50 lines
943 B
Bash
Executable File
#!/bin/bash
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set -eu
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echo "=== Formatting tests ==="
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rm -rf blocks
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echo "--- Basic formatting ---"
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tests/test.py << TEST
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lfs_format(&lfs, &cfg) => 0;
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TEST
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echo "--- Invalid superblocks ---"
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ln -f -s /dev/zero blocks/0
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ln -f -s /dev/zero blocks/1
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tests/test.py << TEST
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lfs_format(&lfs, &cfg) => LFS_ERR_CORRUPT;
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TEST
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rm blocks/0 blocks/1
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echo "--- Basic mounting ---"
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tests/test.py << TEST
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lfs_format(&lfs, &cfg) => 0;
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TEST
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tests/test.py << TEST
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lfs_mount(&lfs, &cfg) => 0;
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lfs_unmount(&lfs) => 0;
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TEST
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echo "--- Invalid mount ---"
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tests/test.py << TEST
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lfs_format(&lfs, &cfg) => 0;
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TEST
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rm blocks/0 blocks/1
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tests/test.py << TEST
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lfs_mount(&lfs, &cfg) => LFS_ERR_CORRUPT;
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TEST
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echo "--- Valid corrupt mount ---"
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tests/test.py << TEST
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lfs_format(&lfs, &cfg) => 0;
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TEST
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rm blocks/0
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tests/test.py << TEST
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lfs_mount(&lfs, &cfg) => 0;
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lfs_unmount(&lfs) => 0;
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TEST
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echo "--- Results ---"
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tests/stats.py
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