47 lines
1.3 KiB
Markdown
47 lines
1.3 KiB
Markdown
# Test Case: zstd Compression Level 1
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**Test ID**: TC105-zstd-level1
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**G5 fixture contract**: Use [G5-MANUAL-SETUP.md](G5-MANUAL-SETUP.md).
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Its generated paths, source comparisons, structured corruption offsets, and
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cleanup rules supersede placeholder examples in this file.
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**Category**: Compression
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**Priority**: High
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**Regression**: None
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## Objective
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Verify zstd compressed data path with level 1 (fastest) compression.
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## Preconditions
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- EROFS image created with zstd level 1: `mkfs.erofs -zzstd,level=1 test.img src/`
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- Test files of various sizes
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- FreeBSD 13.0+ with libzstd
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## Test Steps
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1. Create image with zstd level 1 compression
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2. Attach and mount: `unit=$(mdconfig -a -t vnode -f test.img); mount -t erofs -o ro /dev/${unit} /mnt`
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3. Read files and verify content
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4. Test random access patterns
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5. Measure throughput
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## Expected Results
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- All files decompress correctly
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- Fast decompression speed
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- Good compression ratio even at level 1
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- Random access works correctly
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## Verification Method
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- SHA256 checksums match originals
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- Decompression throughput > 200 MB/s
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- No zstd decompression errors
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- Random reads succeed
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## Cleanup
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```sh
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umount /mnt
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mdconfig -d -u "${unit}"
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```
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## Notes
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Tests feature 59: zstd compressed data path with fast compression.
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