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markbase/docs/RAID_MODULE_PROGRESS.md
2026-05-18 17:02:30 +08:00

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# RAID Module Development Progress
## Date: 2026-05-17
## Status: Phase 1 (30% Complete)
## Completed
### Core Module Structure
-`src/raid/mod.rs` - Core interface and enums
-`src/raid/controller.rs` - RAID controller and array management
-`src/raid/level_0.rs` - RAID 0 Stripe algorithm
-`src/raid/level_1.rs` - RAID 1 Mirror algorithm
-`src/raid/level_5.rs` - RAID 5 placeholder (stub)
### Implemented Features
- ✅ RaidLevel enum (0/1/5/6/10/50/60)
- ✅ MemberStatus enum (Online/Offline/Rebuilding/Failed)
- ✅ RaidAlgorithm trait (read/write interface)
- ✅ RaidController (create_array/read/write)
- ✅ RAID 0 Stripe: locate_block algorithm
- ✅ RAID 1 Mirror: read from first member, write to all
### Test Infrastructure
- ✅ Test program: `src/bin/raid_test.rs`
- ✅ Test disks: 3 × 5GB sparseimage
- ✅ Compilation successful
## Pending
### Week 2: RAID 5/6
- ❌ XOR Parity calculation (parity.rs)
- ❌ RAID 5 rotating parity position
- ❌ RAID 5 reconstruction
- ❌ Reed-Solomon library (RAID 6)
- ❌ RAID 6 double parity
### Week 3: Nested RAID
- ❌ RAID 10 (Mirror + Stripe)
- ❌ RAID 50 (RAID 5 + Stripe)
- ❌ RAID 60 (RAID 6 + Stripe)
### Week 4: Integration
- ❌ WebDAV handler integration
- ❌ Single RAID device export
- ❌ Performance testing (AJA)
- ❌ Fault simulation
## Architecture
```
RaidController
├── RaidArray {level, members, stripe_size}
└── RaidAlgorithm trait
├── Raid0.read/write (Stripe)
├── Raid1.read/write (Mirror)
├── Raid5.read/write (Parity)
├── Raid6.read/write (Double Parity)
└── Nested RAID implementations
```
## Performance Target
- RAID 0: >=600 MB/s (3盘叠加)
- RAID 5: >=500 MB/s (校验开销)
- RAID 6: >=400 MB/s (双校验开销)
## Next Steps
1. Implement parity.rs (XOR calculation)
2. Complete RAID 5 read/write logic
3. Add Reed-Solomon library for RAID 6
4. Test fault recovery