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