Organize documentation: move all markdown files to docs/ directory
- Created docs/ directory for better organization - Moved 35 markdown files from root to docs/ - Includes all status reports, guides, and testing documentation Co-Authored-By: Warp <agent@warp.dev>
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Warp Agent
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docs/PHASE-C-PROGRESS.md
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docs/PHASE-C-PROGRESS.md
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# Phase C: Backend Core Domains - Progress Report
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## Status: In Progress (Core Components Complete)
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### ✅ Completed Components
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#### 1. Database Schema (Migration 002)
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- **File**: `backend/internal/common/database/migrations/002_storage_and_tape_schema.sql`
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- **Tables Created**:
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- `disk_repositories` - Disk-based backup repositories
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- `physical_disks` - Physical disk inventory
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- `volume_groups` - LVM volume groups
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- `scst_targets` - SCST iSCSI targets
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- `scst_luns` - LUN mappings
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- `scst_initiator_groups` - Initiator groups
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- `scst_initiators` - iSCSI initiators
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- `physical_tape_libraries` - Physical tape library metadata
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- `physical_tape_drives` - Physical tape drives
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- `physical_tape_slots` - Tape slot inventory
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- `virtual_tape_libraries` - Virtual tape library metadata
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- `virtual_tape_drives` - Virtual tape drives
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- `virtual_tapes` - Virtual tape inventory
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#### 2. Storage Component ✅
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- **Location**: `backend/internal/storage/`
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- **Features**:
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- **Disk Discovery** (`disk.go`):
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- Physical disk detection via `lsblk`
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- Disk information via `udevadm`
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- Health status detection
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- Database synchronization
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- **LVM Management** (`lvm.go`):
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- Volume group listing
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- Repository creation (logical volumes)
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- XFS filesystem creation
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- Repository listing and retrieval
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- Usage monitoring
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- Repository deletion
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- **API Handler** (`handler.go`):
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- `GET /api/v1/storage/disks` - List physical disks
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- `POST /api/v1/storage/disks/sync` - Sync disks to database (async)
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- `GET /api/v1/storage/volume-groups` - List volume groups
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- `GET /api/v1/storage/repositories` - List repositories
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- `GET /api/v1/storage/repositories/:id` - Get repository
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- `POST /api/v1/storage/repositories` - Create repository
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- `DELETE /api/v1/storage/repositories/:id` - Delete repository
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#### 3. SCST Integration ✅
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- **Location**: `backend/internal/scst/`
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- **Features**:
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- **SCST Service** (`service.go`):
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- Target creation and management
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- LUN mapping (device to LUN)
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- Initiator ACL management
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- Single initiator enforcement for tape targets
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- Handler detection
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- Configuration persistence
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- **API Handler** (`handler.go`):
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- `GET /api/v1/scst/targets` - List all targets
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- `GET /api/v1/scst/targets/:id` - Get target with LUNs
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- `POST /api/v1/scst/targets` - Create new target
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- `POST /api/v1/scst/targets/:id/luns` - Add LUN to target
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- `POST /api/v1/scst/targets/:id/initiators` - Add initiator
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- `POST /api/v1/scst/config/apply` - Apply SCST configuration (async)
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- `GET /api/v1/scst/handlers` - List available handlers
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#### 4. System Management ✅
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- **Location**: `backend/internal/system/`
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- **Features**:
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- **System Service** (`service.go`):
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- Systemd service status retrieval
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- Service restart
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- Journald log retrieval
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- Support bundle generation
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- **API Handler** (`handler.go`):
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- `GET /api/v1/system/services` - List all services
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- `GET /api/v1/system/services/:name` - Get service status
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- `POST /api/v1/system/services/:name/restart` - Restart service
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- `GET /api/v1/system/services/:name/logs` - Get service logs
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- `POST /api/v1/system/support-bundle` - Generate support bundle (async)
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### 🔄 In Progress / Pending
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#### 5. Physical Tape Bridge (Pending)
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- **Requirements** (SRS-02):
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- Tape library discovery (changer + drives)
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- Slot inventory and barcode handling
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- Load/unload operations
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- iSCSI export via SCST
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- **Status**: Database schema ready, implementation pending
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#### 6. Virtual Tape Library (Pending)
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- **Requirements** (SRS-02):
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- MHVTL integration
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- Virtual tape management
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- Tape image storage
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- iSCSI export via SCST
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- **Status**: Database schema ready, implementation pending
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#### 7. Enhanced Monitoring (Pending)
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- **Requirements** (SRS-05):
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- Enhanced health checks
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- Alerting engine
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- Metrics collection
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- **Status**: Basic health check exists, alerting engine pending
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### API Endpoints Summary
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#### Storage Endpoints
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```
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GET /api/v1/storage/disks
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POST /api/v1/storage/disks/sync
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GET /api/v1/storage/volume-groups
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GET /api/v1/storage/repositories
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GET /api/v1/storage/repositories/:id
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POST /api/v1/storage/repositories
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DELETE /api/v1/storage/repositories/:id
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```
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#### SCST Endpoints
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```
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GET /api/v1/scst/targets
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GET /api/v1/scst/targets/:id
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POST /api/v1/scst/targets
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POST /api/v1/scst/targets/:id/luns
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POST /api/v1/scst/targets/:id/initiators
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POST /api/v1/scst/config/apply
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GET /api/v1/scst/handlers
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```
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#### System Management Endpoints
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```
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GET /api/v1/system/services
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GET /api/v1/system/services/:name
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POST /api/v1/system/services/:name/restart
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GET /api/v1/system/services/:name/logs
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POST /api/v1/system/support-bundle
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```
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### Architecture Highlights
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1. **Clean Separation**: Each domain has its own service and handler
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2. **Async Operations**: Long-running operations use task engine
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3. **SCST Integration**: Direct SCST command execution with database persistence
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4. **Error Handling**: Comprehensive error handling with rollback support
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5. **Audit Logging**: All mutating operations are audited (via middleware)
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### Next Steps
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1. **Physical Tape Bridge Implementation**:
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- Implement `tape_physical/service.go` for discovery and operations
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- Implement `tape_physical/handler.go` for API endpoints
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- Add tape endpoints to router
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2. **Virtual Tape Library Implementation**:
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- Implement `tape_vtl/service.go` for MHVTL integration
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- Implement `tape_vtl/handler.go` for API endpoints
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- Add VTL endpoints to router
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3. **Enhanced Monitoring**:
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- Implement alerting engine
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- Add metrics collection
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- Enhance health checks
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### Testing Recommendations
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1. **Unit Tests**: Test each service independently
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2. **Integration Tests**: Test SCST operations with mock commands
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3. **E2E Tests**: Test full workflows (create repo → export via SCST)
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### Known Limitations
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1. **SCST Commands**: Currently uses direct `scstadmin` commands - may need abstraction for different SCST builds
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2. **Error Recovery**: Some operations may need better rollback mechanisms
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3. **Concurrency**: Need to ensure thread-safety for SCST operations
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4. **Validation**: Additional input validation needed for some endpoints
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---
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**Last Updated**: Phase C - Core Components Complete
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**Next Milestone**: Physical and Virtual Tape Library Implementation
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