fix storage

POOL-DELETE-MOUNTPOINT-CLEANUP.md

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+# Pool Delete Mountpoint Cleanup
+
+## Issue
+Ketika pool dihapus, mount point directory tidak dihapus dari sistem. Mount point directory tetap ada di `/opt/calypso/data/pool/<pool-name>` meskipun pool sudah di-destroy.
+
+## Root Cause
+Fungsi `DeletePool` tidak melakukan cleanup untuk mount point directory setelah pool di-destroy.
+
+## Solution
+Menambahkan kode untuk menghapus mount point directory setelah pool di-destroy.
+
+## Changes Made
+
+### Updated `backend/internal/storage/zfs.go`
+**File**: `backend/internal/storage/zfs.go` (line 518-562)
+
+Menambahkan cleanup untuk mount point directory setelah pool di-destroy:
+
+**Before:**
+```go
+// Mark disks as unused
+for _, diskPath := range pool.Disks {
+    // ...
+}
+
+// Delete from database
+_, err = s.db.ExecContext(ctx, "DELETE FROM zfs_pools WHERE id = $1", poolID)
+// ...
+```
+
+**After:**
+```go
+// Remove mount point directory (default: /opt/calypso/data/pool/<pool-name>)
+mountPoint := fmt.Sprintf("/opt/calypso/data/pool/%s", pool.Name)
+if err := os.RemoveAll(mountPoint); err != nil {
+    s.logger.Warn("Failed to remove mount point directory", "mountpoint", mountPoint, "error", err)
+    // Don't fail pool deletion if mount point removal fails
+} else {
+    s.logger.Info("Removed mount point directory", "mountpoint", mountPoint)
+}
+
+// Mark disks as unused
+for _, diskPath := range pool.Disks {
+    // ...
+}
+
+// Delete from database
+_, err = s.db.ExecContext(ctx, "DELETE FROM zfs_pools WHERE id = $1", poolID)
+// ...
+```
+
+## Mount Point Location
+Default mount point untuk semua pools adalah:
+```
+/opt/calypso/data/pool/<pool-name>/
+```
+
+## Behavior
+1. Pool di-destroy dari ZFS system
+2. Mount point directory dihapus dengan `os.RemoveAll()`
+3. Disks ditandai sebagai unused di database
+4. Pool dihapus dari database
+
+## Error Handling
+- Jika mount point removal gagal, hanya log warning
+- Pool deletion tetap berhasil meskipun mount point removal gagal
+- Ini memastikan bahwa pool deletion tidak gagal hanya karena mount point cleanup
+
+## Testing
+1. Create pool dengan nama "test-pool"
+2. Verify mount point directory dibuat: `/opt/calypso/data/pool/test-pool/`
+3. Delete pool
+4. Verify mount point directory dihapus: `ls /opt/calypso/data/pool/test-pool` should fail
+
+## Status
+✅ **FIXED** - Mount point directory sekarang dihapus saat pool di-delete
+
+## Date
+2026-01-09