fix storage

ZFS-MOUNTPOINT-FIX.md

@@ -0,0 +1,59 @@
+# ZFS Pool Mountpoint Fix
+
+## Issue
+ZFS pool creation was failing with error:
+```
+cannot mount '/default': failed to create mountpoint: Read-only file system
+```
+
+The issue was that ZFS was trying to mount pools to the root filesystem (`/default`), which is read-only.
+
+## Solution
+Updated the ZFS pool creation code to set a default mountpoint to `/opt/calypso/data/pool/<pool-name>` for all pools.
+
+## Changes Made
+
+### 1. Updated `backend/internal/storage/zfs.go`
+- Added mountpoint configuration during pool creation using `-m` flag
+- Set default mountpoint to `/opt/calypso/data/pool/<pool-name>`
+- Added code to create the mountpoint directory before pool creation
+- Added logging for mountpoint creation
+
+**Key Changes:**
+```go
+// Set default mountpoint to /opt/calypso/data/pool/<pool-name>
+mountPoint := fmt.Sprintf("/opt/calypso/data/pool/%s", name)
+args = append(args, "-m", mountPoint)
+
+// Create mountpoint directory if it doesn't exist
+if err := os.MkdirAll(mountPoint, 0755); err != nil {
+    return nil, fmt.Errorf("failed to create mountpoint directory %s: %w", mountPoint, err)
+}
+```
+
+### 2. Directory Setup
+- Created `/opt/calypso/data/pool` directory
+- Set ownership to `calypso:calypso`
+- Set permissions to `0755`
+
+## Default Mountpoint Structure
+All ZFS pools will now be mounted under:
+```
+/opt/calypso/data/pool/
+├── pool-name-1/
+├── pool-name-2/
+└── ...
+```
+
+## Testing
+1. Backend rebuilt successfully
+2. Service restarted successfully
+3. Ready to test pool creation from frontend
+
+## Next Steps
+- Test pool creation from the frontend UI
+- Verify that pools are mounted correctly at `/opt/calypso/data/pool/<pool-name>`
+- Ensure proper permissions for pool mountpoints
+
+## Date
+2026-01-09