Bug 2265147: Fix PV validation

controllers/util/misc.go

@@ -115,3 +115,8 @@ func UpdateStringMap(dst *map[string]string, src map[string]string) {
 		(*dst)[key] = val
 	}
 }
+
+// OptionalEqual returns True if optional field values are equal, or one of them is unset.
+func OptionalEqual(a, b string) bool {
+	return a == "" || b == "" || a == b
+}

controllers/vrg_volrep.go

@@ -2162,7 +2162,7 @@ func (v *VRGInstance) pvMatches(x, y *corev1.PersistentVolume) bool {
 			"y", y.Spec.PersistentVolumeSource.CSI.FSType)
 
 		return false
-	case x.Spec.ClaimRef.Kind != y.Spec.ClaimRef.Kind:
+	case !rmnutil.OptionalEqual(x.Spec.ClaimRef.Kind, y.Spec.ClaimRef.Kind):
 		v.log.Info("PVs ClaimRef.Kind mismatch", "x", x.Spec.ClaimRef.Kind, "y", y.Spec.ClaimRef.Kind)
 
 		return false

docs/devel-quick-start.md

@@ -72,6 +72,22 @@ enough resources:
    link `venv` for activating the environment. To activate the
    environment use:
 
+1. Install Go 1.20
+
+   Ramen requires now Go 1.20 due to backward incompatible changes in Go
+   1.21 and later. If your system Go is newer and you don't want to
+   downgrade it, you can install Go 1.20 according to
+   [Managing Go installations](https://go.dev/doc/manage-install).
+
+   To use Go 1.20 from the ~/sdk, change the PATH in the shell used to
+   build ramen:
+
+   ```
+   $ export PATH="/home/username/sdk/go1.20.14/bin:$PATH"
+   $ go version
+   go version go1.20.14 linux/amd64
+   ```
+
 That's all! You are ready to submit your first pull request!
 
 ## Running the tests