zones: introduce Zones.CephFSID and Zones.GetCephFSID()

the accessor doesn't generate one if needed yet

Signed-off-by: Alejandro Mery <amery@jpi.io>

pkg/zones/ceph.go

@@ -0,0 +1,15 @@
+package zones
+
+import (
+	"darvaza.org/core"
+	"github.com/gofrs/uuid/v5"
+)
+
+// GetCephFSID returns our Ceph's FSID
+func (m *Zones) GetCephFSID() (uuid.UUID, error) {
+	if core.IsZero(m.CephFSID) {
+		// TODO: generate one
+		return uuid.Nil, nil
+	}
+	return m.CephFSID, nil
+}