Please help me to understand what am I doing wrong. I'm trying to restore db instance from snapshot. Seems like restoring happens fast but modifying phase gets stuck for hours. As I can see it cannot apply Option Group for new instance - it gets stuck with status Pending-Apply for hours. As I understand it should take only minutes to complete restoring.
Actually it didn't get stuck. It was converting storage type from IOPS to GP2. It's time consuming operation. When I left storage type without changes restoring operation took about 15 minutes.