Hello Zheng, Monday, October 13, 2014, 10:45:37 AM, you wrote: > Yes, detaching a backing device will make all dirty data to be written > back to the backing device. But if I understand correctly it couldn't > invalidate all data in cache device. That means that after attaching > backing device the data in cache device is still valid. It would be a bug if cached data were considered valid after detaching and re-attaching. Because while a cache device an a backing device were separated, data could be written to a backing device, this would possibly make data in a "disconnected" cache obsolete. Pavel Goran -- To unsubscribe from this list: send the line "unsubscribe linux-bcache" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
