1. A method comprising: determining, in response to a data request associated with a timestamp, that a logical page associated with the data request and the timestamp is not present in a cache by determining that a blockmap identity associated with the time stamp is not present in the cache; retrieving, by a node, from a shared storage, the blockmap identity and a root page associated with the data request; retrieving, by the node, the logical page associated with the data request by copying a stored logical page from the shared storage to the cache; and indicating a range of valid timestamp values for the logical page with a lower timestamp value and an upper timestamp value, the indicating comprising setting the lower timestamp value of the logical page to a timestamp associated with the stored logical page, and setting the upper timestamp value of the logical page to the timestamp associated with the data request.