Managing write operations to an extent of tracks migrated between storage devices

摘要

Provided are a computer program product, system, and method for managing write operations to an extent of tracks migrated between storage device. An operation to migrate an extent of tracks from the second storage to the first storage is processed. A determination is made of the tracks in the extent having a write indicator indicating that the track was updated in the second storage since the previous time. The data for the determined tracks is copied from the second storage to free locations in the first storage. An extent object for the extent is updated to indicate the free locations to which the data for the tracks were copied as an active address for the track.