Deferred reclamation of invalidated entries associated with replication in a log-structured array

An article of manufacture comprising a non-transitory processor-readable storage medium having stored therein program code of one or more software programs, wherein the program code is executable by one or more processors to implement a method comprising:

• obtaining a write operation issued by an application, the write operation comprising first data associated with a logical data device of the application;
• storing the first data in a first entry of a log-structured array implemented on at least one storage device of a storage system;
• invalidating a second entry of the log-structured array based at least in part on the storage of the first data in the first entry, the second entry comprising second data associated with the logical data device that was stored in the second entry prior to obtaining the write operation;
• determining that a first indication in log-structured array metadata associated with the log-structured array indicates that the invalidated second entry comprises data that is awaiting replication to a replication storage system;
• and
• deferring reclamation of the second entry based at least in part on the determination that the first indication in the log-structured array metadata indicates that the invalidated second entry comprises data that is awaiting replication to the replication storage system.

An apparatus comprising:

• a storage system comprising at least one processor coupled to memory, the at least one processor being configured:
• to obtain a write operation issued by an application, the write operation comprising first data associated with a logical data device of the application;
• to store the first data in a first entry of a log-structured array implemented on at least one storage device of a storage system;
• to invalidate a second entry of the log-structured array based at least in part on the storage of the first data in the first entry, the second entry comprising second data associated with the logical data device that was stored in the second entry prior to obtaining the write operation;
• to determine that a first indication in log-structured array metadata associated with the log-structured array indicates that the invalidated second entry comprises data that is awaiting replication to a replication storage system;
• and
• to defer reclamation of the second entry based at least in part on the determination that the first indication in the log-structured array metadata indicates that the invalidated second entry comprises data that is awaiting replication to the replication storage system.