Techniques for maintaining data consistency during disaster recovery

A non-transitory computer-readable medium storing computer-executable instructions that, when executed by one or more processors of a computing system, cause the one or more processors to perform operations comprising:

• receiving, by the computing system, a request for a file system replication between a source file system and a target file system, the source file system and the target file system being in different regions;
• processing, by the computing system, a plurality of binary tree (B-tree) key-value pairs that are different between two snapshots of a source file system;
• assigning, by the computing system, a first identifier to a first group of key-value pairs of the plurality of B-tree key-value pairs;
• and
• assigning, by the computing system, a second identifier to a second group of key-value pairs of the plurality of B-tree key-value pairs upon detecting a failure event during the file system replication.

A system, comprising:

• one or more processors;
• and
• one or more computer readable media storing computer-executable instructions that, when executed by the one or more processors, cause the system to:
• receive a request for a file system replication between a source file system and a target file system, the source file system and the target file system being in different regions;
• process a plurality of binary tree (B-tree) key-value pairs that are different between two snapshots of a source file system;
• assign a first identifier to a first group of key-value pairs of the plurality of B-tree key-value pairs;
• and
• assign a second identifier to a second group of key-value pairs of the plurality of B-tree key-value pairs upon detecting a failure event during the file system replication.