Point-in-time data copy in a distributed system

A computer program product, the computer program product comprising a non-transitory tangible storage device having program code embodied therewith, the program code executable by a processor of a computer to perform a method, the method comprising:

• verifying, by a controller component, a state of all file sets;
• based on receiving an indicator of successful verifying to the controller component, the controller component initiating a sub-controller component;
• suspending, by the sub-controller component, write operations to all databases at a primary site computer;
• based on the suspending completing without error, the sub-controller executing peer snapshot processes for each of the databases and for application non-database files at the primary site computer, and wherein applications using the databases and non-database files are not suspended;
• based on all of the point-in-time copy processes completing without error, automatically queuing each of the peer snapshots for transmission to a secondary site;
• and
• the sub-controller component resuming write operations to all databases at the primary site computer.

A computer system, comprising:

• one or more processors;
• a memory coupled to at least one of the processors;
• a set of computer program instructions stored in the memory and executed by at least one of the processors in order to perform actions of:
• verifying, by a controller component, a state of all file sets;
• based on receiving an indicator of successful verifying to the controller component, the controller component initiating a sub-controller component;
• suspending, by the sub-controller component, write operations to all databases at a primary site computer;
• based on the suspending completing without error, the sub-controller executing peer snapshot processes for each of the databases and for application non-database files at the primary site computer, and wherein applications using the databases and non-database files are not suspended;
• based on all of the peer snapshot processes completing without error, automatically queuing each of the peer snapshots for transmission to a secondary site;
• and
• based on all of the point-in-time copy processes completing without error, the sub-controller component resuming write operations to all databases at the primary site computer.