Lease-based leader designation for multiple processes accessing storage resources of a storage system

A method comprising:

• providing multiple processes with access to storage resources;
• designating a given one of the processes as a leader relative to the other ones of the processes so as to provide the given process with prioritized access to perform processing operations involving at least one of the storage resources, the designating of the given process as the leader being independent of interaction between the processes;
• in conjunction with designating of the given one of the processes as the leader, permitting the given process to obtain a lease on the leader designation for a period of time that is determined based at least in part on a specified time-to-live value;
• receiving a lease update request from the given process;
• granting the lease update request if the given process is currently designated as the leader;
• and
• setting an expiration time for the lease as a function of at least the time-to-live value;
• wherein designating a given one of the processes as a leader relative to the other ones of the processes comprises:
• receiving a request from a given one of the processes to make that process the leader;
• determining if another one of the processes is currently designated as the leader;
• if another one of the processes is currently designated as the leader, returning to the given process an identifier of the other one of the processes that is currently designated as the leader;
• and
• if another one of the processes is not currently designated as the leader, designating the given process as the leader and returning to the given process its own identifier as an identifier of the process that is currently designated as the leader;
• and
• wherein the method is performed by at least one processing device comprising a processor coupled to a memory.

A computer program product comprising a non-transitory processor-readable storage medium having stored therein program code of one or more software programs, wherein the program code when executed by at least one processing device causes said at least one processing device:

• to provide multiple processes with access to storage resources;
• to designate a given one of the processes as a leader relative to the other ones of the processes so as to provide the given process with prioritized access to perform processing operations involving at least one of the storage resources, wherein the given one of the processes is designated as the leader is independent of interaction between the processes;
• in conjunction with designating of the given one of the processes as the leader, to permit the given process to obtain a lease on the leader designation for a period of time that is determined based at least in part on a specified time-to-live value;
• to receive a lease update request from the given process;
• to grant the lease update request if the given process is currently designated as the leader;
• and
• to set an expiration time for the lease as a function of at least the time-to-live value;
• wherein designating a given one of the processes as a leader relative to the other ones of the processes comprises:
• receiving a request from a given one of the processes to make that process the leader;
• determining if another one of the processes is currently designated as the leader;
• if another one of the processes is currently designated as the leader, returning to the given process an identifier of the other one of the processes that is currently designated as the leader;
• and
• if another one of the processes is not currently designated as the leader, designating the given process as the leader and returning to the given process its own identifier as an identifier of the process that is currently designated as the leader.