Storage system with submission queue selection utilizing application and submission queue priority

A method comprising:

• obtaining, by a multi-path input-output driver of a host device configured to communicate over a network with a storage system comprising a plurality of storage devices, an input-output operation that targets a given logical volume of the storage system, the host device comprising at least one processing device and a plurality of communication adapters, each communication adapter comprising a plurality of input-output submission queues, each of the input-output submission queues having a submission queue priority class;
• determining, by the multi-path input-output driver, a process tag value associated with the obtained input-output operation;
• determining, by the multi-path input-output driver, a mapping between the determined process tag value and a given submission queue priority class;
• identifying, by the multi-path input-output driver, one or more of the input-output submission queues as having the given submission queue priority class based at least in part on the mapping;
• selecting, by the multi-path input-output driver, a target input-output submission queue from the identified one or more input-output submission queues;
• and
• dispatching, by the multi-path input-output driver, the obtained input-output operation to the selected target input-output submission queue.

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 a host device that is configured to communicate over a network with a storage system comprising a plurality of storage devices, the host device comprising at least one processing device and a plurality of communication adapters, each communication adapter comprising a plurality of input-output submission queues, each of the input-output submission queues having a submission queue priority class, the host device further comprising a multi-path input-output driver configured to deliver input-output operations from the host device to the storage system over the network, causes the multi-path input-output driver:

• to obtain an input-output operation that targets a given logical volume of the storage system;
• to determine a process tag value associated with the obtained input-output operation;
• to determine a mapping between the determined process tag value and a given submission queue priority class;
• to identify one or more of the input-output submission queues as having the given submission queue priority class based at least in part on the mapping;
• to select a target input-output submission queue from the identified one or more input-output submission queues;
• and
• to dispatch the obtained input-output operation to the selected target input-output submission queue.