Storage system with distributed input-output sequencing

A method comprising:

• configuring a storage system to comprise a plurality of storage nodes each associated with one or more storage devices;
• providing at least one virtual volume distributed over the storage nodes for utilization by a plurality of host devices;
• and
• implementing in the storage nodes respective input-output sequencers for handling input-output operations directed to the distributed virtual volume by the host devices;
• wherein the input-output sequencers of the respective storage nodes are configured to interact with one another to collectively form a distributed input-output sequencer that ensures consistency across the storage nodes for the distributed virtual volume when accessed by different ones of the host devices;
• and
• wherein a particular one of the input-output sequencers is designated as volume owner of the distributed virtual volume for a given period of time and one or more other ones of the input-output sequencers request access to specified regions of the distributed virtual volume from the designated volume owner during that period of time.

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 storage system comprising a plurality of storage nodes each associated with one or more storage devices causes the storage system:

• to provide at least one virtual volume distributed over the storage nodes for utilization by a plurality of host devices;
• and
• to implement in the storage nodes respective input-output sequencers for handling input-output operations directed to the distributed virtual volume by the host devices;
• wherein the input-output sequencers of the respective storage nodes are configured to interact with one another to collectively form a distributed input-output sequencer that ensures consistency across the storage nodes for the distributed virtual volume when accessed by different ones of the host devices;
• and
• wherein a particular one of the input-output sequencers is designated as volume owner of the distributed virtual volume for a given period of time and one or more other ones of the input-output sequencers request access to specified regions of the distributed virtual volume from the designated volume owner during that period of time.