Host device with multi-path layer configured to provide cluster identification information to storage system

A method comprising:

• configuring a multi-path input-output driver of a first host device to communicate with a storage system over a network;
• the multi-path input-output driver:
• selecting input-output operations from a set of input-output queues of the first host device for delivery to the storage system over the network;
• generating a command comprising a cluster identifier of a cluster that includes the first host device and at least a second host device, wherein the cluster identifier is shared by the first host device and at least the second host device, and wherein the cluster identifier uniquely identifies the cluster comprising the first and second host devices from among a plurality of other clusters each comprising a set of other host devices;
• and
• sending the command to the storage system over the network;
• wherein the command is configured for utilization by the storage system to verify that the second host device is part of the same cluster as the first host device;
• and
• wherein the cluster identifier is extracted from the command and utilized by the storage system to prevent one or more host devices that are not part of the cluster from accessing a given one of the storage devices that is being accessed by one or more of the host devices of the cluster.

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 first host device comprising a multi-path input-output driver, the first host device being configured to communicate over a network with a storage system, causes the multi-path input-output driver:

• to select input-output operations from a set of input-output queues of the first host device for delivery to the storage system over the network;
• to generate a command comprising a cluster identifier of a cluster that includes the first host device and at least a second host device, wherein the cluster identifier is shared by the first host device and at least the second host device, and wherein the cluster identifier uniquely identifies the cluster comprising the first and second host devices from among a plurality of other clusters each comprising a set of other host devices;
• and
• to send the command to the storage system over the network;
• wherein the command is configured for utilization by the storage system to verify that the second host device is part of the same cluster as the first host device;
• and
• wherein the cluster identifier is extracted from the command and utilized by the storage system to prevent one or more host devices that are not part of the cluster from accessing a given one of the storage devices that is being accessed by one or more of the host devices of the cluster.