Host based read cache for san supporting NVMEF with E2E validation

A non-transitory computer-readable medium having a computer program product stored thereon, the computer program product including instructions that, when executed by a computer causes the computer to perform operations comprising:

• providing a shared non-volatile memory express over fabric (NVMeF)/remote direct memory access over converged ethernet (RoCE) space among designated client systems;
• upon a first read operation for data from one of the client systems to a storage array, receiving metadata with a read response from the storage array, the read response including the data from the storage array, the metadata including a location of the data based on a drive number associated with a drive, an offset for the data on the drive, and a signature for the data;
• performing, by the one of the client systems, a second read operation for the data to the storage array, the second read operation using the metadata to perform a direct NVMeF read from the storage array and bypassing a software stack of the storage array;
• and
• upon receiving the data at the one of the client systems, using the signature from the metadata to perform validation on the data;
• wherein each of the client systems in the shared NVMeF/RoCE space is provided with its own copy of the metadata that enables the client systems to perform the second read operation bypassing the software stack.

A system, comprising:

• a memory comprising computer-executable instructions;
• and
• a processor executing the computer-executable instructions, the computer-executable instructions when executed by the processor cause the processor to perform operations comprising:
• providing a shared non-volatile memory express over fabric (NVMeF)/remote direct memory access over converged ethernet (RoCE) space among designated client systems;
• upon a first read operation for data from one of the client systems to a storage array, receiving metadata with a read response from the storage array, the read response including the data from the storage array, the metadata including a location of the data based on a drive number associated with a drive, an offset for the data on the drive, and a signature for the data;
• performing, by the one of the client systems, a second read operation for the data to the storage array, the second read operation using the metadata to perform a direct NVMeF read from the storage array and bypassing a software stack of the storage array;
• and
• upon receiving the data at the one of the client systems, using the signature from the metadata to perform validation on the data;
• wherein each of the client systems in the shared NVMeF/RoCE space is provided with its own copy of the metadata that enables the client systems to perform the second read operation bypassing the software stack.