Policy-driven storage in a microserver computing environment

A non-transitory tangible computer readable media that includes instructions for execution, which when executed by a processor, performs operations comprising:

• allocating tokens to command descriptors associated with I/O operations for accessing a shared storage resource;
• identifying a violation of any policy context of any compute nodes in a microserver chassis based on availability of the tokens, comprising:
• sampling flow table entries in the I/O adapter to measure a number of input/output operations per second (IOPS) for the shared storage resource from the I/O adapter;
• determining from the sampling based on the number of TOPS for the shared storage resource whether any Small Computer System Interface network interface card (sNICs) associated with respective compute nodes are marked as starved;
• and
• identifying as a violation any sNIC marked as starved for unavailability of the token.

An apparatus including a microserver chassis including a plurality of compute nodes;

• a shared storage resource;
• an I/O adapter facilitating access by the compute nodes to the shared storage resource over a shared transmission medium;
• and at least one processor, wherein the processor executes instructions, the apparatus being programmed to perform operations comprising:
• allocating tokens to command descriptors associated with I/O operations for accessing the shared storage resource;
• identifying a violation of any policy context of any of the compute nodes based on availability of the tokens, comprising:
• sampling flow table entries in the I/O adapter to measure a number of input/output operations per second (IOPS) for the shared storage resource from the I/O adapter;
• determining from the sampling determining from the sampling based on the number of TOPS for the shared storage resource whether any Small Computer System Interface network interface card (sNICs) associated with respective compute nodes are marked as starved;
• and
• identifying as a violation any sNIC marked as starved for unavailability of the token.