US 2021/0004162 A1 · MANAGEMENT OF UNMAP PROCESSING RATES IN DISTRIBUTED AND SHARED DATA STORAGE VOLUMES

Abstract

The disclosure herein describes managing a rate of processing unmap requests for a data storage volume. Unmap requests are received from a cluster of active hosts that are associated with the data storage volume. Latency data values of each active host are then accessed. A long-term cluster latency average value is calculated based on the accessed latency data values of all active hosts over a long-term time period and a short-term cluster latency average value is calculated based on the accessed latency data values of all active hosts over a short-term time period. An unmap rate adjustment value is calculated based on a difference between the long-term cluster latency average value and the short-term cluster latency average value. The rate of processing unmap requests for the data storage volume is adjusted based on the unmap rate adjustment value and the unmap requests are performed based on the adjusted rate.

Claims20

Dependent claims

A computerized method for managing a rate of processing unmap requests for a data storage volume, the method comprising:

receiving and buffering, by a processor, unmap requests from a cluster of active hosts that are associated with the data storage volume;
calculating, by the processor, an unmap rate adjustment value based on a cluster latency difference between a first cluster latency average value of the cluster of active hosts based on a first time period and a second cluster latency average value of the cluster of active hosts based on a second time period;
adjusting, by the processor, the rate of processing unmap requests for the data storage volume based on the calculated unmap rate adjustment value;
and
performing, by the processor, the buffered unmap requests based on the adjusted rate of processing unmap requests of the data storage volume.

2 more elements

A computer system comprising:

a processor at a device associated with a data storage volume;
a non-transitory computer readable medium having stored thereon program code for managing a rate of processing unmap requests for the data storage volume, the program code causing the processor to:
receive and buffer unmap requests from a cluster of active hosts that are associated with the data storage volume;
calculate an unmap rate adjustment value based on a cluster latency difference between a first cluster latency average value of the cluster of active hosts based on a first time period and a second cluster latency average value of the cluster of active hosts based on a second time period;
adjust the rate of processing unmap requests for the data storage volume based on the calculated unmap rate adjustment value;
and
perform the buffered unmap requests based on the adjusted rate of processing unmap requests of the data storage volume.

4 more elements

A non-transitory computer readable storage medium having stored thereon program code executable by a computer system associated with a data storage volume, the program code embodying a method comprising:

receiving and buffering, by a processor, unmap requests from a cluster of active hosts that are associated with the data storage volume;
calculating, by the processor, an unmap rate adjustment value based on a cluster latency difference between a first cluster latency average value of the cluster of active hosts based on a first time period and a second cluster latency average value of the cluster of active hosts based on a second time period;
adjusting, by the processor, a rate of processing unmap requests for the data storage volume based on the calculated unmap rate adjustment value;
and
performing, by the processor, the buffered unmap requests based on the adjusted rate of processing unmap requests of the data storage volume.

2 more elements

Dependencies are inferred from the claim text.

Management of unmap processing rates in distributed and shared data storage volumes

Life of this patent

Management of unmap processing rates in distributed and shared data storage volumes

Life of this patent

Abstract

Claims20