Controlling a storage system

摘要

A method, computer-readable storage medium and computer system for controlling a storage system, the storage system comprising a plurality of logical storage volumes, the method comprising: monitoring, for each of the logical storage volumes, one or more load parameters; receiving, for each of the logical storage volumes, one or more load parameter threshold values; comparing, for each of the logical storage volumes, the first load parameter values of said logical storage volume with the corresponding one or more load parameter threshold values; in case at least one of the first load parameter values of one of the logical storage volumes violates the load parameter threshold value it is compared with, automatically executing a corrective action.

主权项

1. A computer system comprising:
a storage system comprising a plurality of logical storage volumes that provide storage space on one or more of said logical storage volumes to one or more clients; a server system comprising a monitoring and control unit coupled to the storage system and the one or more clients via a network and being adapted for:
monitoring, for each of the logical storage volumes, one or more load parameters being indicative of a current I/O load of said logical storage volume for obtaining first load parameter values;receiving, for each of the logical storage volumes, one or more load parameter threshold values;comparing, for each of the logical storage volumes, the monitored first parameter values with the corresponding one or more load parameter threshold values received for said logical storage volume; andin case at least one of the first load parameter values of one of the logical storage volumes violates the load parameter threshold value it is compared with, automatically executing a corrective action while avoiding a full volume migration, wherein the corrective action comprises at least two of:modifying a ratio of high-performing physical storage volumes and low-performing physical storage volumes constituting said one logical storage volume;disabling or enabling a data compression functionality of said logical storage volume, the data compression functionality automatically compressing any data stored to said one logical storage volume;modifying a physical-to-logical mapping of storage blocks of one or more physical storage volumes constituting said logical storage volumes, thereby increasing the number of physical storage volumes constituting said logical storage volume by adding additional physical storage volumes to the mapping or decreasing the number of physical storage volumes constituting said logical storage volume by removing one or more of said mapped physical storage volumes from said mapping;modifying a size of a cache memory associated with said one logical storage volume; andmodifying a grouping, said grouping assigning each of a plurality of controller nodes a disjunct group of the physical storage volumes to be controlled by said controller node, the modification increasing or decreasing the number of physical storage volumes controlled by one of said controller nodes, said one controller node currently controlling at least one of the physical storage volumes mapped to memory blocks of said one logical storage volume.