Cache migration management in a virtualized distributed computing system

A system for use with a storage and plurality of hosts, each host having a cache and a cache client adapted to manage populating the cache of the host, comprising:

• a storage controller adapted to access and control said storage in response to input/output requests from a source host of said plurality of hosts, said storage controller having a cache server adapted to cooperate with a source cache client of each source host to manage the populating of a source cache of the associated source host;
• a plurality of paths coupling the hosts to the storage controller;
• and
• at least one non-transitory computer readable storage medium having computer readable program code embodied therein that is enabled to cause operations to be performed, the operations comprising:
• detecting by the storage controller, an operation by a host relating to migration of I/O operations from a source host;
• and
• transmitting by the cache server of the storage controller, to a target cache client of a target host, a cache map of the source cache of the source host wherein the cache map identifies locations of the portion of the storage cached in the source cache for populating by the cache client of the target host, the target cache of the target host with data from the locations of the portion of the storage, as identified by the cache map transmitted by the cache server.

A computer program product for managing input/output operations in connection with a plurality of hosts, each host having a cache and a cache client adapted to manage populating the cache of the host, storage, a storage controller adapted to access and control said storage in response to input/output requests from a source host of said plurality of hosts, said storage controller having a cache server adapted to cooperate with a source cache client of each source host to manage the populating of a source cache of the associated source host, and a plurality of paths coupling the hosts to the storage controller;

• the computer program product comprising a non-transitory computer readable storage medium having computer readable program code embodied therein that is enabled to cause operations to be performed, the operations comprising:
• detecting by the storage controller, an operation by a host relating to migration of I/O operations from a source host;
• and
• transmitting by the cache server of the storage controller, to a target cache client of a target host, a cache map of the source cache of the source host wherein the cache map identifies locations of the portion of the storage cached in the source cache for populating by the cache client of the target host, the target cache of the target host with data from the locations of the portion of the storage, as identified by the cache map transmitted by the cache server.