Systems and methods for virtual machine live migration

A method for moving a virtual machine (VM) that is running between different nodes, the method comprising:

• receiving an indication of a VM transfer from a host node;
• receiving metadata from the host node, wherein the metadata includes a heat map, a file path to the host node, and an access pattern for the VM;
• determining that the metadata is valid;
• in response to the determining that the metadata is valid, analyzing the heat map and analyzing the access pattern;
• fetching blocks from a cache on the host node utilizing file path,
• wherein the blocks are fetched based on the heat map and the access pattern, and
• wherein a first block with a first hit rate is fetched before a second block with a second hit rate that is higher than the first hit rate based on the access pattern, and
• wherein a third block with a third hit rate that is hot is not fetched based on the access pattern;
• and
• rebuilding at least a portion of the cache with the blocks.

A system for moving a virtual machine (VM) that is running between different nodes, the system comprising:

• at least one processor;
• and
• a memory for storing and encoding computer executable instructions that, when executed by the at least one processor is operative to:
• receive an indication of a VM transfer from a host node;
• receive metadata from the host node, wherein the metadata includes a heat map, a file path to the host node, and an access pattern for the VM;
• determine if the metadata is valid;
• in response to a first determination that the metadata is invalid:
• fetch source files from an original source;
• in response to a second determination that the metadata is valid:
• analyze the heat map and analyze the access pattern,
• fetch cache files from a cache on the host node utilizing the file path,
• wherein a fetching order of the cache files is based on the heat map and the access pattern, and
• wherein a first cache file with a first hit rate will be fetched before a second cache file with a second hit rate that is higher than the first hit rate based on the access pattern;
• and
• rebuild at least a portion of the cache with fetched files.