Virtual disk replication using log files

Computer-readable media having computer-executable instructions stored thereon, wherein the computer-executable instructions, in response to execution, cause a virtual machine host device to perform operations, the operations comprising:

• queuing write requests of a primary virtual machine into a first queue;
• queuing the write requests issued by the primary virtual machine into a second queue;
• updating a virtual disk utilized by the primary virtual machine according to the queued write requests of the first queue;
• updating a log file according to the queued write requests of the second queue;
• and
• transferring the log file to facilitate generation of a replicated virtual disk of a target virtual machine.

A computing device, comprising:

• a memory and a processor that respectively store and execute instructions, including instructions that implement:
• a virtual machine that generates a plurality of storage access requests targeted to a virtual disk;
• a storage request processing module that receives the plurality of storage access requests and that updates the virtual disk according to the storage access requests;
• a replication management module that also receives the storage access requests and that stores information associated with the storage access requests in at least one log file;
• and
• a transfer module that transfers the at least one log file to a destination as a recovery log for at least a portion of the virtual disk.

A method of migrating a virtual disk from a source server to a destination server comprising:

• queuing write requests of a virtual machine into a first queue while the virtual machine is executing on the source server;
• queuing the write requests issued by the virtual machine into a second queue while the virtual machine is executing on the source server;
• updating the virtual disk according to the queued write requests of the first queue;
• updating a log file according to the queued write requests of the second queue;
• transferring the log file to the destination server;
• and
• replicating the virtual disk on the destination server according to the log file.