Patent ID: 9317217
Filing Date: 2016-04-19
CPC Classification: G06F

Claim Text:
1. A method, comprising: receiving, by one or more computers comprising one or more processors, a request to terminate a first virtual machine instance; identifying, by the one or more computers, one or more storage devices associated with the first virtual machine instance; receiving, by the one or more computers from a virtual block device, a first dirtied block mapping associated with the one or more storage devices; determining, by the one or more computers, dirtied blocks of the one or more storage devices based at least in part on the first dirtied block mapping; wiping, by the one or more computers, the dirtied blocks of the one or more storage devices; receiving, by the one or more computers from a virtual block device, a second dirtied block mapping indicative of the wiped dirtied blocks of the one or more storage device; verifying, by the one or more computers, by comparing the first dirtied block mapping to the second dirtied block mapping, that the one or more storage devices are wiped; and associating, by the one or more computers, the one or more storage devices with a second virtual machine instance.