Method and system for VM-granular I/O caching
US9336035B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 23, 2012 |
| Grant date | May 10, 2016 |
| Priority date | — |
| Expiry date | Dec 8, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/7207
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods are presented for caching I/O data in a solid state drive (SSD) locally attached to a host computer supporting the running of a virtual machine (VM). Portions of the SSD are allocated as cache storage for VMs running on the host computer. A mapping relationship is maintained between unique identifiers for VMs running on the host computer and one or more process identifiers (PIDs) associated with processes running in the host computer that correspond to each of the VM's execution on the host computer. When an I/O request is received, a PID associated with I/O request is determined and a unique identifier for the VM is extracted from the mapping relationship based on the determined PID. A portion of the SSD corresponding to the unique identifier of the VM that is used as a cache for the VM can then be accessed in order to handle the I/O request.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.