Tracking modifications to a virtual machine image that occur during backup of the virtual machine
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 30, 2018
Issued Date -
N/A
app pub date -
Jul 2, 2014
filing date -
Jul 11, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A computer system comprises a processor unit arranged to run a hypervisor running one or more virtual machines; a cache connected to the processor unit and comprising a plurality of cache rows, each cache row comprising a memory address, a cache line and an image modification flag; and a memory connected to the cache and arranged to store an image of at least one virtual machine. The processor unit is arranged to define a log in the memory and the cache further comprises a cache controller arranged to set the image modification flag for a cache line modified by a virtual machine being backed up, but not for a cache line modified by the hypervisor operating in privilege mode; periodically check the image modification flags; and write only the memory address of the flagged cache rows in the defined log.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2014 Application Filing Year
- G06F Class
- 51669 Applications Filed
- 44228 Patents Issued To-Date
- 85.60 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 6 Citation Count
- G06F Class
- 20.77 % this patent is cited more than
- 7 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jul 30, 2025 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jul 30, 2029 |
