Methods and apparatus for managing asynchronous dependent I/O for a virtual fibre channel target
US8489940B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 16, 2010 |
| Grant date | Jul 16, 2013 |
| Priority date | — |
| Expiry date | Aug 23, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0689
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus for managing exchange IDs for multiple asynchronous dependent I/O operations generated for virtual Fibre Channel (FC) target volumes. Features and aspects hereof allocate a range of exchange identifier (X_ID) values used in issuing a plurality of physical I/O operations to a plurality of physical FC target devices that comprise the virtual FC target volume. The plurality of physical I/O operations are dependent upon one another for completion of the original request to the virtual FC target volume and allow substantially parallel operation of the plurality of physical FC target devices. A primary X_ID is selected from the range of allocated X_ID values for communications with the attached host system that generated the original request to the virtual FC target volume.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.