Virtual block redirection clean-up
US11016884B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 11, 2019 |
| Grant date | May 25, 2021 |
| Priority date | — |
| Expiry date | Jan 5, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/7205
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Virtual block redirection clean-up is accomplished for a virtual block in a mapper tree for a logical volume that is redirected to a destination virtual block in the mapper tree. In response to redirection of the virtual block, a redirection notification is sent to each component in a set of dependent components. Each dependent component may store one or more pointers to pointers located within virtual blocks of the mapper tree. The redirected virtual block is cleaned up in response to determining that each dependent component has expressly indicated, in response to the redirection notification, that it does not store any pointer to any pointer that is located within the redirected virtual block.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.