Accessing a file system during a file system check
US9146921B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2013 |
| Grant date | Sep 29, 2015 |
| Priority date | — |
| Expiry date | Aug 23, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/02
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An improved technique involves providing read-only access to the file system while FSCK is running. After a storage processor detects corrupted data in the file system, the storage processor brings the file system offline and provides FSCK with read-only access to the file system. The storage processor then begins a repair process on the disk by starting to run FSCK, which writes corrupted blocks to a secondary storage device. Upon receiving a request from a user for access to a file in the file system, the storage processor mounts the file system with read-only access. Upon completion of FSCK, the storage processor brings the file system offline, applies the corrected blocks from secondary storage to the blocks in primary storage, and brings the file system online with full read and write access.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.