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| Developer(s) | Bell Labs |
|---|---|
| Introduced | 2002 |
| Preceded by | Kfs |
| Features | |
| Transparent compression | Yes |
| Transparent encryption | No |
| Data deduplication | Yes |
| Other | |
| Supported operating systems | Plan 9 from Bell Labs |
Fossil is the default file system in Plan 9 from Bell Labs. It serves the network protocol 9P and runs as a user space daemon, like most Plan 9 file servers. Fossil is different from most other file systems due to its snapshot/archival feature. It can take snapshots of the entire file system on command or automatically (at a user-set interval). These snapshots can be kept on the Fossil partition as long as disk space allows; if the partition fills up then old snapshots will be removed to free up disk space. A snapshot can also be saved permanently to Venti. Fossil and Venti are typically installed together.[1]
- ^ "Fossil, an Archival File Server". cat-v.org Documentation archive.