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tldr/pages/linux/bcachefs.md

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# bcachefs
> Manage `bcachefs` filesystems/devices.
> Some subcommands such as `device` have their own usage documentation.
> More information: <https://bcachefs-docs.readthedocs.io/en/latest/index.html>.
- Format a partition with `bcachefs`:
`sudo bcachefs format {{path/to/partition}}`
- Mount a `bcachefs` filesystem:
`sudo bcachefs mount {{path/to/partition}} {{path/to/mountpoint}}`
- Create a RAID 0 filesystem where an SSD acts as a cache and an HDD acts as a long-term storage:
`sudo bcachefs format --label=ssd.ssd1 {{path/to/ssd/partition}} --label=hdd.hdd1 {{path/to/hdd/partition}} --replicas=1 --foreground_target=ssd --promote_target=ssd --background_target=hdd`
- Mount a multidevice filesystem:
`sudo bcachefs mount {{path/to/partition1}}:{{path/to/partition2}} {{path/to/mountpoint}}`
- Display disk usage:
`bcachefs fs usage --human-readable {{path/to/mountpoint}}`
- Set replicas after formatting and mounting:
`sudo bcachefs set-fs-option --metadata_replicas={{2}} --data_replicas={{2}} {{path/to/partition}}`
- Force `bcachefs` to ensure all files are replicated:
`sudo bcachefs data rereplicate {{path/to/mountpoint}}`
- Display help:
`bcachefs`