bcachefs

linux

Manage `bcachefs` filesystems/devices. Some subcommands such as `device` have their own usage documentation.

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Subcommands (1)

bcachefs device

Manage devices within a running `bcachefs` filesystem.

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Options (2)

-l, --labelboolean

Create a RAID 0 filesystem where an SSD acts as a cache and an HDD acts as a long-term storage

Example:

sudo bcachefs format {{[-l|--label]}} {{ssd.ssd1}} {{path/to/ssd_partition}} {{[-l|--label]}} {{hdd.hdd1}} {{path/to/hdd_partition}} --replicas 1 --foreground_target {{ssd}} --promote_target {{ssd}} --background_target {{hdd}}

-h, --human-readableboolean

Display disk usage

Example: bcachefs fs usage {{[-h|--human-readable]}} {{path/to/mountpoint}}

Examples (8)

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 [-l|--label] ssd.ssd1 path/to/ssd_partition [-l|--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 [-h|--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

Create a snapshot of a particular directory

bcachefs subvolume snapshot path/to/directory path/to/snapshot

made by @shridhargupta | data from tldr-pages