snippetbashTip
btrfs filesystem — Manage btrfs filesystems. More information: <https://btrfs.readthedocs.io/en/latest/btrfs-filesystem
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linux
Problem
How to use the
btrfs filesystem command: Manage btrfs filesystems. More information: <https://btrfs.readthedocs.io/en/latest/btrfs-filesystem.html>.Solution
btrfs filesystem — Manage btrfs filesystems. More information: <https://btrfs.readthedocs.io/en/latest/btrfs-filesystem.html>.Show filesystem usage (optionally run as root to show detailed information):
btrfs {{[f|filesystem]}} {{[u|usage]}} {{path/to/btrfs_mount}}Show usage by individual devices:
sudo btrfs {{[f|filesystem]}} {{[sh|show]}} {{path/to/btrfs_mount}}Defragment a single file on a btrfs filesystem (avoid while a deduplication agent is running):
sudo btrfs {{[f|filesystem]}} {{[de|defragment]}} {{[-v|--verbose]}} {{path/to/file}}Defragment a directory recursively (does not cross subvolume boundaries):
sudo btrfs {{[f|filesystem]}} {{[de|defragment]}} {{[-v|--verbose]}} -r {{path/to/directory}}Force syncing unwritten data blocks to disk(s):
sudo btrfs {{[f|filesystem]}} {{[sy|sync]}} {{path/to/btrfs_mount}}Summarize disk usage for the files in a directory recursively:
sudo btrfs {{[f|filesystem]}} du {{[-s|--summarize]}} {{path/to/directory}}Create a swap file:
sudo btrfs {{[f|filesystem]}} {{[m|mkswapfile]}} --size {{8g}} --uuid {{clear|random|time|UUID_value}} {{path/to/swapfile}}Code Snippets
Show filesystem usage (optionally run as root to show detailed information)
btrfs {{[f|filesystem]}} {{[u|usage]}} {{path/to/btrfs_mount}}Show usage by individual devices
sudo btrfs {{[f|filesystem]}} {{[sh|show]}} {{path/to/btrfs_mount}}Defragment a single file on a btrfs filesystem (avoid while a deduplication agent is running)
sudo btrfs {{[f|filesystem]}} {{[de|defragment]}} {{[-v|--verbose]}} {{path/to/file}}Defragment a directory recursively (does not cross subvolume boundaries)
sudo btrfs {{[f|filesystem]}} {{[de|defragment]}} {{[-v|--verbose]}} -r {{path/to/directory}}Force syncing unwritten data blocks to disk(s)
sudo btrfs {{[f|filesystem]}} {{[sy|sync]}} {{path/to/btrfs_mount}}Context
tldr-pages: linux/btrfs filesystem
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