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34 lines
1014 B
Plaintext
34 lines
1014 B
Plaintext
---
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syntax: markdown
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tags: [tldr, linux]
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source: https://github.com/tldr-pages/tldr.git
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---
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# btrfs filesystem
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> Manage btrfs filesystems.
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> More information: <https://btrfs.readthedocs.io/en/latest/btrfs-filesystem.html>.
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- Show filesystem usage (optionally run as root to show detailed information):
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`btrfs filesystem usage {{path/to/btrfs_mount}}`
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- Show usage by individual devices:
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`sudo btrfs filesystem show {{path/to/btrfs_mount}}`
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- Defragment a single file on a btrfs filesystem (avoid while a deduplication agent is running):
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`sudo btrfs filesystem defragment {{[-v|--verbose]}} {{path/to/file}}`
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- Defragment a directory recursively (does not cross subvolume boundaries):
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`sudo btrfs filesystem defragment {{[-v|--verbose]}} -r {{path/to/directory}}`
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- Force syncing unwritten data blocks to disk(s):
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`sudo btrfs filesystem sync {{path/to/btrfs_mount}}`
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- Summarize disk usage for the files in a directory recursively:
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`sudo btrfs filesystem du {{[-s|--summarize]}} {{path/to/directory}}`
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