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30 lines
916 B
Plaintext
30 lines
916 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 rescue
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> Try to recover a damaged btrfs filesystem.
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> More information: <https://btrfs.readthedocs.io/en/latest/btrfs-rescue.html>.
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- Rebuild the filesystem metadata tree (very slow):
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`sudo btrfs rescue chunk-recover {{path/to/partition}}`
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- Fix device size alignment related problems (e.g. unable to mount the filesystem with super total bytes mismatch):
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`sudo btrfs rescue fix-device-size {{path/to/partition}}`
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- Recover a corrupted superblock from correct copies (recover the root of filesystem tree):
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`sudo btrfs rescue super-recover {{path/to/partition}}`
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- Recover from an interrupted transactions (fixes log replay problems):
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`sudo btrfs rescue zero-log {{path/to/partition}}`
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- Create a `/dev/btrfs-control` control device when `mknod` is not installed:
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`sudo btrfs rescue create-control-device`
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