2021-10-25 22:14:30 +01:00
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# btrfs rescue
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> Try to recover a damaged btrfs filesystem.
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2022-11-15 11:50:15 +00:00
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> More information: <https://btrfs.readthedocs.io/en/latest/btrfs-rescue.html>.
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2021-10-25 22:14:30 +01:00
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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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