Linux command
btrfs-check 命令
安全
权限或系统影响较大，执行前请核对目标。
常用示例
Check
sudo btrfs check [path/to/partition]
Example
sudo btrfs check --repair [path/to/partition]
Example
sudo btrfs check -p [path/to/partition]
Example
sudo btrfs check --check-data-csum [path/to/partition]
Example
sudo btrfs check -s [n] [path/to/partition]
Rebuild
sudo btrfs check --repair --init-csum-tree [path/to/partition]
Rebuild
sudo btrfs check --repair --init-extent-tree [path/to/partition]
说明
btrfs check examines btrfs filesystem structures for consistency errors and can optionally repair certain types of damage. It operates on unmounted filesystems only. The check mode is non-destructive and reports issues. The repair mode attempts fixes but carries risk of data loss if used incorrectly.
参数
- --repair
- Attempt to fix detected errors (dangerous, backup first)
- -p, --progress
- Show progress during the check
- --check-data-csum
- Verify data block checksums
- -s, --super _num_
- Use the specified superblock copy (0, 1, or 2)
- --init-csum-tree
- Rebuild the checksum tree from scratch
- --init-extent-tree
- Rebuild the extent tree from scratch
- --readonly
- Run in read-only mode (default)
FAQ
What is the btrfs-check command used for?
btrfs check examines btrfs filesystem structures for consistency errors and can optionally repair certain types of damage. It operates on unmounted filesystems only. The check mode is non-destructive and reports issues. The repair mode attempts fixes but carries risk of data loss if used incorrectly.
How do I run a basic btrfs-check example?
Run `sudo btrfs check [path/to/partition]` in a terminal, then adjust file names, paths, flags, or remote targets for your system.
What does --repair do in btrfs-check?
Attempt to fix detected errors (dangerous, backup first)