Translations:Btrfs/68/en
From Manjaro
Full check
Sometimes you may want to check ALL files, and to get a report of defects, because:
- Some files are read very seldom, and you don't want "bitrott"
- You want to check your data completely for any faults
- Once in a while you want to make sure all is well
- You want to force your disk/device to verify all data
- ...
This is when you use btrfs scrub. Scrub will read ALL data of your complete volume. While this is done, all files and metadata will be checked by the checksums and all problems will be reportet. Because this will read and verify your complete volume (eventually a few Terra-byte), it may take some time. Scrub will not waste time in checking unused chunks. While checking you can enable automatic repair for RAID 1 or disable it. If you disable automatic repair, scrub will work completely readonly, and will change nothing on your volume.