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Btrfs-rec: Recover (data from) a broken btrfs filesystem

• nubinetwork 3y ago
  > Surely losing less than 100MB of data from a drive should not render hundreds of GB of perfectly intact data unreadable! Considering btrfs doesn't have a working RAID implementation, screwing up a drive would lead to the volume being unusable, yes.
  • gmerc 3y ago
    Symbology devices ship with btrfs based raid by default.
    • voxadam 3y ago
      Synology's RAID is based on a combination of Btrfs and MD, it doesn't employ Btrfs' multi-device support at all.[0] [0] https://kb.synology.com/en-nz/DSM/tutorial/What_was_the_RAID_implementation_for_Btrfs_File_System_on_SynologyNAS https://kb.synology.com/en-nz/DSM/tutorial/What_was_the_RAID...
  • tiberious726 3y ago
    Raid 0 and raid 1 absolutely work well on btrfs, I've been running in production at scale for more than a decade. (Raid 5 and 6 are a different story, but frankly I think it's silly that modern systems talk about them at all, instead of general purpose erasure-coding.)