小编Liv*_*ius的帖子

我有一个用 BTRFS 格式化的外部驱动器似乎拒绝安装：

$ sudo mount -vs -t btrfs  -o ro,recovery,errors=continue /dev/sdb2 /media/user/dir
mount: /dev/sdb2: can't read superblock

但是，当 BTRFS 认为所有超级块都可以时：

$ sudo btrfs rescue super-recover -v /dev/sdb2                 
All Devices:
        Device: id = 1, name = /dev/sdb2

Before Recovering:
        [All good supers]:
                device name = /dev/sdb2
                superblock bytenr = 65536

                device name = /dev/sdb2
                superblock bytenr = 67108864

                device name = /dev/sdb2
                superblock bytenr = 274877906944

        [All bad supers]:

All supers are valid, no need to recover

如果我尝试指定sb=$((67108864/4))（ …