在 VirtualBox 上用三块虚拟硬盘弄的 RAID
btrfs -d raid5 /dev/sda /dev/sdb /dev/sdc
Total devices 3 FS bytes used 2.15TiB
devid 1 size 2.73TiB used 2.16TiB path /dev/sda
devid 2 size 2.73TiB used 2.16TiB path /dev/sdb
devid 3 size 2.73TiB used 0.00B path /dev/sdc
卸掉了第三块虚拟硬盘 模拟硬盘 GG
Total devices 3 FS bytes used 2.15TiB
devid 1 size 2.73TiB used 2.16TiB path /dev/sda
devid 2 size 2.73TiB used 2.16TiB path /dev/sdb
*** Some devices missing
只执行这条命令好像没有效果
btrfs replace start /dev/sdc /dev/sdd /mnt/foo