Device    Boot     Start        End     Blocks  Id System
/dev/sdb1           2048   33556480   16777216+ fd Linux raid autodetect
/dev/sdb2       33558528   34607104     524288+ fd Linux raid autodetect
/dev/sdb3       34609152 3907027120 1936208984+ fd Linux raid autodetect

/boot:
  Disk /dev/md127: 511,7 MiB, 536543232 bytes, 1047936 sectors

/:
  Disk /dev/md126: 1,8 TiB, 1982543626240 bytes, 3872155520 sectors

swap:
  Disk /dev/md125: 16 GiB, 17171349504 bytes, 33537792 sectors