Как восстановить RAID I массив?

# mdadm /dev/md0 --fail /dev/sdb2
mdadm: set device faulty failed for /dev/sdb2:  No such device
# mdadm /dev/md0 --remove /dev/sdb2
mdadm: hot remove failed for /dev/sdb2: No such device or address
# mdadm /dev/md0 --add /dev/sdb2
mdadm: re-added /dev/sdb2

Проверяем

# cat /proc/mdstat 
Personalities : [raid1] 
md0 : active raid1 sdb2[1] sda2[0]
      1953118272 blocks super 1.2 [2/1] [U_]
      [>....................]  recovery =  0.0% (183936/1953118272) finish=1099.4min speed=29600K/sec
      bitmap: 13/15 pages [52KB], 65536KB chunk

unused devices: <none>
# mdadm --detail /dev/md0
/dev/md0:
           Version : 1.2
     Creation Time : Fri Sep 17 19:23:17 2021
        Raid Level : raid1
        Array Size : 1953118272 (1862.64 GiB 1999.99 GB)
     Used Dev Size : 1953118272 (1862.64 GiB 1999.99 GB)
      Raid Devices : 2
     Total Devices : 2
       Persistence : Superblock is persistent

     Intent Bitmap : Internal

       Update Time : Sun May 22 10:56:23 2022
             State : clean, degraded, recovering 
    Active Devices : 1
   Working Devices : 2
    Failed Devices : 0
     Spare Devices : 1

Consistency Policy : bitmap

    Rebuild Status : 2% complete

              Name : fedora:0
              UUID : 6ea9f03c:08f7bf9c:505d7938:bb484f9b
            Events : 104966

    Number   Major   Minor   RaidDevice State
       0       8        2        0      active sync   /dev/sda2
       1       8       18        1      spare rebuilding   /dev/sdb2