RAID10 в mdadm сломался

# cat /proc/mdstat
Personalities : [raid10] [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4]
md1 : active raid10 sdc2[1] sdb2[2]
      1848402944 blocks super 1.2 512K chunks 2 near-copies [4/2] [_UU_]
      bitmap: 1/14 pages [4KB], 65536KB chunk

md0 : active raid10 sdc1[1] sdb1[2]
      104792064 blocks super 1.2 512K chunks 2 near-copies [4/2] [_UU_]

# mdadm -D /dev/md0
/dev/md0:
           Version : 1.2
     Creation Time : Tue Jul 21 10:03:05 2020
        Raid Level : raid10
        Array Size : 104792064 (99.94 GiB 107.31 GB)
     Used Dev Size : 52396032 (49.97 GiB 53.65 GB)
      Raid Devices : 4
     Total Devices : 2
       Persistence : Superblock is persistent

       Update Time : Mon Jan 12 11:48:06 2026
             State : clean, degraded
    Active Devices : 2
   Working Devices : 2
    Failed Devices : 0
     Spare Devices : 0

            Layout : near=2
        Chunk Size : 512K

Consistency Policy : resync

    Number   Major   Minor   RaidDevice State
       -       0        0        0      removed
       1       8       33        1      active sync set-B
       2       8       17        2      active sync set-A
       -       0        0        3      removed

# mdadm --manage /dev/md0 --add /dev/sda1
mdadm: cannot load array metadata from /dev/md0