Após a reinicialização, a invasão do software Linux não inclui um dispositivo de uma matriz RAID1

Question

Um dos meus quatro arrays de raid de software para Linux descarta um de seus dois dispositivos quando eu reinicio meu sistema. Os outros três arrays funcionam bem. Estou executando o RAID1 na versão do kernel 2.6.32-5-amd64 (Debian Squeeze). Toda vez que eu reinicio, o / dev / md2 vem com apenas um dispositivo. Eu posso adicionar manualmente o dispositivo dizendo $ sudo mdadm / dev / md2 --add / dev / sdc1. Isso funciona bem, e o mdadm confirma que o dispositivo foi adicionado novamente da seguinte forma:

mdadm: re-added /dev/sdc1

Depois de adicionar o dispositivo e permitir que o tempo da matriz seja ressincronizado, esta é a aparência da saída de $ cat / proc / mdstat:

Personalities : [raid1] 
md3 : active raid1 sda4[0] sdb4[1]
      244186840 blocks super 1.2 [2/2] [UU]

md2 : active raid1 sdc1[0] sdd1[1]
      732574464 blocks [2/2] [UU]

md1 : active raid1 sda3[0] sdb3[1]
      722804416 blocks [2/2] [UU]

md0 : active raid1 sda1[0] sdb1[1]
      6835520 blocks [2/2] [UU]

unused devices: <none>

Então, depois que eu reinicio, esta é a aparência da saída de $ cat / proc / mdstat:

Personalities : [raid1] 
md3 : active raid1 sda4[0] sdb4[1]
      244186840 blocks super 1.2 [2/2] [UU]

md2 : active raid1 sdd1[1]
      732574464 blocks [2/1] [_U]

md1 : active raid1 sda3[0] sdb3[1]
      722804416 blocks [2/2] [UU]

md0 : active raid1 sda1[0] sdb1[1]
      6835520 blocks [2/2] [UU]

unused devices: <none>

Durante a reinicialização, aqui está a saída de $ sudo cat / var / log / syslog | grep mdadm:

Jun 22 19:00:08 rook mdadm[1709]: RebuildFinished event detected on md device /dev/md2
Jun 22 19:00:08 rook mdadm[1709]: SpareActive event detected on md device /dev/md2, component device /dev/sdc1
Jun 22 19:00:20 rook kernel: [ 7819.446412] mdadm: sending ioctl 1261 to a partition!
Jun 22 19:00:20 rook kernel: [ 7819.446415] mdadm: sending ioctl 1261 to a partition!
Jun 22 19:00:20 rook kernel: [ 7819.446782] mdadm: sending ioctl 1261 to a partition!
Jun 22 19:00:20 rook kernel: [ 7819.446785] mdadm: sending ioctl 1261 to a partition!
Jun 22 19:00:20 rook kernel: [ 7819.515844] mdadm: sending ioctl 1261 to a partition!
Jun 22 19:00:20 rook kernel: [ 7819.515847] mdadm: sending ioctl 1261 to a partition!
Jun 22 19:00:20 rook kernel: [ 7819.606829] mdadm: sending ioctl 1261 to a partition!
Jun 22 19:00:20 rook kernel: [ 7819.606832] mdadm: sending ioctl 1261 to a partition!
Jun 22 19:03:48 rook kernel: [ 8027.855616] mdadm: sending ioctl 1261 to a partition!
Jun 22 19:03:48 rook kernel: [ 8027.855620] mdadm: sending ioctl 1261 to a partition!
Jun 22 19:03:48 rook kernel: [ 8027.855950] mdadm: sending ioctl 1261 to a partition!
Jun 22 19:03:48 rook kernel: [ 8027.855952] mdadm: sending ioctl 1261 to a partition!
Jun 22 19:03:49 rook kernel: [ 8027.962169] mdadm: sending ioctl 1261 to a partition!
Jun 22 19:03:49 rook kernel: [ 8027.962171] mdadm: sending ioctl 1261 to a partition!
Jun 22 19:03:49 rook kernel: [ 8028.054365] mdadm: sending ioctl 1261 to a partition!
Jun 22 19:03:49 rook kernel: [ 8028.054368] mdadm: sending ioctl 1261 to a partition!
Jun 22 19:10:23 rook kernel: [    9.588662] mdadm: sending ioctl 1261 to a partition!
Jun 22 19:10:23 rook kernel: [    9.588664] mdadm: sending ioctl 1261 to a partition!
Jun 22 19:10:23 rook kernel: [    9.601990] mdadm: sending ioctl 1261 to a partition!
Jun 22 19:10:23 rook kernel: [    9.601991] mdadm: sending ioctl 1261 to a partition!
Jun 22 19:10:23 rook kernel: [    9.602693] mdadm: sending ioctl 1261 to a partition!
Jun 22 19:10:23 rook kernel: [    9.602695] mdadm: sending ioctl 1261 to a partition!
Jun 22 19:10:23 rook kernel: [    9.605981] mdadm: sending ioctl 1261 to a partition!
Jun 22 19:10:23 rook kernel: [    9.605983] mdadm: sending ioctl 1261 to a partition!
Jun 22 19:10:23 rook kernel: [    9.606138] mdadm: sending ioctl 800c0910 to a partition!
Jun 22 19:10:23 rook kernel: [    9.606139] mdadm: sending ioctl 800c0910 to a partition!
Jun 22 19:10:48 rook mdadm[1737]: DegradedArray event detected on md device /dev/md2

Aqui está o resultado de $ cat /etc/mdadm/mdadm.conf:

ARRAY /dev/md0 metadata=0.90 UUID=92121d42:37f46b82:926983e9:7d8aad9b
ARRAY /dev/md1 metadata=0.90 UUID=9c1bafc3:1762d51d:c1ae3c29:66348110
ARRAY /dev/md2 metadata=0.90 UUID=98cea6ca:25b5f305:49e8ec88:e84bc7f0
ARRAY /dev/md3 metadata=1.2 name=rook:3 UUID=ca3fce37:95d49a09:badd0ddc:b63a4792

Aqui está a saída de $ sudo mdadm -E / dev / sdc1 depois de adicionar novamente o dispositivo e deixá-lo ressincronizar:

/dev/sdc1:
          Magic : a92b4efc
        Version : 0.90.00
           UUID : 98cea6ca:25b5f305:49e8ec88:e84bc7f0 (local to host rook)
  Creation Time : Sun Jul 13 08:05:55 2008
     Raid Level : raid1
  Used Dev Size : 732574464 (698.64 GiB 750.16 GB)
     Array Size : 732574464 (698.64 GiB 750.16 GB)
   Raid Devices : 2
  Total Devices : 2
Preferred Minor : 2

    Update Time : Mon Jun 24 07:42:49 2013
          State : clean
 Active Devices : 2
Working Devices : 2
 Failed Devices : 0
  Spare Devices : 0
       Checksum : 5fd6cc13 - correct
         Events : 180998


      Number   Major   Minor   RaidDevice State
this     0       8       33        0      active sync   /dev/sdc1

   0     0       8       33        0      active sync   /dev/sdc1
   1     1       8       49        1      active sync   /dev/sdd1

Aqui está a saída de $ sudo mdadm -D / dev / md2 depois de adicionar novamente o dispositivo e deixá-lo ressincronizar:

/dev/md2:
        Version : 0.90
  Creation Time : Sun Jul 13 08:05:55 2008
     Raid Level : raid1
     Array Size : 732574464 (698.64 GiB 750.16 GB)
  Used Dev Size : 732574464 (698.64 GiB 750.16 GB)
   Raid Devices : 2
  Total Devices : 2
Preferred Minor : 2
    Persistence : Superblock is persistent

    Update Time : Mon Jun 24 07:42:49 2013
          State : clean
 Active Devices : 2
Working Devices : 2
 Failed Devices : 0
  Spare Devices : 0

           UUID : 98cea6ca:25b5f305:49e8ec88:e84bc7f0 (local to host rook)
         Events : 0.180998

    Number   Major   Minor   RaidDevice State
       0       8       33        0      active sync   /dev/sdc1
       1       8       49        1      active sync   /dev/sdd1

Eu também executei $ sudo smartctl -t long / dev / sdc e nenhum problema de hardware foi detectado. Contanto que eu não reinicie, / dev / md2 parece funcionar bem. Alguém tem alguma sugestão?