Apenas metade das minhas unidades são montadas durante uma recuperação de RAID

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Apenas metade das minhas unidades são montadas durante uma recuperação de RAID

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Eu tenho um RAID de 8 unidades que estou tentando recuperar. A montagem encontrou apenas 4 dos 8 drives. Por que as outras unidades não foram encontradas?

me @ mjf-svr: ~ $ cat / proc / mdstat

Personalities : [raid6] [raid5] [raid4] [linear] [multipath] [raid0] [raid1] [raid10] 
md1 : inactive sdn[7](S) sdk[4](S) sdm[6](S) sdl[5](S) sdi[1](S) sdj[0](S) sdh[2](S) sdg[3](S)
      15627068096 blocks super 1.2

md127 : active raid5 sde1[1] sdf1[3] sdd1[0]
      1953522688 blocks super 1.2 level 5, 512k chunk, algorithm 2 [3/3] [UUU]

unused devices: <none>

me @ mjf-svr: ~ $ sudo mdadm --stop / dev / md1

[sudo] password for me: 
mdadm: stopped /dev/md1

me @ mjf-svr: ~ $ sudo mdadm --examinam / dev / sd [g-n]

/dev/sdg:
          Magic : a92b4efc
        Version : 1.2
    Feature Map : 0x0
     Array UUID : e2f38846:949163bc:c50d752a:069b9e1d
           Name : mjf-svr:1
  Creation Time : Sun Feb 22 21:45:59 2015
     Raid Level : raid6
   Raid Devices : 8

 Avail Dev Size : 3906767024 (1862.89 GiB 2000.26 GB)
     Array Size : 11720297472 (11177.35 GiB 12001.58 GB)
  Used Dev Size : 3906765824 (1862.89 GiB 2000.26 GB)
    Data Offset : 262144 sectors
   Super Offset : 8 sectors
   Unused Space : before=262064 sectors, after=1200 sectors
          State : active
    Device UUID : a32f5f14:7b91eeb6:c5319782:419cdf3f

    Update Time : Mon Mar 28 18:47:10 2016
       Checksum : 673e7d4e - correct
         Events : 6597

         Layout : left-symmetric
     Chunk Size : 512K

   Device Role : Active device 3
   Array State : AAAAAAAA ('A' == active, '.' == missing, 'R' == replacing)

/dev/sdh:
          Magic : a92b4efc
        Version : 1.2
    Feature Map : 0x0
     Array UUID : e2f38846:949163bc:c50d752a:069b9e1d
           Name : mjf-svr:1
  Creation Time : Sun Feb 22 21:45:59 2015
     Raid Level : raid6
   Raid Devices : 8

 Avail Dev Size : 3906767024 (1862.89 GiB 2000.26 GB)
     Array Size : 11720297472 (11177.35 GiB 12001.58 GB)
  Used Dev Size : 3906765824 (1862.89 GiB 2000.26 GB)
    Data Offset : 262144 sectors
   Super Offset : 8 sectors
   Unused Space : before=262064 sectors, after=1200 sectors
          State : active
    Device UUID : f7f68c18:300fb414:18a46a9a:05c55ecf

    Update Time : Mon Mar 28 18:47:10 2016
       Checksum : 70845d6d - correct
         Events : 6597

         Layout : left-symmetric
     Chunk Size : 512K

   Device Role : Active device 2
   Array State : AAAAAAAA ('A' == active, '.' == missing, 'R' == replacing)

/dev/sdi:
          Magic : a92b4efc
        Version : 1.2
    Feature Map : 0x0
     Array UUID : e2f38846:949163bc:c50d752a:069b9e1d
           Name : mjf-svr:1
  Creation Time : Sun Feb 22 21:45:59 2015
     Raid Level : raid6
   Raid Devices : 8

 Avail Dev Size : 3906767024 (1862.89 GiB 2000.26 GB)
     Array Size : 11720297472 (11177.35 GiB 12001.58 GB)
  Used Dev Size : 3906765824 (1862.89 GiB 2000.26 GB)
    Data Offset : 262144 sectors
   Super Offset : 8 sectors
   Unused Space : before=262064 sectors, after=1200 sectors
          State : active
    Device UUID : e6f99981:b73578d2:77ad1b95:ee472611

    Update Time : Mon Mar 28 18:47:10 2016
       Checksum : d3ce132a - correct
         Events : 6597

         Layout : left-symmetric
     Chunk Size : 512K

   Device Role : Active device 1
   Array State : AAAAAAAA ('A' == active, '.' == missing, 'R' == replacing)

/dev/sdj:
          Magic : a92b4efc
        Version : 1.2
    Feature Map : 0x0
     Array UUID : e2f38846:949163bc:c50d752a:069b9e1d
           Name : mjf-svr:1
  Creation Time : Sun Feb 22 21:45:59 2015
     Raid Level : raid6
   Raid Devices : 8

 Avail Dev Size : 3906767024 (1862.89 GiB 2000.26 GB)
     Array Size : 11720297472 (11177.35 GiB 12001.58 GB)
  Used Dev Size : 3906765824 (1862.89 GiB 2000.26 GB)
    Data Offset : 262144 sectors
   Super Offset : 8 sectors
   Unused Space : before=262064 sectors, after=1200 sectors
          State : active
    Device UUID : 0a12d1bd:223f4f49:5d60861c:de9f902a

    Update Time : Mon Mar 28 18:47:10 2016
       Checksum : 27b13f8e - correct
         Events : 6597

         Layout : left-symmetric
     Chunk Size : 512K

   Device Role : Active device 0
   Array State : AAAAAAAA ('A' == active, '.' == missing, 'R' == replacing)

/dev/sdk:
          Magic : a92b4efc
        Version : 1.2
    Feature Map : 0x0
     Array UUID : e2f38846:949163bc:c50d752a:069b9e1d
           Name : mjf-svr:1
  Creation Time : Sun Feb 22 21:45:59 2015
     Raid Level : raid6
   Raid Devices : 8

 Avail Dev Size : 3906767024 (1862.89 GiB 2000.26 GB)
     Array Size : 11720297472 (11177.35 GiB 12001.58 GB)
  Used Dev Size : 3906765824 (1862.89 GiB 2000.26 GB)
    Data Offset : 262144 sectors
   Super Offset : 8 sectors
   Unused Space : before=262064 sectors, after=1200 sectors
          State : clean
    Device UUID : 5e1f443d:d22cf4df:501573f1:0b5d9e68

    Update Time : Sun Apr  3 00:57:01 2016
       Checksum : 50c49b69 - correct
         Events : 6732

         Layout : left-symmetric
     Chunk Size : 512K

   Device Role : Active device 4
   Array State : ....AAAA ('A' == active, '.' == missing, 'R' == replacing)

/dev/sdl:
          Magic : a92b4efc
        Version : 1.2
    Feature Map : 0x0
     Array UUID : e2f38846:949163bc:c50d752a:069b9e1d
           Name : mjf-svr:1
  Creation Time : Sun Feb 22 21:45:59 2015
     Raid Level : raid6
   Raid Devices : 8

 Avail Dev Size : 3906767024 (1862.89 GiB 2000.26 GB)
     Array Size : 11720297472 (11177.35 GiB 12001.58 GB)
  Used Dev Size : 3906765824 (1862.89 GiB 2000.26 GB)
    Data Offset : 262144 sectors
   Super Offset : 8 sectors
   Unused Space : before=262064 sectors, after=1200 sectors
          State : clean
    Device UUID : afc36449:e71aa993:c9a8c3f6:ee6c37a7

    Update Time : Sun Apr  3 00:57:01 2016
       Checksum : 5483d12c - correct
         Events : 6732

         Layout : left-symmetric
     Chunk Size : 512K

   Device Role : Active device 5
   Array State : ....AAAA ('A' == active, '.' == missing, 'R' == replacing)

/dev/sdm:
          Magic : a92b4efc
        Version : 1.2
    Feature Map : 0x0
     Array UUID : e2f38846:949163bc:c50d752a:069b9e1d
           Name : mjf-svr:1
  Creation Time : Sun Feb 22 21:45:59 2015
     Raid Level : raid6
   Raid Devices : 8

 Avail Dev Size : 3906767024 (1862.89 GiB 2000.26 GB)
     Array Size : 11720297472 (11177.35 GiB 12001.58 GB)
  Used Dev Size : 3906765824 (1862.89 GiB 2000.26 GB)
    Data Offset : 262144 sectors
   Super Offset : 8 sectors
   Unused Space : before=262064 sectors, after=1200 sectors
          State : clean
    Device UUID : 67bf80fb:dc2cab8b:a743a9f1:8a535392

    Update Time : Sun Apr  3 00:57:01 2016
       Checksum : e4a36054 - correct
         Events : 6732

         Layout : left-symmetric
     Chunk Size : 512K

   Device Role : Active device 6
   Array State : ....AAAA ('A' == active, '.' == missing, 'R' == replacing)

/dev/sdn:
          Magic : a92b4efc
        Version : 1.2
    Feature Map : 0x0
     Array UUID : e2f38846:949163bc:c50d752a:069b9e1d
           Name : mjf-svr:1
  Creation Time : Sun Feb 22 21:45:59 2015
     Raid Level : raid6
   Raid Devices : 8

 Avail Dev Size : 3906767024 (1862.89 GiB 2000.26 GB)
     Array Size : 11720297472 (11177.35 GiB 12001.58 GB)
  Used Dev Size : 3906765824 (1862.89 GiB 2000.26 GB)
    Data Offset : 262144 sectors
   Super Offset : 8 sectors
   Unused Space : before=262064 sectors, after=1200 sectors
          State : clean
    Device UUID : 02c9a435:14df0bca:7d3174de:540f924d

    Update Time : Sun Apr  3 00:57:01 2016
       Checksum : 531c5c8 - correct
         Events : 6732

         Layout : left-symmetric
     Chunk Size : 512K

   Device Role : Active device 7
   Array State : ....AAAA ('A' == active, '.' == missing, 'R' == replacing)

me @ mjf-svr: ~ $ sudo mdadm --assemble / dev / md1 / dev / sd [g-n]

mdadm: /dev/md1 assembled from 4 drives - not enough to start the array.

me @ mjf-svr: ~ $ sudo mdadm --assemble --scan --uuid = e2f38846: 949163bc: c50d752a: 069b9e1d

    mdadm: /dev/md/mjf-svr:1 assembled from 4 drives - not enough to start the array.

me @ mjf-svr: ~ $

raid mdadm uuid

por Michael 28.09.2016 / 03:36

1 resposta

Tags raid mdadm uuid

Problema de script de shell: interpretado como um caractere multi-hop rsync através de ssh + netcat falha muito rapidamente: conexão inesperadamente fechada

score 1 · Answer 1

Quatro dos seus dispositivos têm uma contagem de eventos de 6732 e acham que fazem parte de um array RAID-6 de oito dispositivos com quatro dispositivos ausentes. Os outros quatro têm uma contagem de eventos de 6597 e pensam que são parte de um array RAID-6 de oito dispositivos intacto. Eu estou supondo que em 28 de março às 18:47:10 você teve uma falha no controlador ou outro problema que bateu metade de suas unidades off-line.

Espero que você tenha um backup. Você pode tentar o procedimento de Recuperando um RAID de software com falha do wiki Linux RAID (o passo-chave é montar a matriz com --force ; o propósito do restante do procedimento é descobrir com antecedência se isso salvará seus dados ou os destruirá), mas com a diferença significativa na contagem de eventos, eu não esperaria que fosse bem-sucedida .