Questão Computador caiu, arranjo de ataque em apuros


Cheguei em casa hoje para descobrir que meu servidor estava desligado (não sei por quê). Voltei a ligá-lo novamente e o arranjo de raid estava falhando em montar.

/ proc / mdstat mostra:

Personalities :
md0 : inactive sdh[7](S) sdc[2](S) sdd[1](S) sdb[3](S) sde[0](S) sdg[5](S) sdi[6](S) sdf[4](S)
      39069143232 blocks super 1.2

unused devices: <none>

e mdadm --detail / dev / md0 diz que o nível de raid é raid0, quando na verdade é suposto ser raid6.

Olhando para mdadm -E em cada unidade individual. Todas as unidades separadas do sdg possuem um estado de matriz de AAAAA.AA, uma contagem de eventos de 191578 e o estado está ativo.

O sdg, no entanto, possui um estado de matriz de AAAAAAAA e uma contagem de eventos de 69286, e o estado é limpo.

Também digno de nota, a matriz UUID mostrada em -E é diferente da matriz UUID que eu tenho em /etc/mdadm.conf - embora isso possa ser devido a um problema que tive no passado em que a máquina falhou no início de um crescimento e eu tive que correr mdadm -CR /dev/md0 --metadata=1.2 --raid-devices=5 --level=6 -c512 /dev/sdb /dev/sdc /dev/sdd /dev/sdf /dev/sde --assume-clean que resolveu o problema, mas eu estou supondo que também mudou o array UUID.

Para referência, o sistema contém um ssd de boot (/ dev / sda) conectado à placa-mãe e 8 drives de 5TB para o array raid 6 (/ dev / sdb a / dev / sdi) conectado a um dell perc H310 no modo IT.

A saída do meu mdadm -E para todas as unidades:

/dev/sdb:
          Magic : a92b4efc
        Version : 1.2
    Feature Map : 0x1
     Array UUID : 2a625f41:32a13393:978936d5:902719da
           Name : azelphur-server:0  (local to host azelphur-server)
  Creation Time : Thu Mar 23 18:29:16 2017
     Raid Level : raid6
   Raid Devices : 8

 Avail Dev Size : 9767285168 (4657.40 GiB 5000.85 GB)
     Array Size : 29301835776 (27944.41 GiB 30005.08 GB)
  Used Dev Size : 9767278592 (4657.40 GiB 5000.85 GB)
    Data Offset : 250880 sectors
   Super Offset : 8 sectors
   Unused Space : before=250792 sectors, after=11696 sectors
          State : active
    Device UUID : 6228ab0d:6a65fce7:b7a2cda8:e246fbf9

Internal Bitmap : 8 sectors from superblock
    Update Time : Mon Jul 23 18:20:53 2018
  Bad Block Log : 512 entries available at offset 72 sectors
       Checksum : 36d4b421 - correct
         Events : 191578

         Layout : left-symmetric
     Chunk Size : 512K

   Device Role : Active device 3
   Array State : AAAAA.AA ('A' == active, '.' == missing, 'R' == replacing)
/dev/sdc:
          Magic : a92b4efc
        Version : 1.2
    Feature Map : 0x1
     Array UUID : 2a625f41:32a13393:978936d5:902719da
           Name : azelphur-server:0  (local to host azelphur-server)
  Creation Time : Thu Mar 23 18:29:16 2017
     Raid Level : raid6
   Raid Devices : 8

 Avail Dev Size : 9767285168 (4657.40 GiB 5000.85 GB)
     Array Size : 29301835776 (27944.41 GiB 30005.08 GB)
  Used Dev Size : 9767278592 (4657.40 GiB 5000.85 GB)
    Data Offset : 250880 sectors
   Super Offset : 8 sectors
   Unused Space : before=250792 sectors, after=11696 sectors
          State : active
    Device UUID : e08e56d8:a5eb2baf:b9362af3:369a4f84

Internal Bitmap : 8 sectors from superblock
    Update Time : Mon Jul 23 18:20:53 2018
  Bad Block Log : 512 entries available at offset 72 sectors
       Checksum : 9d60882f - correct
         Events : 191578

         Layout : left-symmetric
     Chunk Size : 512K

   Device Role : Active device 2
   Array State : AAAAA.AA ('A' == active, '.' == missing, 'R' == replacing)
/dev/sdd:
          Magic : a92b4efc
        Version : 1.2
    Feature Map : 0x1
     Array UUID : 2a625f41:32a13393:978936d5:902719da
           Name : azelphur-server:0  (local to host azelphur-server)
  Creation Time : Thu Mar 23 18:29:16 2017
     Raid Level : raid6
   Raid Devices : 8

 Avail Dev Size : 9767285168 (4657.40 GiB 5000.85 GB)
     Array Size : 29301835776 (27944.41 GiB 30005.08 GB)
  Used Dev Size : 9767278592 (4657.40 GiB 5000.85 GB)
    Data Offset : 250880 sectors
   Super Offset : 8 sectors
   Unused Space : before=250792 sectors, after=11696 sectors
          State : active
    Device UUID : 0b4e9aec:42dc5e1c:548f4882:34da967f

Internal Bitmap : 8 sectors from superblock
    Update Time : Mon Jul 23 18:20:53 2018
  Bad Block Log : 512 entries available at offset 72 sectors
       Checksum : a93cd08e - correct
         Events : 191578

         Layout : left-symmetric
     Chunk Size : 512K

   Device Role : Active device 1
   Array State : AAAAA.AA ('A' == active, '.' == missing, 'R' == replacing)
/dev/sde:
          Magic : a92b4efc
        Version : 1.2
    Feature Map : 0x1
     Array UUID : 2a625f41:32a13393:978936d5:902719da
           Name : azelphur-server:0  (local to host azelphur-server)
  Creation Time : Thu Mar 23 18:29:16 2017
     Raid Level : raid6
   Raid Devices : 8

 Avail Dev Size : 9767285168 (4657.40 GiB 5000.85 GB)
     Array Size : 29301835776 (27944.41 GiB 30005.08 GB)
  Used Dev Size : 9767278592 (4657.40 GiB 5000.85 GB)
    Data Offset : 250880 sectors
   Super Offset : 8 sectors
   Unused Space : before=250792 sectors, after=11696 sectors
          State : active
    Device UUID : ea04e5bb:f6c9f9ff:1e68eca2:8e990546

Internal Bitmap : 8 sectors from superblock
    Update Time : Mon Jul 23 18:20:53 2018
  Bad Block Log : 512 entries available at offset 72 sectors
       Checksum : 43350d45 - correct
         Events : 191578

         Layout : left-symmetric
     Chunk Size : 512K

   Device Role : Active device 0
   Array State : AAAAA.AA ('A' == active, '.' == missing, 'R' == replacing)
/dev/sdf:
          Magic : a92b4efc
        Version : 1.2
    Feature Map : 0x1
     Array UUID : 2a625f41:32a13393:978936d5:902719da
           Name : azelphur-server:0  (local to host azelphur-server)
  Creation Time : Thu Mar 23 18:29:16 2017
     Raid Level : raid6
   Raid Devices : 8

 Avail Dev Size : 9767285168 (4657.40 GiB 5000.85 GB)
     Array Size : 29301835776 (27944.41 GiB 30005.08 GB)
  Used Dev Size : 9767278592 (4657.40 GiB 5000.85 GB)
    Data Offset : 250880 sectors
   Super Offset : 8 sectors
   Unused Space : before=250792 sectors, after=11696 sectors
          State : active
    Device UUID : 03f09a11:5bc14011:8d3f7f4d:bc33d6b9

Internal Bitmap : 8 sectors from superblock
    Update Time : Mon Jul 23 18:20:53 2018
  Bad Block Log : 512 entries available at offset 72 sectors
       Checksum : c8956162 - correct
         Events : 191578

         Layout : left-symmetric
     Chunk Size : 512K

   Device Role : Active device 4
   Array State : AAAAA.AA ('A' == active, '.' == missing, 'R' == replacing)
/dev/sdg:
          Magic : a92b4efc
        Version : 1.2
    Feature Map : 0x1
     Array UUID : 2a625f41:32a13393:978936d5:902719da
           Name : azelphur-server:0  (local to host azelphur-server)
  Creation Time : Thu Mar 23 18:29:16 2017
     Raid Level : raid6
   Raid Devices : 8

 Avail Dev Size : 9767285168 (4657.40 GiB 5000.85 GB)
     Array Size : 29301835776 (27944.41 GiB 30005.08 GB)
  Used Dev Size : 9767278592 (4657.40 GiB 5000.85 GB)
    Data Offset : 250880 sectors
   Super Offset : 8 sectors
   Unused Space : before=250800 sectors, after=11696 sectors
          State : clean
    Device UUID : 3b0f7209:ed729a79:2ebc9ab1:07d6e063

Internal Bitmap : 8 sectors from superblock
    Update Time : Sun Jul  8 17:26:16 2018
  Bad Block Log : 512 entries available at offset 32 sectors
       Checksum : 36dc9ff0 - correct
         Events : 69286

         Layout : left-symmetric
     Chunk Size : 512K

   Device Role : Active device 5
   Array State : AAAAAAAA ('A' == active, '.' == missing, 'R' == replacing)
/dev/sdh:
          Magic : a92b4efc
        Version : 1.2
    Feature Map : 0x1
     Array UUID : 2a625f41:32a13393:978936d5:902719da
           Name : azelphur-server:0  (local to host azelphur-server)
  Creation Time : Thu Mar 23 18:29:16 2017
     Raid Level : raid6
   Raid Devices : 8

 Avail Dev Size : 9767290288 (4657.41 GiB 5000.85 GB)
     Array Size : 29301835776 (27944.41 GiB 30005.08 GB)
  Used Dev Size : 9767278592 (4657.40 GiB 5000.85 GB)
    Data Offset : 250880 sectors
   Super Offset : 8 sectors
   Unused Space : before=250800 sectors, after=11696 sectors
          State : active
    Device UUID : e042a7da:1cb4058f:6a976fa7:f30203e1

Internal Bitmap : 8 sectors from superblock
    Update Time : Mon Jul 23 18:20:53 2018
  Bad Block Log : 512 entries available at offset 32 sectors
       Checksum : 9083e1f1 - correct
         Events : 191578

         Layout : left-symmetric
     Chunk Size : 512K

   Device Role : Active device 7
   Array State : AAAAA.AA ('A' == active, '.' == missing, 'R' == replacing)
/dev/sdi:
          Magic : a92b4efc
        Version : 1.2
    Feature Map : 0x1
     Array UUID : 2a625f41:32a13393:978936d5:902719da
           Name : azelphur-server:0  (local to host azelphur-server)
  Creation Time : Thu Mar 23 18:29:16 2017
     Raid Level : raid6
   Raid Devices : 8

 Avail Dev Size : 9767285168 (4657.40 GiB 5000.85 GB)
     Array Size : 29301835776 (27944.41 GiB 30005.08 GB)
  Used Dev Size : 9767278592 (4657.40 GiB 5000.85 GB)
    Data Offset : 250880 sectors
   Super Offset : 8 sectors
   Unused Space : before=250800 sectors, after=11696 sectors
          State : active
    Device UUID : 5742d56b:3c9b9f70:35e9550f:349db858

Internal Bitmap : 8 sectors from superblock
    Update Time : Mon Jul 23 18:20:53 2018
  Bad Block Log : 512 entries available at offset 32 sectors
       Checksum : e2e7a091 - correct
         Events : 191578

         Layout : left-symmetric
     Chunk Size : 512K

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

A saída de lsdrv:

PCI [ahci] 00:1f.2 SATA controller: Intel Corporation 8 Series/C220 Series Chipset Family 6-port SATA Controller 1 [AHCI mode] (rev 04)
└scsi 1:0:0:0 ATA      Samsung SSD 840 
 └sda 465.76g [8:0] Empty/Unknown
  ├sda1 512.00m [8:1] Empty/Unknown
  │└Mounted as /dev/sda1 @ /boot
  ├sda2 457.78g [8:2] Empty/Unknown
  │└Mounted as /dev/sda2 @ /
  └sda3 7.48g [8:3] Empty/Unknown
PCI [mpt3sas] 02:00.0 Serial Attached SCSI controller: LSI Logic / Symbios Logic SAS2008 PCI-Express Fusion-MPT SAS-2 [Falcon] (rev 03)
├phy-0:0 scsi 0:0:0:0 ATA      TOSHIBA MD04ACA5
│└sdb 4.55t [8:16] Empty/Unknown
│ └md0 0.00k [9:0] MD v1.2  () inactive, None (None) None {None}
│                  Empty/Unknown
├phy-0:1 scsi 0:0:1:0 ATA      TOSHIBA MD04ACA5
│└sdc 4.55t [8:32] Empty/Unknown
│ └md0 0.00k [9:0] MD v1.2  () inactive, None (None) None {None}
│                  Empty/Unknown
├phy-0:2 scsi 0:0:2:0 ATA      TOSHIBA MD04ACA5
│└sdd 4.55t [8:48] Empty/Unknown
│ └md0 0.00k [9:0] MD v1.2  () inactive, None (None) None {None}
│                  Empty/Unknown
├phy-0:3 scsi 0:0:3:0 ATA      TOSHIBA MD04ACA5
│└sde 4.55t [8:64] Empty/Unknown
│ └md0 0.00k [9:0] MD v1.2  () inactive, None (None) None {None}
│                  Empty/Unknown
├phy-0:4 scsi 0:0:4:0 ATA      ST5000DM000-1FK1
│└sdf 4.55t [8:80] Empty/Unknown
│ └md0 0.00k [9:0] MD v1.2  () inactive, None (None) None {None}
│                  Empty/Unknown
├phy-0:5 scsi 0:0:5:0 ATA      ST5000DM000-1FK1
│└sdg 4.55t [8:96] Empty/Unknown
│ └md0 0.00k [9:0] MD v1.2  () inactive, None (None) None {None}
│                  Empty/Unknown
├phy-0:6 scsi 0:0:7:0 ATA      ST5000DM000-1FK1
│└sdi 4.55t [8:128] Empty/Unknown
│ └md0 0.00k [9:0] MD v1.2  () inactive, None (None) None {None}
│                  Empty/Unknown
└phy-0:7 scsi 0:0:6:0 ATA      TOSHIBA MD04ACA5
 └sdh 4.55t [8:112] Empty/Unknown
  └md0 0.00k [9:0] MD v1.2  () inactive, None (None) None {None}
                   Empty/Unknown

Smartctl para todas as unidades: https://pastebin.com/raw/04HeUBzw


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