Eu tive um erro em um RAID de software. Depois de alterar um disco, não consigo montar o array porque o mdadm diz: mdadm: /dev/sdb3 is busy - skipping .
# --force doesn't change a thing
# mdadm --assemble /dev/md126 /dev/sd[ab]3
mdadm: /dev/sdb3 is busy - skipping
No entanto, todos os volumes são desmontados e não há partições de disco montadas. Eu verifiquei novamente com fuser , mas a unidade especificada não está em uso.
O que poderia causar um erro desse tipo? Existe uma maneira de "desusar" a unidade?
Este ataque é montado com SSDs. Dois dos três SSDs estavam falhando (um após o outro, na verdade) por causa de Wear_Leveling_Count .
Então substituí um disco ( sda ) e copiei o segundo disco com falha com ddrescue para o novo.
Então, sabemos que temos sda , que é novo e tem o conteúdo de sdc . Gostaria de montar o RAID degradado e depois disso substituir sdc e iniciar uma reconstrução.
cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4] [linear] [multipath] [raid0] [raid1] [raid10]
md125 : inactive sdc4[2](S) sdb4[3](S)
477220864 blocks super 1.2
md126 : inactive sdc3[2](S) sdb3[3](S)
20955136 blocks super 1.2
-
mdadm --detail /dev/md*
/dev/md0:
Version :
Raid Level : raid0
Total Devices : 0
State : inactive
Number Major Minor RaidDevice
/dev/md125:
Version : 1.2
Raid Level : raid0
Total Devices : 2
Persistence : Superblock is persistent
State : inactive
Name : 163-172-108-110:2 (local to host 163-172-108-110)
UUID : 3c78263f:6baa0912:caa18c52:b9d80e7c
Events : 10392
Number Major Minor RaidDevice
- 8 20 - /dev/sdb4
- 8 36 - /dev/sdc4
/dev/md126:
Version : 1.2
Raid Level : raid0
Total Devices : 2
Persistence : Superblock is persistent
State : inactive
Name : 163-172-108-110:1 (local to host 163-172-108-110)
UUID : 82b97a85:9e2f9bf4:0ab3e92f:c2d082f3
Events : 1256
Number Major Minor RaidDevice
- 8 19 - /dev/sdb3
- 8 35 - /dev/sdc3
/dev/md127:
Version :
Raid Level : raid0
Total Devices : 0
State : inactive
Number Major Minor RaidDevice
-
mdadm --detail /dev/md*
/dev/md0:
Version :
Raid Level : raid0
Total Devices : 0
State : inactive
Number Major Minor RaidDevice
/dev/md125:
Version : 1.2
Raid Level : raid0
Total Devices : 2
Persistence : Superblock is persistent
State : inactive
Name : 163-172-108-110:2 (local to host 163-172-108-110)
UUID : 3c78263f:6baa0912:caa18c52:b9d80e7c
Events : 10392
Number Major Minor RaidDevice
- 8 20 - /dev/sdb4
- 8 36 - /dev/sdc4
/dev/md126:
Version : 1.2
Raid Level : raid0
Total Devices : 2
Persistence : Superblock is persistent
State : inactive
Name : 163-172-108-110:1 (local to host 163-172-108-110)
UUID : 82b97a85:9e2f9bf4:0ab3e92f:c2d082f3
Events : 1256
Number Major Minor RaidDevice
- 8 19 - /dev/sdb3
- 8 35 - /dev/sdc3
/dev/md127:
Version :
Raid Level : raid0
Total Devices : 0
State : inactive
Number Major Minor RaidDevice
root@163-172-108-110:/home/developer#
root@163-172-108-110:/home/developer# mdadm --examine /dev/sd*
/dev/sda:
MBR Magic : aa55
Partition[0] : 612352 sectors at 2048 (type fd)
Partition[1] : 1048576 sectors at 614400 (type 82)
Partition[2] : 20971520 sectors at 1662976 (type fd)
Partition[3] : 477483008 sectors at 22634496 (type fd)
/dev/sdb:
MBR Magic : aa55
Partition[0] : 612352 sectors at 2048 (type fd)
Partition[1] : 1048576 sectors at 614400 (type 82)
Partition[2] : 20971520 sectors at 1662976 (type fd)
Partition[3] : 477483008 sectors at 22634496 (type fd)
/dev/sdb1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : c59f1ae7:c2db40ca:f23c39c6:b8906d82
Name : 163-172-108-110:0 (local to host 163-172-108-110)
Creation Time : Wed Aug 30 10:50:38 2017
Raid Level : raid5
Raid Devices : 3
Avail Dev Size : 610304 (298.05 MiB 312.48 MB)
Array Size : 610304 (596.10 MiB 624.95 MB)
Data Offset : 2048 sectors
Super Offset : 8 sectors
Unused Space : before=1960 sectors, after=0 sectors
State : clean
Device UUID : f8b8f6d5:af13231e:df576ce8:dc0987ca
Update Time : Mon Jun 18 13:04:27 2018
Bad Block Log : 512 entries available at offset 72 sectors
Checksum : c0b350d8 - correct
Events : 148
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 1
Array State : .AA ('A' == active, '.' == missing, 'R' == replacing)
mdadm: No md superblock detected on /dev/sdb2.
/dev/sdb3:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : 82b97a85:9e2f9bf4:0ab3e92f:c2d082f3
Name : 163-172-108-110:1 (local to host 163-172-108-110)
Creation Time : Wed Aug 30 10:50:38 2017
Raid Level : raid5
Raid Devices : 3
Avail Dev Size : 20955136 (9.99 GiB 10.73 GB)
Array Size : 20955136 (19.98 GiB 21.46 GB)
Data Offset : 16384 sectors
Super Offset : 8 sectors
Unused Space : before=16296 sectors, after=0 sectors
State : active
Device UUID : 581e9da2:196f11b2:80814cca:000f1ce2
Update Time : Sun Jun 17 19:13:05 2018
Bad Block Log : 512 entries available at offset 72 sectors
Checksum : c0a9855d - correct
Events : 1256
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 1
Array State : .AA ('A' == active, '.' == missing, 'R' == replacing)
/dev/sdb4:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x1
Array UUID : 3c78263f:6baa0912:caa18c52:b9d80e7c
Name : 163-172-108-110:2 (local to host 163-172-108-110)
Creation Time : Wed Aug 30 10:50:38 2017
Raid Level : raid5
Raid Devices : 3
Avail Dev Size : 477220864 (227.56 GiB 244.34 GB)
Array Size : 477220864 (455.11 GiB 488.67 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262056 sectors, after=0 sectors
State : active
Device UUID : c2328796:4f6255c3:8d6f12b4:083f0dd5
Internal Bitmap : 8 sectors from superblock
Update Time : Sun Jun 17 19:13:04 2018
Bad Block Log : 512 entries available at offset 72 sectors
Checksum : 5b3fdf08 - correct
Events : 10392
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 1
Array State : .AA ('A' == active, '.' == missing, 'R' == replacing)
/dev/sdc:
MBR Magic : aa55
Partition[0] : 612352 sectors at 2048 (type fd)
Partition[1] : 1048576 sectors at 614400 (type 82)
Partition[2] : 20971520 sectors at 1662976 (type fd)
Partition[3] : 477483008 sectors at 22634496 (type fd)
/dev/sdc1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : c59f1ae7:c2db40ca:f23c39c6:b8906d82
Name : 163-172-108-110:0 (local to host 163-172-108-110)
Creation Time : Wed Aug 30 10:50:38 2017
Raid Level : raid5
Raid Devices : 3
Avail Dev Size : 610304 (298.05 MiB 312.48 MB)
Array Size : 610304 (596.10 MiB 624.95 MB)
Data Offset : 2048 sectors
Super Offset : 8 sectors
Unused Space : before=1960 sectors, after=0 sectors
State : clean
Device UUID : 9879accc:f903b32b:1bd6e67a:b1133812
Update Time : Mon Jun 18 13:04:27 2018
Bad Block Log : 512 entries available at offset 72 sectors
Checksum : 9f2489d1 - correct
Events : 148
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 2
Array State : .AA ('A' == active, '.' == missing, 'R' == replacing)
mdadm: No md superblock detected on /dev/sdc2.
/dev/sdc3:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : 82b97a85:9e2f9bf4:0ab3e92f:c2d082f3
Name : 163-172-108-110:1 (local to host 163-172-108-110)
Creation Time : Wed Aug 30 10:50:38 2017
Raid Level : raid5
Raid Devices : 3
Avail Dev Size : 20955136 (9.99 GiB 10.73 GB)
Array Size : 20955136 (19.98 GiB 21.46 GB)
Data Offset : 16384 sectors
Super Offset : 8 sectors
Unused Space : before=16296 sectors, after=0 sectors
State : active
Device UUID : 0c9c3d3d:03777e83:3990cfdd:3cc58aee
Update Time : Sun Jun 17 19:13:05 2018
Bad Block Log : 512 entries available at offset 72 sectors
Checksum : 4ca8cfef - correct
Events : 1256
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 2
Array State : .AA ('A' == active, '.' == missing, 'R' == replacing)
/dev/sdc4:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x1
Array UUID : 3c78263f:6baa0912:caa18c52:b9d80e7c
Name : 163-172-108-110:2 (local to host 163-172-108-110)
Creation Time : Wed Aug 30 10:50:38 2017
Raid Level : raid5
Raid Devices : 3
Avail Dev Size : 477220864 (227.56 GiB 244.34 GB)
Array Size : 477220864 (455.11 GiB 488.67 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262056 sectors, after=0 sectors
State : active
Device UUID : e547f2d6:631ac6b2:f89347d9:bd876af2
Internal Bitmap : 8 sectors from superblock
Update Time : Sun Jun 17 19:13:04 2018
Bad Block Log : 512 entries available at offset 72 sectors
Checksum : cdae195e - correct
Events : 10392
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 2
Array State : .AA ('A' == active, '.' == missing, 'R' == replacing)
Tags raid software-raid