Hello there.
I did something wrong.
I tried to get a disk out of a RAID5 with 8 hdds (4TB) to get a Hotspare
to change to RAID6 afterwards.
The RAID was clean and not rebuilding before I started.
The partition was only 11TB big. Not yet resized, because not created
with 64Bit, which I wanted to do afterwards.
Therefore I issued the following commands:
mdadm --grow -n7 /dev/md1 <-- just to get the size for the next command.
mdadm --grow /dev/md1 --array-size 23441292288
mdadm --grow -n7 /dev/md1 --backup-file /var/backups/mdadm.backup
The RAID /dev/md1 is mounted on /srv, so the backupfile is safe.
After a some time, someone told me, that seafile does not work. Since I
was in a hurry, I just rebootet the server and forgot the RAID rebuild.
The server came up again, but without /dev/md1.
I had made a Backup, which is 2 days old. Not so bad, because I have the
seafile data on several computers. But to get the RAID back to work
would be better.
How do I restart the rebuild process with the backup-file?
This is what I get in the console:
root@s10:~# cat /proc/mdstat
Personalities :
md1 : inactive sdh1[0](S) sda1[5](S) sdb1[6](S) sdc1[7](S) sdd1[8](S)
sdf1[4](S) sde1[2](S) sdg1[1](S)
31255059140 blocks super 1.2
unused devices: <none>
root@s10:~# mdadm -A --scan --verbose
mdadm: looking for devices for further assembly
mdadm: /dev/sdg1 is busy - skipping
mdadm: Cannot assemble mbr metadata on /dev/sdg
mdadm: /dev/sdd1 is busy - skipping
mdadm: Cannot assemble mbr metadata on /dev/sdd
mdadm: /dev/sdc1 is busy - skipping
mdadm: Cannot assemble mbr metadata on /dev/sdc
mdadm: /dev/sda1 is busy - skipping
mdadm: Cannot assemble mbr metadata on /dev/sda
mdadm: /dev/sdb1 is busy - skipping
mdadm: Cannot assemble mbr metadata on /dev/sdb
mdadm: /dev/sdf1 is busy - skipping
mdadm: Cannot assemble mbr metadata on /dev/sdf
mdadm: /dev/sdh1 is busy - skipping
mdadm: Cannot assemble mbr metadata on /dev/sdh
mdadm: /dev/sde1 is busy - skipping
mdadm: Cannot assemble mbr metadata on /dev/sde
mdadm: no recogniseable superblock on /dev/sdj5
mdadm: Cannot assemble mbr metadata on /dev/sdj2
mdadm: no recogniseable superblock on /dev/sdj1
mdadm: Cannot assemble mbr metadata on /dev/sdj
mdadm: no recogniseable superblock on /dev/sdi1
mdadm: Cannot assemble mbr metadata on /dev/sdi
mdadm: No arrays found in config file or automatically
root@s10:~# mdadm --examine --scan
ARRAY /dev/md/1 metadata=1.2 UUID=48f60e15:900f47cc:6c5f42b1:82f01530
name=s10:1
root@s10:~# mdadm --examine /dev/sd*
/dev/sda:
MBR Magic : aa55
Partition[0] : 4294967295 sectors at 1 (type ee)
/dev/sda1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x4
Array UUID : 48f60e15:900f47cc:6c5f42b1:82f01530
Name : s10:1 (local to host s10)
Creation Time : Fri Sep 16 06:59:32 2016
Raid Level : raid5
Raid Devices : 7
Avail Dev Size : 7813764785 (3725.89 GiB 4000.65 GB)
Array Size : 23441292288 (22355.36 GiB 24003.88 GB)
Used Dev Size : 7813764096 (3725.89 GiB 4000.65 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262064 sectors, after=689 sectors
State : clean
Device UUID : 9fe5980b:be2beb6b:59537ad1:90091564
Reshape pos'n : 22485531648 (21443.87 GiB 23025.18 GB)
Delta Devices : -1 (8->7)
Update Time : Thu Sep 22 14:23:54 2016
Checksum : 1ea679f3 - correct
Events : 180344
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 7
Array State : AAAAAAAA ('A' == active, '.' == missing, 'R' == replacing)
/dev/sdb:
MBR Magic : aa55
Partition[0] : 4294967295 sectors at 1 (type ee)
/dev/sdb1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x4
Array UUID : 48f60e15:900f47cc:6c5f42b1:82f01530
Name : s10:1 (local to host s10)
Creation Time : Fri Sep 16 06:59:32 2016
Raid Level : raid5
Raid Devices : 7
Avail Dev Size : 7813764785 (3725.89 GiB 4000.65 GB)
Array Size : 23441292288 (22355.36 GiB 24003.88 GB)
Used Dev Size : 7813764096 (3725.89 GiB 4000.65 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262064 sectors, after=689 sectors
State : clean
Device UUID : 370c5540:2d3bdd3e:40a36449:b82309a8
Reshape pos'n : 22485531648 (21443.87 GiB 23025.18 GB)
Delta Devices : -1 (8->7)
Update Time : Thu Sep 22 14:23:54 2016
Checksum : e2331a09 - correct
Events : 180344
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 6
Array State : AAAAAAAA ('A' == active, '.' == missing, 'R' == replacing)
/dev/sdc:
MBR Magic : aa55
Partition[0] : 4294967295 sectors at 1 (type ee)
/dev/sdc1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x4
Array UUID : 48f60e15:900f47cc:6c5f42b1:82f01530
Name : s10:1 (local to host s10)
Creation Time : Fri Sep 16 06:59:32 2016
Raid Level : raid5
Raid Devices : 7
Avail Dev Size : 7813764785 (3725.89 GiB 4000.65 GB)
Array Size : 23441292288 (22355.36 GiB 24003.88 GB)
Used Dev Size : 7813764096 (3725.89 GiB 4000.65 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262064 sectors, after=689 sectors
State : clean
Device UUID : a9e8caf9:4c70d937:50e55bdf:b736cb97
Reshape pos'n : 22485531648 (21443.87 GiB 23025.18 GB)
Delta Devices : -1 (8->7)
Update Time : Thu Sep 22 14:23:54 2016
Checksum : 1a5e80ac - correct
Events : 180344
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 5
Array State : AAAAAAAA ('A' == active, '.' == missing, 'R' == replacing)
/dev/sdd:
MBR Magic : aa55
Partition[0] : 4294967295 sectors at 1 (type ee)
/dev/sdd1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x4
Array UUID : 48f60e15:900f47cc:6c5f42b1:82f01530
Name : s10:1 (local to host s10)
Creation Time : Fri Sep 16 06:59:32 2016
Raid Level : raid5
Raid Devices : 7
Avail Dev Size : 7813764785 (3725.89 GiB 4000.65 GB)
Array Size : 23441292288 (22355.36 GiB 24003.88 GB)
Used Dev Size : 7813764096 (3725.89 GiB 4000.65 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262064 sectors, after=689 sectors
State : clean
Device UUID : 50a6466d:057b9171:22865989:cabb59ce
Reshape pos'n : 22485531648 (21443.87 GiB 23025.18 GB)
Delta Devices : -1 (8->7)
Update Time : Thu Sep 22 14:23:54 2016
Checksum : a81e6ef1 - correct
Events : 180344
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 4
Array State : AAAAAAAA ('A' == active, '.' == missing, 'R' == replacing)
/dev/sde:
MBR Magic : aa55
Partition[0] : 4294967295 sectors at 1 (type ee)
/dev/sde1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x4
Array UUID : 48f60e15:900f47cc:6c5f42b1:82f01530
Name : s10:1 (local to host s10)
Creation Time : Fri Sep 16 06:59:32 2016
Raid Level : raid5
Raid Devices : 7
Avail Dev Size : 7813764785 (3725.89 GiB 4000.65 GB)
Array Size : 23441292288 (22355.36 GiB 24003.88 GB)
Used Dev Size : 7813764096 (3725.89 GiB 4000.65 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262064 sectors, after=689 sectors
State : clean
Device UUID : 1fd7fdde:3220d053:1cad772f:508ed8a7
Reshape pos'n : 22485531648 (21443.87 GiB 23025.18 GB)
Delta Devices : -1 (8->7)
Update Time : Thu Sep 22 14:23:54 2016
Checksum : 7bb13e67 - correct
Events : 180344
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 2
Array State : AAAAAAAA ('A' == active, '.' == missing, 'R' == replacing)
/dev/sdf:
MBR Magic : aa55
Partition[0] : 4294967295 sectors at 1 (type ee)
/dev/sdf1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x4
Array UUID : 48f60e15:900f47cc:6c5f42b1:82f01530
Name : s10:1 (local to host s10)
Creation Time : Fri Sep 16 06:59:32 2016
Raid Level : raid5
Raid Devices : 7
Avail Dev Size : 7813764785 (3725.89 GiB 4000.65 GB)
Array Size : 23441292288 (22355.36 GiB 24003.88 GB)
Used Dev Size : 7813764096 (3725.89 GiB 4000.65 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262064 sectors, after=689 sectors
State : clean
Device UUID : b2788315:a75fec1f:1d2681ee:2bba1be7
Reshape pos'n : 22485531648 (21443.87 GiB 23025.18 GB)
Delta Devices : -1 (8->7)
Update Time : Thu Sep 22 14:23:54 2016
Checksum : 7c9fc44d - correct
Events : 180344
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 3
Array State : AAAAAAAA ('A' == active, '.' == missing, 'R' == replacing)
/dev/sdg:
MBR Magic : aa55
Partition[0] : 4294967295 sectors at 1 (type ee)
/dev/sdg1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x4
Array UUID : 48f60e15:900f47cc:6c5f42b1:82f01530
Name : s10:1 (local to host s10)
Creation Time : Fri Sep 16 06:59:32 2016
Raid Level : raid5
Raid Devices : 7
Avail Dev Size : 7813764785 (3725.89 GiB 4000.65 GB)
Array Size : 23441292288 (22355.36 GiB 24003.88 GB)
Used Dev Size : 7813764096 (3725.89 GiB 4000.65 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262064 sectors, after=689 sectors
State : clean
Device UUID : 4e7223d6:4416983d:7812788b:a2114dec
Reshape pos'n : 22485531648 (21443.87 GiB 23025.18 GB)
Delta Devices : -1 (8->7)
Update Time : Thu Sep 22 14:23:54 2016
Checksum : fd13b855 - correct
Events : 180344
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 1
Array State : AAAAAAAA ('A' == active, '.' == missing, 'R' == replacing)
/dev/sdh:
MBR Magic : aa55
Partition[0] : 4294967295 sectors at 1 (type ee)
/dev/sdh1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x4
Array UUID : 48f60e15:900f47cc:6c5f42b1:82f01530
Name : s10:1 (local to host s10)
Creation Time : Fri Sep 16 06:59:32 2016
Raid Level : raid5
Raid Devices : 7
Avail Dev Size : 7813764785 (3725.89 GiB 4000.65 GB)
Array Size : 23441292288 (22355.36 GiB 24003.88 GB)
Used Dev Size : 7813764096 (3725.89 GiB 4000.65 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262064 sectors, after=689 sectors
State : clean
Device UUID : c1226e5c:4145cbcf:0bbe6160:4e0da07b
Reshape pos'n : 22485531648 (21443.87 GiB 23025.18 GB)
Delta Devices : -1 (8->7)
Update Time : Thu Sep 22 14:23:54 2016
Checksum : 79ce3f03 - correct
Events : 180344
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 0
Array State : AAAAAAAA ('A' == active, '.' == missing, 'R' == replacing)
/dev/sdi:
MBR Magic : aa55
Partition[0] : 500109312 sectors at 2048 (type 83)
mdadm: No md superblock detected on /dev/sdi1.
/dev/sdj:
MBR Magic : aa55
Partition[0] : 56143872 sectors at 2048 (type 83)
Partition[1] : 2478082 sectors at 56147966 (type 05)
mdadm: No md superblock detected on /dev/sdj1.
/dev/sdj2:
MBR Magic : aa55
Partition[0] : 2478080 sectors at 2 (type 82)
mdadm: No md superblock detected on /dev/sdj5.
root@s10:~# mdadm --detail /dev/md1
/dev/md1:
Version : 1.2
Raid Level : raid0
Total Devices : 8
Persistence : Superblock is persistent
State : inactive
Delta Devices : -1, (1->0)
New Level : raid5
New Layout : left-symmetric
New Chunksize : 512K
Name : s10:1 (local to host s10)
UUID : 48f60e15:900f47cc:6c5f42b1:82f01530
Events : 180344
Number Major Minor RaidDevice
- 8 1 - /dev/sda1
- 8 17 - /dev/sdb1
- 8 33 - /dev/sdc1
- 8 49 - /dev/sdd1
- 8 65 - /dev/sde1
- 8 81 - /dev/sdf1
- 8 97 - /dev/sdg1
- 8 113 - /dev/sdh1
--
Mit freundlichem Gruß,
Axel Spallek
Dipl.-Ing. FH IE
Hochdorfer Straße 34
88477 Schönebürg
Mobil: 01577 7929886
E-Mail: axel@xxxxxxxxxxx
Bankverbindung:
Volksbank Schwendi
IBAN: DE20654913200095195009
BIC: GENODES1VBL
Steuernummer: 5438000091
UST.-ID.: DE290536647
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