I have tried a --assemble force..
the result was it could not because the devices said it was ignored.
root@BorgCUBE:/mnt/datastore/wilsonjonathan# mdadm --assemble
-v /dev/md5
mdadm: looking for devices for /dev/md5
mdadm: no RAID superblock on /dev/md/7
mdadm: no RAID superblock on /dev/md6
mdadm: no RAID superblock on /dev/md/4
mdadm: no RAID superblock on /dev/md/3
mdadm: no RAID superblock on /dev/md/2
mdadm: no RAID superblock on /dev/md/1
mdadm: no RAID superblock on /dev/md/0
mdadm: /dev/sdh7 has wrong uuid.
mdadm: /dev/sdh6 has wrong uuid.
mdadm: /dev/sdh5 has wrong uuid.
mdadm: no RAID superblock on /dev/sdh4
mdadm: /dev/sdh3 has wrong uuid.
mdadm: /dev/sdh2 has wrong uuid.
mdadm: no RAID superblock on /dev/sdh1
mdadm: no RAID superblock on /dev/sdh
mdadm: /dev/sdg7 has wrong uuid.
mdadm: /dev/sdg6 has wrong uuid.
mdadm: /dev/sdg5 has wrong uuid.
mdadm: no RAID superblock on /dev/sdg4
mdadm: /dev/sdg3 has wrong uuid.
mdadm: /dev/sdg2 has wrong uuid.
mdadm: no RAID superblock on /dev/sdg1
mdadm: no RAID superblock on /dev/sdg
mdadm: /dev/sdf1 has wrong uuid.
mdadm: no RAID superblock on /dev/sdf
mdadm: /dev/sde1 has wrong uuid.
mdadm: no RAID superblock on /dev/sde
mdadm: /dev/sdd1 has wrong uuid.
mdadm: no RAID superblock on /dev/sdd
mdadm: no RAID superblock on /dev/sdc
mdadm: /dev/sdb5 has wrong uuid.
mdadm: /dev/sdb4 has wrong uuid.
mdadm: /dev/sdb3 has wrong uuid.
mdadm: /dev/sdb2 has wrong uuid.
mdadm: no RAID superblock on /dev/sdb1
mdadm: no RAID superblock on /dev/sdb
mdadm: /dev/sda1 has wrong uuid.
mdadm: no RAID superblock on /dev/sda
mdadm: /dev/sdf6 is identified as a member of /dev/md5, slot 2.
mdadm: /dev/sde6 is identified as a member of /dev/md5, slot 1.
mdadm: /dev/sdd6 is identified as a member of /dev/md5, slot 0.
mdadm: /dev/sdb6 is identified as a member of /dev/md5, slot 4.
mdadm: /dev/sda6 is identified as a member of /dev/md5, slot 3.
mdadm: ignoring /dev/sde6 as it reports /dev/sdf6 as failed
mdadm: ignoring /dev/sda6 as it reports /dev/sdf6 as failed
mdadm: ignoring /dev/sdb6 as it reports /dev/sdf6 as failed
mdadm: no uptodate device for slot 1 of /dev/md5
mdadm: added /dev/sdf6 to /dev/md5 as 2
mdadm: no uptodate device for slot 3 of /dev/md5
mdadm: no uptodate device for slot 4 of /dev/md5
mdadm: no uptodate device for slot 5 of /dev/md5
mdadm: added /dev/sdd6 to /dev/md5 as 0
mdadm: /dev/md5 assembled from 2 drives - not enough to start the array.
root@BorgCUBE:/mnt/datastore/wilsonjonathan# mdadm --stop /dev/md5
So i checked count:-
root@BorgCUBE:/mnt/datastore/wilsonjonathan# mdadm
--examine /dev/sd[a-f]6 | egrep 'Event|/dev/sd'
/dev/sda6:
Events : 260321
/dev/sdb6:
Events : 260321
/dev/sdd6:
Events : 260321
/dev/sde6:
Events : 260321
/dev/sdf6:
Events : 260321
My full scan of the partiotions was:-
/dev/sda6:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x1
Array UUID : 9ff95b8b:ba34ad95:aa7cb806:169246f2
Name : PartedMagic:6
Creation Time : Fri Nov 25 16:30:19 2011
Raid Level : raid6
Raid Devices : 6
Avail Dev Size : 1833569679 (874.31 GiB 938.79 GB)
Array Size : 3667138560 (3497.26 GiB 3755.15 GB)
Used Dev Size : 1833569280 (874.31 GiB 938.79 GB)
Data Offset : 2048 sectors
Super Offset : 8 sectors
State : active
Device UUID : f773d872:8237b0f7:1a8fb43e:545ef37d
Internal Bitmap : 8 sectors from superblock
Update Time : Wed Dec 4 23:07:34 2013
Checksum : 75d8e87e - correct
Events : 260321
Layout : left-symmetric
Chunk Size : 64K
Device Role : Active device 3
Array State : AA.AA. ('A' == active, '.' == missing)
/dev/sdb6:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x1
Array UUID : 9ff95b8b:ba34ad95:aa7cb806:169246f2
Name : PartedMagic:6
Creation Time : Fri Nov 25 16:30:19 2011
Raid Level : raid6
Raid Devices : 6
Avail Dev Size : 1833569287 (874.31 GiB 938.79 GB)
Array Size : 3667138560 (3497.26 GiB 3755.15 GB)
Used Dev Size : 1833569280 (874.31 GiB 938.79 GB)
Data Offset : 1928 sectors
Super Offset : 8 sectors
State : clean
Device UUID : dbda8da3:0d5e0968:e732a312:88a04c2a
Internal Bitmap : 8 sectors from superblock
Update Time : Wed Dec 4 23:15:16 2013
Checksum : 97305bb9 - correct
Events : 260321
Layout : left-symmetric
Chunk Size : 64K
Device Role : Active device 4
Array State : AA..A. ('A' == active, '.' == missing)
/dev/sdd6:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x1
Array UUID : 9ff95b8b:ba34ad95:aa7cb806:169246f2
Name : PartedMagic:6
Creation Time : Fri Nov 25 16:30:19 2011
Raid Level : raid6
Raid Devices : 6
Avail Dev Size : 1833569679 (874.31 GiB 938.79 GB)
Array Size : 3667138560 (3497.26 GiB 3755.15 GB)
Used Dev Size : 1833569280 (874.31 GiB 938.79 GB)
Data Offset : 2048 sectors
Super Offset : 8 sectors
State : clean
Device UUID : b451254c:dbc5f0fe:5e182208:6bd93c2c
Internal Bitmap : 8 sectors from superblock
Update Time : Wed Dec 4 23:15:16 2013
Checksum : ce1c5ac1 - correct
Events : 260321
Layout : left-symmetric
Chunk Size : 64K
Device Role : Active device 0
Array State : AAAAA. ('A' == active, '.' == missing)
/dev/sde6:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x1
Array UUID : 9ff95b8b:ba34ad95:aa7cb806:169246f2
Name : PartedMagic:6
Creation Time : Fri Nov 25 16:30:19 2011
Raid Level : raid6
Raid Devices : 6
Avail Dev Size : 1833569679 (874.31 GiB 938.79 GB)
Array Size : 3667138560 (3497.26 GiB 3755.15 GB)
Used Dev Size : 1833569280 (874.31 GiB 938.79 GB)
Data Offset : 2048 sectors
Super Offset : 8 sectors
State : clean
Device UUID : c0200a09:fac761e5:43a54346:34597026
Internal Bitmap : 8 sectors from superblock
Update Time : Wed Dec 4 23:15:16 2013
Checksum : a9c9388b - correct
Events : 260321
Layout : left-symmetric
Chunk Size : 64K
Device Role : Active device 1
Array State : AA..A. ('A' == active, '.' == missing)
/dev/sdf6:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x1
Array UUID : 9ff95b8b:ba34ad95:aa7cb806:169246f2
Name : PartedMagic:6
Creation Time : Fri Nov 25 16:30:19 2011
Raid Level : raid6
Raid Devices : 6
Avail Dev Size : 1833569679 (874.31 GiB 938.79 GB)
Array Size : 3667138560 (3497.26 GiB 3755.15 GB)
Used Dev Size : 1833569280 (874.31 GiB 938.79 GB)
Data Offset : 2048 sectors
Super Offset : 8 sectors
State : active
Device UUID : 19b46e87:20182485:2f386b4e:b7f52203
Internal Bitmap : 8 sectors from superblock
Update Time : Wed Dec 4 23:05:48 2013
Checksum : acc8494b - correct
Events : 260321
Layout : left-symmetric
Chunk Size : 64K
Device Role : Active device 2
Array State : AAAAA. ('A' == active, '.' == missing)
I tried to do a force create:-
root@BorgCUBE:/mnt/datastore/wilsonjonathan# mdadm --create
--assume-clean --level=6 --raid-devices=6 /dev/md5 /dev/sdd6 /dev/sde6
missing /dev/sdf6 /dev/sda6 /dev/sdb6
mdadm: /dev/sdd6 appears to be part of a raid array:
level=raid6 devices=6 ctime=Fri Nov 25 16:30:19 2011
mdadm: /dev/sde6 appears to be part of a raid array:
level=raid6 devices=6 ctime=Fri Nov 25 16:30:19 2011
mdadm: /dev/sdf6 appears to be part of a raid array:
level=raid6 devices=6 ctime=Fri Nov 25 16:30:19 2011
mdadm: /dev/sda6 appears to be part of a raid array:
level=raid6 devices=6 ctime=Fri Nov 25 16:30:19 2011
mdadm: /dev/sdb6 appears to be part of a raid array:
level=raid6 devices=6 ctime=Fri Nov 25 16:30:19 2011
Continue creating array? y
mdadm: Defaulting to version 1.2 metadata
mdadm: array /dev/md5 started.
root@BorgCUBE:/mnt/datastore/wilsonjonathan# mdadm --stop /dev/md5
but when I looked at it, it was wrongly partitioned, so stopped it...
So tried again, with a different (valid) chunk...
root@BorgCUBE:/mnt/datastore/wilsonjonathan# mdadm --create
--assume-clean --level=6 --raid-devices=6
--chunk=64 /dev/md5 /dev/sdd6 /dev/sde6
missing /dev/sdf6 /dev/sda6 /dev/sdb6
mdadm: /dev/sdd6 appears to be part of a raid array:
level=raid6 devices=6 ctime=Wed Dec 4 23:59:23 2013
mdadm: /dev/sde6 appears to be part of a raid array:
level=raid6 devices=6 ctime=Wed Dec 4 23:59:23 2013
mdadm: /dev/sdf6 appears to be part of a raid array:
level=raid6 devices=6 ctime=Wed Dec 4 23:59:23 2013
mdadm: /dev/sda6 appears to be part of a raid array:
level=raid6 devices=6 ctime=Wed Dec 4 23:59:23 2013
mdadm: /dev/sdb6 appears to be part of a raid array:
level=raid6 devices=6 ctime=Wed Dec 4 23:59:23 2013
Continue creating array? y
mdadm: Defaulting to version 1.2 metadata
mdadm: array /dev/md5 started.
root@BorgCUBE:/mnt/datastore/wilsonjonathan# mdadm --stop /dev/md5
but still the partition was all wrong... it should be a single
partition, but its showing multiple partitions... and is
reporting /dev/md5p3 "warning miss aligned"
I think I should, and have, stop doing anything else, till I have some
help :-/
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