Only thing is, sdb1 says "AAA.AA", which is a bit weird, unless sdb1 is
the very last one, which is the last dot in AAA.A. of all the others.
If five drives all have almost identical event counts, I'd be inclined
to ddrescue the dodgy one (probably sdb1) and hope it all works out.
The alternative is to ddrescue both dodgy drives, and write the program
that marks blocks as dodgy. Then you can hope that a scan can rebuild
everything.
Cheers,
Wol
On 09/08/17 11:34, Joe Landman wrote:
Ok, you are missing 2 drives in a 6 drive raid. This is generally bad
news. Are you sure all your drives are accessible? Can you read
partition tables from each? If not, f2f hen a force won't likely do
anything.
Can you give context and logs entries on what happend to cause this?
Also do you have backups of the data... raid is not a backup itself ...
if need be, can you recover from a recent backup?
On August 8, 2017 3:39:46 PM Bryan Hepworth
<bryan.hepworth@xxxxxxxxxxxxxxx> wrote:
Hi all
I'd be grateful of another pair of eyes just to check and verify what
I'm thinking. I've had an array fail and I've checked the components
with the mdadm --examine command. Five out of the six event counts are
correct and I'm hoping I can get it to assemble with the force option: -
"mdadm --assemble --force /dev/mdX <list of devices>"
mdadm --assemble --force /dev/md0 /dev/sdd1 /dev/sdg1 /dev/sdf1
/dev/sde1 /dev/sdb1 /dev/sdc1
Output from --examine is as follows: -
[root@inscribe4 dev]# mdadm --examine /dev/sde1
/dev/sde1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x1
Array UUID : ace00fb5:8771d55a:cf36728b:ddc3ce89
Name : intermediate0
Creation Time : Tue Oct 15 21:03:50 2013
Raid Level : raid5
Raid Devices : 6
Avail Dev Size : 3906761858 (1862.89 GiB 2000.26 GB)
Array Size : 9766901760 (9314.44 GiB 10001.31 GB)
Used Dev Size : 3906760704 (1862.89 GiB 2000.26 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262064 sectors, after=1154 sectors
State : clean
Device UUID : 8d0b6c8e:0c526265:6ec0a71b:52a636ba
Internal Bitmap : 8 sectors from superblock
Update Time : Tue Aug 8 14:16:53 2017
Checksum : 44b7b461 - correct
Events : 119894
Layout : left-symmetric
Chunk Size : 512K
Device Role : spare
Array State : AAA.A. ('A' == active, '.' == missing, 'R' == replacing)
[root@inscribe4 dev]# mdadm --examine /dev/sdg1
/dev/sdg1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x1
Array UUID : ace00fb5:8771d55a:cf36728b:ddc3ce89
Name : intermediate0
Creation Time : Tue Oct 15 21:03:50 2013
Raid Level : raid5
Raid Devices : 6
Avail Dev Size : 3906761858 (1862.89 GiB 2000.26 GB)
Array Size : 9766901760 (9314.44 GiB 10001.31 GB)
Used Dev Size : 3906760704 (1862.89 GiB 2000.26 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262064 sectors, after=1154 sectors
State : clean
Device UUID : e238e74b:d40efc43:d34d876d:ca0700b0
Internal Bitmap : 8 sectors from superblock
Update Time : Tue Aug 8 14:16:53 2017
Checksum : 28758d54 - correct
Events : 119894
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 1
Array State : AAA.A. ('A' == active, '.' == missing, 'R' == replacing)
[root@inscribe4 dev]# mdadm --examine /dev/sdd1
/dev/sdd1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x1
Array UUID : ace00fb5:8771d55a:cf36728b:ddc3ce89
Name : intermediate0
Creation Time : Tue Oct 15 21:03:50 2013
Raid Level : raid5
Raid Devices : 6
Avail Dev Size : 3906761858 (1862.89 GiB 2000.26 GB)
Array Size : 9766901760 (9314.44 GiB 10001.31 GB)
Used Dev Size : 3906760704 (1862.89 GiB 2000.26 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262064 sectors, after=1154 sectors
State : clean
Device UUID : 1732f121:f6f0df09:fafd2411:7c78ce00
Internal Bitmap : 8 sectors from superblock
Update Time : Tue Aug 8 14:16:53 2017
Checksum : b8cf8981 - correct
Events : 119894
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 0
Array State : AAA.A. ('A' == active, '.' == missing, 'R' == replacing)
[root@inscribe4 dev]# mdadm --examine /dev/sdf1
/dev/sdf1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x1
Array UUID : ace00fb5:8771d55a:cf36728b:ddc3ce89
Name : intermediate0
Creation Time : Tue Oct 15 21:03:50 2013
Raid Level : raid5
Raid Devices : 6
Avail Dev Size : 3906761858 (1862.89 GiB 2000.26 GB)
Array Size : 9766901760 (9314.44 GiB 10001.31 GB)
Used Dev Size : 3906760704 (1862.89 GiB 2000.26 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262064 sectors, after=1154 sectors
State : clean
Device UUID : 3d414ad2:4310c1f9:98f50214:3e9b1e33
Internal Bitmap : 8 sectors from superblock
Update Time : Tue Aug 8 14:16:53 2017
Checksum : 8e37d25d - correct
Events : 119894
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 2
Array State : AAA.A. ('A' == active, '.' == missing, 'R' == replacing)
[root@inscribe4 dev]# mdadm --examine /dev/sdb1
/dev/sdb1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x1
Array UUID : ace00fb5:8771d55a:cf36728b:ddc3ce89
Name : intermediate0
Creation Time : Tue Oct 15 21:03:50 2013
Raid Level : raid5
Raid Devices : 6
Avail Dev Size : 3906761858 (1862.89 GiB 2000.26 GB)
Array Size : 9766901760 (9314.44 GiB 10001.31 GB)
Used Dev Size : 3906760704 (1862.89 GiB 2000.26 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262064 sectors, after=1154 sectors
State : clean
Device UUID : a84263cd:75ce20b9:a3a72a1c:b18b2457
Internal Bitmap : 8 sectors from superblock
Update Time : Mon Jul 31 22:50:37 2017
Checksum : 74d320d6 - correct
Events : 119879
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 5
Array State : AAA.AA ('A' == active, '.' == missing, 'R' == replacing)
[root@inscribe4 dev]# mdadm --examine /dev/sdc1
/dev/sdc1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x1
Array UUID : ace00fb5:8771d55a:cf36728b:ddc3ce89
Name : intermediate0
Creation Time : Tue Oct 15 21:03:50 2013
Raid Level : raid5
Raid Devices : 6
Avail Dev Size : 3906761858 (1862.89 GiB 2000.26 GB)
Array Size : 9766901760 (9314.44 GiB 10001.31 GB)
Used Dev Size : 3906760704 (1862.89 GiB 2000.26 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262064 sectors, after=1154 sectors
State : clean
Device UUID : be5ec20e:249645e5:22aeca25:a60c7599
Internal Bitmap : 8 sectors from superblock
Update Time : Tue Aug 8 14:16:53 2017
Checksum : 2e529fae - correct
Events : 119894
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 4
Array State : AAA.A. ('A' == active, '.' == missing, 'R' == replacing)
Thanks
Bryan
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