Inactive raid?

CJRamze · 31. Oktober 2013

Hi Guys
I've had my Raid 5 setup running for around a week now, everythings running as sweet as a nut and I've had no issues.
Until tonight.

First I noticed my RasPi wouldn't connect to any of the films.
Had a look in OMV shares are there, Thats weird.

So I decided to reboot the machine.
Tried to mount the shares on my linux laptop, Permission errors... Weird.

Deleted the shares in NFS and SMB
Clicked the share in SHARED FOLDERS, that UUID looks wrong, Checked raid management... Gone.
Checked the drives, all drives are showing however in raid managment its totally blank

I saw this command to show your MD, and sure enough MD127 there it is.

Code

root@OMV:/dev# cat /proc/mdstat
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] 
md127 : inactive sdd[0](S) sdc[4](S) sdb[3](S) sdf[2](S) sde[1](S)
      9767567800 blocks super 1.2

unused devices: <none>
root@OMV:/dev#

Inactive? What? Why and how can I get it back. Otherwise I just lost 4TB of data. Nothing hugely important, but not stuff I want to download again!

Can anyone help?

CJRamze · 1. November 2013

Just an update, I did a Dmesg yesterday that pulled errors mentioning RAID from log files.

It mentioned the raid had failed

Code

root@OMV:~# dmesg | grep raid
[    6.640234] md: raid0 personality registered for level 0
[    6.642519] md: raid1 personality registered for level 1
[    6.729011] raid6: int64x1   3005 MB/s
[    6.797010] raid6: int64x2   3863 MB/s
[    6.865013] raid6: int64x4   2995 MB/s
[    6.933013] raid6: int64x8   2674 MB/s
[    7.001033] raid6: sse2x1    1558 MB/s
[    7.069023] raid6: sse2x2    2462 MB/s
[    7.137013] raid6: sse2x4    3620 MB/s
[    7.137014] raid6: using algorithm sse2x4 (3620 MB/s)
[    7.140648] md: raid6 personality registered for level 6
[    7.140651] md: raid5 personality registered for level 5
[    7.140652] md: raid4 personality registered for level 4
[    7.144806] md: raid10 personality registered for level 10
[    7.196976] raid5: device sdd operational as raid disk 0
[    7.196979] raid5: device sdc operational as raid disk 4
[    7.196980] raid5: device sdb operational as raid disk 3
[    7.197384] raid5: allocated 5334kB for md127
[    7.197429] raid5: not enough operational devices for md127 (2/5 failed)
[    7.197885] raid5: failed to run raid set md127

Alles anzeigen

Edit:
I get the feeling that my dogs may have run into the side of the server and knocked something loose?
I powered down and checked all connectors, Powered back up.

CJRamze · 1. November 2013

Anyone out there? I'm feeling pretty desperate for help. Even tried #debian but they basically told me where to stick it.
Feel like I may just have to try a bunch of random commands I've found on the net.
Dont know what they do but I'm stuck!

CJRamze · 1. November 2013

Lock the topic. Fixed.
Will post my fix now.

Code

root@OMV:~# mdadm --assemble /dev/md127 /dev/sd[bcdef] --verbose --force
mdadm: looking for devices for /dev/md127
mdadm: cannot open device /dev/sdb: Device or resource busy
mdadm: /dev/sdb has no superblock - assembly aborted
root@OMV:~# mdadm --stop /dev/md127
mdadm: stopped /dev/md127
root@OMV:~# mdadm --assemble /dev/md127 /dev/sd[bcdef] --verbose --force
mdadm: looking for devices for /dev/md127
mdadm: /dev/sdb is identified as a member of /dev/md127, slot 3.
mdadm: /dev/sdc is identified as a member of /dev/md127, slot 4.
mdadm: /dev/sdd is identified as a member of /dev/md127, slot 0.
mdadm: /dev/sde is identified as a member of /dev/md127, slot 1.
mdadm: /dev/sdf is identified as a member of /dev/md127, slot 2.
mdadm: forcing event count in /dev/sde(1) from 25228 upto 25312
mdadm: forcing event count in /dev/sdf(2) from 25228 upto 25312
mdadm: clearing FAULTY flag for device 3 in /dev/md127 for /dev/sde
mdadm: clearing FAULTY flag for device 4 in /dev/md127 for /dev/sdf
mdadm: added /dev/sde to /dev/md127 as 1
mdadm: added /dev/sdf to /dev/md127 as 2
mdadm: added /dev/sdb to /dev/md127 as 3
mdadm: added /dev/sdc to /dev/md127 as 4
mdadm: added /dev/sdd to /dev/md127 as 0
mdadm: /dev/md127 has been started with 5 drives.
root@OMV:~#

Alles anzeigen

I logged back into Open Media Vault... and there is the raid... and there is the data.
Overjoyed.

Jetzt mitmachen!