Hi

I am very new to linux. I recently go a HP Proliant N54L and installed Openmediavault on it. I have got two segate hard drives and have set them up as raid 1. Since setting up raid 1 have been getting following notifications

This is an automatically generated mail message from mdadm
running on FINGROWSERVER

A DegradedArray event had been detected on md device /dev/md126.

Faithfully yours, etc.

P.S. The /proc/mdstat file currently contains the following:

Personalities : [raid1]
md126 : active (auto-read-only) raid1 sdc[1]
2930265424 blocks super 1.2 [2/1] [_U]

md127 : active raid1 sdb[0]
2930265424 blocks super 1.2 [2/1] [U_]

unused devices: <none>

I dont beleive that there is any problem with the disk as these are new. Can someone please help. Really appreciate some help with this.

Regards

asim1903

As /proc/mdstat clearly shows, the md driver seems to think that you now have two RAID 1 arrays, /dev/md127 and /dev/md126, each with one working and one failed drive.

I assume both drives are supposed to belong to the same array? In that case, delete /dev/md126, erase the metadata from /dev/sdc1, and add it back to /dev/md127.

Hi Ser Olmy

Thanks a lot for your reply. I am really not sure how do I do this. Can you please provide some instructions on how to achieve this.

Really appreciate your help.

Regards

Asim

---------- Post added 09-21-14 at 10:27 PM ----------

Hi Ser Olmy

Thanks a lot for your reply. I am really not sure how do I do this. Can you please provide some instructions on how to achieve this.

Really appreciate your help.

Regards

Asim

I'm not familiar with OpenMediaVault, but I would expect it to have a GUI where you can do stuff like deleting arrays and adding spare drives to existing arrays.

How did you configure the RAID 1 array in the first place?

Hi

Unfortunately with the GUI, I am unable to delete the raid. Will need to use command line to fix this. Is it possible to do this from command line.

Regards

Asim

Assuming /dev/md126 is the array you want to delete, this command will stop the array and release /dev/sdc:To make sure the md driver doesn't recreate the unwanted array, delete the superblock on /dev/sdc with:Depending on how the distribution is configured, you may have to run these commands via sudo.

You should then be able to add /dev/sdc to the remaining array from the GUI.

1 members found this post helpful.

Hi Ser Olmy


Thanks a lot for your help. That solved the problem.

Regards

Asim