Topic: Raid Problem

[ansentry]

I am running SME 7.4 - all patches up to date.

I received this email:

A DegradedArray event has been detected on md device /dev/md2.

I then  checked the "Manage disk redundancy" and got the following:

Current RAID Status:

Personalities : [raid1]
md2 : active raid1 hda2[0]
      390604288 blocks [2/1] [U_]

md1 : active raid1 hda1[0] hdb1[1]
      104320 blocks [2/2] [UU]

unused devices: <none>

Only some of the RAID devices are unclean.

Manual intervention may be required.

I went to this link http://wiki.contribs.org/Category:Howto and had a read on RAID and I found this section on failed RAID's

Make a note of the raid partition that has failed, shown by [_U]
In this case it is md2, the device being /dev/md2.

Mine does not show [_U] it shows [U_]

Do I still run;

Code: [Select]

# mdadm --add /dev/md2 /dev/hda2
Any advice would be appreciated.

[Franco]

mdadm --add /dev/md2 /dev/hdb2

[ansentry]

Thanks Franco, it is running now.

[ansentry]

Franco,

It has now finished and all appears OK, thank you for your advice.

[Franco]

My pleasure,

Code: [Select]

cat /proc/mdstatshould show you all good.

Thanks,

[ansentry]

Franco,

Yes it showed "all good"

[nefkho]

Hi, i got the same problem.
here is my cat /proc/mdstat

Personalities : [raid1]
md2 : active raid1 sdb2[1]
      156183808 blocks [2/1] [_U]

md1 : active raid1 sda1[0] sdb1[1]
      104320 blocks [2/2] [UU]

unused devices: <none>

but when i issue the mdadm --add /dev/md2 /dev/hda2
here is the result:

mdadm: cannot find /dev/hda2: No such file or directory

any one can help me?

thanks

[kryptos]

Hi, i got the same problem.
here is my cat /proc/mdstat

Personalities : [raid1]
md2 : active raid1 sdb2[1]
      156183808 blocks [2/1] [_U]

md1 : active raid1 sda1[0] sdb1[1]
      104320 blocks [2/2] [UU]

unused devices: <none>

but when i issue the mdadm --add /dev/md2 /dev/hda2
here is the result:

mdadm: cannot find /dev/hda2: No such file or directory

any one can help me?

thanks

Check your Harddisk settings it should not be hda2 as you are using sdb2.

Regards,
Rocel

[Franco]

 yours should be

Code: [Select]

mdadm --add /dev/md2 /dev/sda2

[CharlieBrady]

yours should be

Code: [Select]

mdadm --add /dev/md2 /dev/sda2

Only after identifying why the first hard drive was thrown out of the RAID array. If the drive is or might be faulty, it should be replaced.

[nefkho]

thanks,

rebuilding in progress now.