Koozali.org: home of the SME Server

RAID 1 Failure

daryl

RAID 1 Failure
« on: September 20, 2004, 09:13:53 PM »
I have searched here and found some conflicting information.  Below are the important parts from two emails on the failure.  The way I read it is hda2 partition started to fail in the first and then did so in the second.  Some of the documention I have read points me to hdb as being the bad drive.

Technical Details:
Personalities : [raid1]
read_ahead 1024 sectors
md2 : active raid1 hda3[0] hdb3[1]
      264960 blocks [2/2] [UU]
     
md1 : active raid1 hda2[0](F) hdb2[1]
      38708544 blocks [2/1] [_U]
     
md0 : active raid1 hda1[0] hdb1[1]
      104320 blocks [2/2] [UU]
     
unused devices: <none>

-------------------------------------

Technical Details:
Personalities : [raid1]
read_ahead 1024 sectors
md2 : active raid1 hda3[0] hdb3[1]
      264960 blocks [2/2] [UU]
     
md1 : active raid1 hdb2[1]
      38708544 blocks [2/1] [_U]
     
md0 : active raid1 hda1[0] hdb1[1]
      104320 blocks [2/2] [UU]
     
unused devices: <none>

Offline psoren

  • *
  • 371
  • +0/-0
Re: RAID 1 Failure
« Reply #1 on: September 21, 2004, 03:56:44 AM »
Quote from: "daryl"
I have searched here and found some conflicting information.  Below are the important parts from two emails on the failure.  The way I read it is hda2 partition started to fail in the first and then did so in the second.  Some of the documention I have read points me to hdb as being the bad drive.

Technical Details:
Personalities : [raid1]
read_ahead 1024 sectors
md2 : active raid1 hda3[0] hdb3[1]
      264960 blocks [2/2] [UU]
     
md1 : active raid1 hda2[0](F) hdb2[1]
      38708544 blocks [2/1] [_U]
     
md0 : active raid1 hda1[0] hdb1[1]
      104320 blocks [2/2] [UU]
     
unused devices: <none>

-------------------------------------

Technical Details:
Personalities : [raid1]
read_ahead 1024 sectors
md2 : active raid1 hda3[0] hdb3[1]
      264960 blocks [2/2] [UU]
     
md1 : active raid1 hdb2[1]
      38708544 blocks [2/1] [_U]
     
md0 : active raid1 hda1[0] hdb1[1]
      104320 blocks [2/2] [UU]
     
unused devices: <none>


"active raid1 hda2[0](F) hdb2[1]" means hda2 is dtarting to fail. (I guess that's what the F means)

"active raid1 hdb2[1]" means ACTIVE is hdb2, so hda2 is gone!

Another issue is, that you should have it as hda and hdc. One master disk on each controller. A controller can die too, and if it's the one with both disks then......

Per

onsy

RAID 1 Failure
« Reply #2 on: September 21, 2004, 11:02:14 AM »
Hello,

No conflict beetween the 2 parts you gave.

It seems your hda2 partition is out of sync in the mirror.
You can just try to force synchronisation or, if you think your hda disk is starting to play the woodywoodpecker, change it :-(
Bad to see it's your big partition being out of sync.