[Lustre-discuss] how to replace a bad OST.

[Mailer PH]

I run into similar problem few weeks ago .

You need to run :
tunefs.lustre --writeconf /dev/.............

On MDT/MGS after unmounting it , maybbe there is another way to do that without unmounting MDT/MGS but im not sure .

Cheers .


  ----- Original Message ----- 
  From: Lundgren, Andrew 
  To: 'Lustre-discuss at clusterfs.com' 
  Sent: Monday, March 17, 2008 7:29 PM
  Subject: [Lustre-discuss] how to replace a bad OST.


  I am trying to learn how to replace a defective OST with a new one.  Assuming the old OST can not be salvaged.

   

  I have a test cluster that I am working on.  

   

  I deactivated the volume on the MGS using:

   

  lctl conf_param content-OST0002-osc.osc.active=0

   

  I unlinked all of the bad files by finding the ones on the bad volume.

   

  I formatted a fresh OST using the index number of the bad device:

   

  mkfs.lustre --reformat  --fsname content --ost --mgsnode=4.248.52.81 at tcp0 --param="failover.mode=failout" --index=02 /dev/md6

   

  Then I tried to mount the freshly formatted OST into the cluster.   

   

  Unfortunately, I end up with an error:

   

  mount.lustre: mount /dev/md6 at /lustre_raw_ost_one failed: Address already in use

  The target service's index is already in use. (/dev/md6)

   

  How can I re-use the index number to prevent always having a “dead” point in my cluster?

   

  Thanks!

   

  --

  Andrew 



----------------------------------------------------------
Outgoing messages are virus free checked by NOD32 system 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.lustre.org/pipermail/lustre-discuss-lustre.org/attachments/20080317/e947d81f/attachment.htm>