[LU-1168] changing allocation of ost

• Type: Bug
• Resolution: Fixed
• Priority: Blocker
• Affects Version/s: Lustre 1.8.7
• Labels: ldiskfs
• Environment: Red Hat Enterprise Linux 5.7 + lustre 1.8.7-wc1
• Severity: 1

Epic

server

• Assignee: Cliff White (Inactive)
• Reporter: Supporto Lustre Jnet2000 (Inactive)

Description

We add two new OSS server and we would like to redistribute the OST on these 2 new OSS.
The old OSS are:

• 10.121.13.31@tcp
• 10.121.13.62@tcp
  The new OSS are:
• 10.121.13.59@tcp
• 10.121.13.28@tcp

I have un-mounted all the clients, and the mgt, mdt, osts. I want to change the allocation of ost06 from 10.121.13.62@tcp to 10.121.13.28@tcp. The original configuration of ost06 was:
Parameters: mgsnode=10.121.13.31@tcp failover.node=10.121.13.31@tcp ost.quota_type=ug
and the ost06 was hosted on 10.121.13.62@tcp

I have use tunefs.lustre to modify the ost configuration with this command line:
tunefs.lustre --erase-param --mgsnode=10.121.13.31@tcp --mgsnode=10.121.13.62@tcp --param="failover.node=10.121.13.59@tcp ost_quota=ug" --writeconf /dev/mapper/ost06p1
I want host the ost06 on 10.121.13.28@tcp with a failover on 10.121.13.59@tcp

When I starting up, I see in the logs that the mds try to connect to OST0006 on 10.121.13.62@tcp and give some ost_connection error.

Could you provide me the correct procedure to relocate the ost06 ?

Thanks in advanced