IBM SG24-5131-00 사용자 설명서

IBM Certification Study Guide  AIX HACMP

  • Ensure that node name and the service adapter label are the same on 

each node in the cluster
or

  • Alias the node name to the service adapter label in the /etc/hosts file.

If an NFS client application uses the Network Lock Manager, there are 
additional considerations to ensure a successful failover. Consider the 
following scenario: Node A has a file system mounted locally and exported for 
use by clients. Node B is an NFS client and mounts the exported file system 
for local use by an application that issues lock requests using the 

flock()

 

system call. Node A fails. Node B then attempts to unmount the NFS 
mounted file system, mount it as a local file system, and export it for client 
use. However, the unmount fails because of outstanding lock requests 
against the file system.

Adding the following lines to the cl_deactivate_nfs script will clear 
outstanding locks against the failed node and will allow the file system to be 
unmounted. However, it will result in the loss of all locks. Consider your 
configuration carefully. If you have non-cluster related NFS file systems 
where losing locks would be unacceptable, you may need to take appropriate 
steps before using this addition to the cl_deactivate_nfs script.

Add the code below between the following two lines (three places):