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Status Not under consideration
Workspace AIX
Created by Guest
Created on Mar 28, 2017

RELATED IDEAS

Implement write delegations in AIX NFSv4 server

See this idea on ideas.ibm.com

The write performance of NFSv4 is degraded by at least an order of magnitude when file locking is used. This documented in PMR 75711,082,000 and a simple test source code provided. This is a unique NFSv4 problem (does not happen under NFSv3)

According to the Dev support this happens because NFS delegation write mechanism as defined in the RFC is not implemented on AIX nfs server. This forces writes to locked files bypass vmo cache and slow down significantly

https://www.ibm.com/support/knowledgecenter/ssw_aix_71/com.ibm.aix.networkcomm/nfs_servclient.htm

The AIX® server only grants read delegations. The AIX server only supports delegation with the 64-bit AIX kernel. The AIX client supports both read and write delegations.

Idea priority High
  • Guest
    Reply
    |     Apr 2, 2018

    There is no plan to deliver this NFSv4 enhancement within the next 18 months. Given that the RFE is over a year old, I think it makes the most sense to decline the request at this point.

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