Standard RTEMS NFSv3 client

[Matt Rippa via Tech-talk <tech-talk at aps.anl.gov>]

Hello EPICS/RTEMS users,

Back in 2017 there were some emails in the EPICS and RTEMS community about requesting support for an RTEMS NFSv3 client . We're getting increasing requests from our IT department to support this but don't see an easy way forward. We're running RTEMS 4.10.2 and NFSv2 is currently working and supported by default with a CentOS 6 file server. Moving to CentOS 7 we're getting push back supporting NFSv2. It's not enabled by default and we have to configure it. Our IT department believes the ability to enable NFS v2 on CentOS7 is a bug and it may not function properly after routine maintenance on a CentOS7 machine. This may be related to [1] below. A few questions:

1. Is there any risk manually configuring a CentOS7 nfs server to use version 2 via /etc/sysconfig/nfs ?:

Config changes to /etc/sysconfig/nfs: 
MOUNTD_NFS_V2="yes"
RPCNFSDARGS="-V 2"
RPCMOUNTDOPTS="-V 2"

2. Do you know if CentOS 8 continues to support NFSv2, even if you have to configure it?

3. Do you know if/when we'll hit a hard stop with NFS v2 support on CentOS?

4. Gemini may be able to find some funding for the development of an NFSv3 client on RTEMS. Are other sites interested in pursuing this and sharing the cost?

Aloha,

-Matt Rippa

[1] https://bugzilla.redhat.com/show_bug.cgi?id=1452461