We are mostly running VxWorks 6.9.4 now, and with that we have no problem NFS mounting file systems on Centos 7.
However, we have a few IOCs that still need to run VxWorks 5.5. These can mount file systems on Centos 5 servers fine. However, on Centos 7 we see the following:
The NFS mount command from vxWorks succeeds with no error
showmount on the Centos 7 system shows that the vxWorks system has mounted the file system OK
However, the vxWorks system cannot actually read or write any files on the file system.
If I type the “ls” command in a valid directory I get
Cant’ open “null”.
The problem is not file permissions, it works fine if we are running the identical IOC with vxWorks 6.9.4, and we have tried setting the files in that directory to mode 755.
Is anyone running vxWorks 5.5 with a Centos 7/ RHEL 7, etc. modern NFS server? If so, how does one get it to work?