couldn't mount pmfs on CentOS 7, but successfully mounted on CentOS 6

[Ques Ans]

Hi all,

  Result from "df -aTh " command on CentOS 7:

Filesystem                          Type             Size  Used Avail
Use% Mounted on
none                                pmfs              42G   30G   13G
71% /data/wholesale
none                                pmfs              42G   30G   13G
71% /datat/retail

exported as /data/wholesale *(rwsubtree_check,fsid=1000) on nfsserver.

 in nfsclient, mount -t nfs -o vers=4 11.55.66.77:/data/wholesale /mytest/

It thrwoing io error. can't read data from /mytest. But mounted.

On CentOS 6, I am able to read the contents from same share.

On CentOS 7, dmesg details:

[55722.404319] NFSD: laundromat service - starting
[55722.404323] NFSD: laundromat_main - sleeping for 90 seconds
[55812.450925] NFSD: laundromat service - starting
[55812.450929] NFSD: laundromat_main - sleeping for 90 seconds
[55902.497534] NFSD: laundromat service - starting
[55902.497538] NFSD: laundromat_main - sleeping for 90 seconds
[55992.544143] NFSD: laundromat service - starting
[55992.544147] NFSD: laundromat_main - sleeping for 90 seconds
[56082.590752] NFSD: laundromat service - starting
[56082.590756] NFSD: laundromat_main - sleeping for 90 seconds

Please suggest how to mount on CentOS 7.

Thanks in advance,
Q