NFS service fails to start with the error : "Starting NFS daemon: rpc.nfsd: Unable to access /proc/fs/nfsd errno 2 (No such file or directory)"

Issue

• NFS service fails to start with the error: Starting NFS daemon: rpc.nfsd: Unable to access /proc/fs/nfsd errno 2 (No such file or directory).

# /etc/init.d/nfs start

FATAL: Module nfsd not found.
FATAL: Error running install command for nfsd
Starting NFS services:                                     [  OK  ]
Starting NFS quotas:                                       [  OK  ]
Starting NFS mountd:                                       [  OK  ]
Stopping RPC idmapd:                                       [  OK  ]
Starting RPC idmapd:                                       [  OK  ]
Starting NFS daemon: rpc.nfsd: Unable to access /proc/fs/nfsd errno 2 (No such file or directory).
Please try, as root, 'mount -t nfsd nfsd /proc/fs/nfsd' and then restart rpc.nfsd to correct the problem
                                                    low       [FAILED]

• Following errors are seen in the logs :

ERROR: modinfo: could not find module bridge
ERROR: modinfo: could not find module oracleacfs
ERROR: modinfo: could not find module oracleadvm
ERROR: modinfo: could not find module oracleoks
ERROR: modinfo: could not find module autofs4
ERROR: modinfo: could not find module nfs
ERROR: modinfo: could not find module lockd
ERROR: modinfo: could not find module fscache
ERROR: modinfo: could not find module auth_rpcgss
ERROR: modinfo: could not find module nfs_acl
ERROR: modinfo: could not find module sunrpc
ERROR: modinfo: could not find module cpufreq_ondemand

rpc.mountd[10449]: Kernel does not have pseudo root support.
rpc.mountd[10449]: NFS v4 mounts will be disabled unless fsid=0
rpc.mountd[10449]: is specfied in /etc/exports file.
rpc.mountd[10450]: Version 1.2.3 starting
modprobe: FATAL: Error running install command for nfsd
modprobe: FATAL: Error running install command for nfsd
rpc.nfsd[10549]: error starting threads: errno 19 (No such device)

modinfo nfsd
ERROR: modinfo: could not find module nfsd

modprobe nfsd
FATAL: Module nfsd not found.
FATAL: Error running install command for nfsd

• # rpm -Va command output revealed the following :

missing     /lib/modules/2.6.32-358.11.1.el6.x86_64/extra
missing     /lib/modules/2.6.32-358.11.1.el6.x86_64/updates