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== Kernel NFS server ==
Kernel-space NFS server is supported by latest RHEL5 and RHEL6 based kernels and since vzctl-3.0.24. NB! Currently only NFSv3 is supported - no NFSv4 support yet.
NB! Currently only NFSv3 is supported - no NFSv4 support yet.
=== Prerequisites ===
In order to run an NFS server inside a container, make sure:
* '''nfsd kernel module is loaded on host system before starting a container'''* '''nfsd feature for a container is turned on ''' (<code>vzctl set $CTID --feature nfsd:on --save</code>) === Setup ===* Make sure that rpcbind service is started before nfs service:: <code>chkconfig rpcbind on && service rpcbind start</code>* Disable NFSv4 and nfsd module loading warnings in /etc/sysconfig/nfs by uncommenting the following lines: MOUNTD_NFS_V3="yes" RPCNFSDARGS="-N 4" NFSD_MODULE="noload"* Start NFS service:: <code>chkconfig nfs on && service nfs start</code> === Troubleshooting === Make sure that:# you have enabled nfsd feature for your container# nfsd kernel module is loaded before you started the container ==== rpcbind ==== If you see this:<pre># service nfs start...Starting NFS services: [ OK ]Starting NFS quotas: Cannot register service: RPC: Unable to receive; errno = Connection refusedrpc.rquotad: unable to register (RQUOTAPROG, RQUOTAVERS, udp).</pre> It means you haven't started rpcbind service. Solution:<pre>chkconfig rpcbind on && service rpcbind start</pre> ==== nfsd module ====If you see this:<pre># service nfs start....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 [FAILED]# mount -t nfsd nfsd /proc/fs/nfsdmount: unknown filesystem type 'nfsd'</pre>
NFSD_MODULE="noload"
== User-space NFS server ==