Enabling NFSv4 Support for Containers

To enable support for NFSv4 mounts in Containers, run the following command on the Hardware Node:

# sysctl –w fs.nfs.nfs4_ct_enable=1

To make sure the NFSv4 support remains enabled after Node reboot, add this line to /etc/sysctl.conf:

fs.nfs.nfs4_ct_enable=1

Next time a resource is mounted, Virtuozzo will automatically choose the latest NFS version supported by both the server and client.

To see support for which versions of NFS is currently enabled, check /proc/fs/nfsd/versions. For example:

# cat /proc/fs/nfsd/versions

+2 +3 +4 -4.1

Note: For this to work, you need to have started the nfs service on the Hardware Node at least once.

In our example, the support for NFS versions 2, 3, and 4 is enabled, while the support for NFS version 4.1 is disabled. To enable it: