Before You Start Using Data Fabric NFS
Make sure the following conditions are met before using the Data Fabric NFS gateway:
- The stock Linux NFS service must not be running. Linux NFS and Data Fabric NFS cannot run concurrently.
- Data Fabric NFSv3 and NFSv4 should not be installed on the same node.
- The lock manager (nlockmgr) must be disabled.
- On Red Hat and CentOS v6.0 and higher, the
rpcbind
service must be running.You can use the command
ps ax | grep rpcbind
to check. - On Red Hat and CentOS v5.x and lower, and on Ubuntu and SLES, the
portmapper
service must be running.You can use the command
ps ax | grep portmap
to check. - The
mapr-nfs
package for NFSv3 ormapr-nfs4server
package for NFSv4 must be present and installed.You can list the contents in the
/opt/mapr/roles
directory to check fornfs
in the list. - Make sure you have applied a Community Edition (M3) license or an Enterprise Edition
(M5) license (paid or trial) to the cluster.
See Adding a License.
- Make sure the Data Fabric NFS
service is started.
See Starting, Stopping, and Restarting HPE Ezmeral Data Fabric NFSv3 or Starting, Stopping, and Restarting HPE Ezmeral Data Fabric NFSv4.
- Verify that the primary group of the user listed for
mapr.daemon.user
in the/opt/mapr/conf/daemon.conf
file ismapr.daemon.group
.Restart Warden after any changes to
daemon.conf
.
For information about mounting the cluster using:
- NFSv3, see Accessing Data with NFS v3.
- NFSv4, see Accessing Data with NFS v4.
For information on upgrading your cluster, see Upgrading Data Fabric Software.
WARNING
To preserve compatibility with 32-bit applications and system
calls, MapR-NFS uses 32-bit inode numbers by default. On 64-bit
clients, this default forces the client's 64-bit inode numbers to
be hashed down to 32 bits. Hashing 64-bit inodes down to 32 bits
can potentially cause inum conflicts. To change the default
behavior to 64-bit inode numbers, set the value of the
Use32BitFileId
property to 0 in the
nfsserver.conf
file, then restart the NFS server.