Note: It is not recommended to start and stop exports individually; this functionality should be provided through the start and stop operations of HAVIP. When HAVIP is not running, exports can exist on different nodes. After the associated HAVIP is started, the exports gather on a single node. Clients that are using an export that is stopped while HAVIP is running raise the NFS error estale , and must dismount and remount the file system. When mounting an HANFS exported file system on a client, the following CLIENT mount options are recommended: hard,intr,retrans=10000 Oracle ACFS HANFS with NFS Locks Oracle ACFS HANFS now supports HANFS NFS v4 with NFS Locks. This functionality is only available on specific operating system (OS) platforms. To activate this functionality, additional steps must be performed after the Oracle Grid Infrastructure software is installed. Note that after these steps are completed, the OS NFS server functionality of the cluster is managed by the Oracle Clusterware stack. In addition, the location of certain OS NFS configuration files will be moved from their default location to a designated Oracle ACFS file system. Some common tasks are: • Activate: acfshanfs addnode • Uninstall: acfshanfs uninstall • Check the installation status: acfshanfs installed • Check if this platform is supported: acfshanfs supported When activating the HANFS v4 lock functionality, the following command must be run on each node: # grid_home /bin/acfshanfs addnode -nfsv4lock -volume volume_device The volume is formatted with an Oracle ACFS file system and mounted on a designated Oracle ACFS clusterware mount point For example on Linux: /dev/asm/nfs-81 on /var/lib/nfs type acfs (rw) Restrictions on the Oracle ADVM volume include: • No previously existing Oracle ACFS resource should exist for this new Oracle ADVM volume. • No Oracle ACFS file system should exist on this Oracle ADVM volume. • This Oracle ADVM volume should not be in use anywhere in the cluster. Chapter 11 Understanding Oracle ACFS Administration 11-53
When Oracle HANFS v4 lock functionality is activated, there are differences from normal HANFS operations. The differences are noted in the following list: • The OS NFS server is under Oracle Clusterware control through the ora.netstorageservice resource. When starting and stopping the Oracle Clusterware stack, the OS NFS server is also started and stopped. • This resource has a dependency on an Oracle ACFS file system: ora.data_ hostname .nfs.acfs The hostname is the hostname of the first node on which the setup for Oracle HANFS locking has been run. • Only Oracle HANFS should be used to export NFS file systems from the Oracle RAC cluster. The NFS server is configured and moved around the Oracle RAC cluster; only file systems exported by Oracle HANFS are accessible when the NFS server has migrated to an alternate cluster node.
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- Spring '09
- Jane Smith
- Oracle Corporation, Computer file, File manager, General Use, Oracle ACFS