Configuring NAS Libraries
12c Release 2 (188.8.131.52.0)
This guide provides an end-to-end example for how to use Oracle Enterprise Manager Ops Center.
A virtualization host such as a global zone or a control domain relies on a storage library to store the metadata for the virtualization host's virtual hosts, as well as the data that is the output of their operations. The metadata and data is stored on disks that are managed by the storage libraries. In most cases, a virtualization host is in a server pool so the virtualization host uses the storage library associated with the server pool.
A storage library can use block storage or file system storage. Filesystem storage is provided either on the host's own file system (
file:///guests) or on a shared NFS location.
For virtualization hosts to support migration of virtual hosts from one virtualization host to another virtualization host, all participating hosts must have access to the filesystem that stores the virtual hosts' metadata and data. If the metadata of a virtual host is saved locally, it cannot be migrated. To enable migration, use a Network Attached Storage (NAS) storage server to back an NFS share that can be accessed by the systems that support the virtualization hosts.
This document describes how to set up a NAS storage library. When you complete these procedures, the storage library is ready to be associated with a server pool.
See Related Articles and Resources for links to related information and articles about other types of storage libraries.
You will need the following to set up and use a filesystem storage library:
An managed NAS storage device
The IP address of the storage appliance
root user account to log into the storage appliance
The role of Storage Admin
Because the Enterprise Controller does not mount the NFS share, use an NFS server on a system that is close to the systems on which the virtualization hosts reside. The systems on which the Enterprise Controller and virtualization hosts reside must be able to write to the NAS shares as
root and the files must be owned by
The procedure for setting up an NFS share depends on several site-specific factors such as the version of NFS protocol and name service management. The example in this section describes one method of configuring the share on an NFS server running on the Oracle Solaris 10 operating system. For Oracle Solaris 11, see Oracle Solaris Administration: Network Services for the information about the
Identify the file system you want to share and add the file system to the
/etc/vfstab file so it mounts automatically.
Add an entry to share the file system with options that enable the NFS clients to have read and write root-level access to the share, such as:
share -F nfs -o rw,root=<access_list> -d "<description>" /<directory>
where <access_list> specifies the clients that can access the share as the root user, <description> is text to identify the purpose of the share, and </directory> identifies the directory that you want to share on the NFS server. For example, to allow root access to the
/export/lib/libX directory for all systems on the 192.168.1 subnet, add the following entry:
share -F nfs -o rw,firstname.lastname@example.org -d "Share 0" /export/lib/libX
share_nfs(1M) man page for information about NFS share options, and how to specify the access list.
Share the directory and verify that the directory is shared. For example:
# share export/lib/libX # share - /export/lib/libX rw,email@example.com "Share 0"
On each NFS client, edit the
NFSMAPID_DOMAIN variable and change the variable value to the domain name.
Verify the NFS share is visible on the client.
# showmount -e <server-name> export list for <server-name>: /export/virtlib/lib0 (everyone)
These are the tasks for setting up a NAS storage library:
The NFS share is a file system on a NAS storage device. You can view the shares on managed storage servers from the Oracle Enterprise Manager Ops Center user interface.
Expand Assets in the Navigation pane and click
Click All Assets to expand the section.
Click on the NAS storage server in the Storage section.
In the center pane, click the Storage Shares tab.
View the shares and choose one with capacity to support a server pool. You will use this share in the following procedure.
Expand Libraries in the Navigation pane. The new library will be created in the Filesystem Storage section.
Click New NAS Software Library in the Actions pane.
Enter a name for the library and a description. For example, identify how the new library will be used.
Associate one or more server pools with the new storage library. Click Next.
In this example, the selected server pool includes a control domain, an I/O domain, and a root domain. To refine the association between the server pool and the new library, identify which domains provide access to the storage library. New guests will get access through the specified domain. You must choose at least one domain by clicking the check box.
By default, the wizard displays the option for using an exported share of a storage device. Because this procedure has set up an NFS share, click the Other option.
Enter the URL or IP address for the NFS server.
(Optional) You can specify the version of NFS that this storage uses. By default, Oracle Enterprise Manager Ops Center uses the operating system's default NFS version. To specify a different version, allow the version to be changed.
Click the Override NFS Version option.
Click the drop-down list of NFS versions. Select a version.
Click the Next button to review a summary of the storage library.
Click the Finish button to submit the job.
When the job is completed, you can see the new storage library in the Libraries section of the Navigation pane.
The following chapters in the Oracle Enterprise Manager Ops Center Feature Reference Guide contain more information:
Storage Libraries for Virtualization
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Oracle Enterprise Manager Ops Center Configuring NAS Libraries, 12c Release 2 (184.108.40.206.0)
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