Add docs for new HP LeftHand Cinder driver
This change adds the documentation for the new HP LeftHand driver. It documents how to configure the driver in both standard and legacy modes, and describes the functionality when running in each mode. When the driver executes in legacy mode, it is essentially running the old driver code. Therefore, the old LeftHand driver documentation was migrated into the section “HP LeftHand/StoreVirtual CLIQ driver legacy mode”. Closes-Bug:#1279030 Implements blueprint lefthand-cinder-driver Change-Id: I39d9d48669b9b7192814a5e14f0f81a8557d1a44
This commit is contained in:
Jim Branen
parent
5d3484b17a
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<section xml:id="HPSan-driver" xmlns="http://docbook.org/ns/docbook"
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<section xml:id="HP-LeftHand-StoreVirtual-driver" xmlns="http://docbook.org/ns/docbook"
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xmlns:xi="http://www.w3.org/2001/XInclude"
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xmlns:xi="http://www.w3.org/2001/XInclude" xmlns:xlink="http://www.w3.org/1999/xlink"
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xmlns:xlink="http://www.w3.org/1999/xlink" version="5.0">
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version="5.0">
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<title>HP / LeftHand SAN</title>
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<title>HP LeftHand/StoreVirtual driver</title>
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<para>HP/LeftHand SANs are optimized for virtualized environments
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<para>
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with VMware ESX & Microsoft Hyper-V, though the OpenStack
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The
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integration provides additional support to various other
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<filename>HPLeftHandISCSIDriver</filename>
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virtualized environments, such as Xen, KVM, and OpenVZ, by
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is based on the
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exposing the volumes through ISCSI to connect to the
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Block Storage Service (Cinder) plug-in architecture. Volume operations
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instances.</para>
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are run by communicating with the HP LeftHand/StoreVirtual system over
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<para>The HpSanISCSIDriver enables you to use a HP/Lefthand SAN
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HTTPS, or SSH connections. HTTPS communications use the
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that supports the Cliq interface. Every supported volume
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<package>hplefthandclient</package>,
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operation translates into a cliq call in the back-end.</para>
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which is part of the Python standard library.
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<para>To use Cinder with HP/Lefthand SAN, you must set the
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</para>
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following parameters in the <filename>cinder.conf</filename>
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<para>
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file:</para>
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The
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<itemizedlist>
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<filename>HPLeftHandISCSIDriver</filename>
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<listitem>
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can be configured
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<para>Set
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to run in one of two possible modes, legacy mode which uses SSH/CLIQ to
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<parameter>volume_driver=cinder.volume.drivers.san.HpSanISCSIDriver</parameter>.</para>
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communicate with the HP LeftHand/StoreVirtual array, or standard mode
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</listitem>
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which uses a new REST client to communicate with the array. No new
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<listitem>
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functionality has been, or will be, supported in legacy mode. For
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<para>Set <parameter>san_ip</parameter> flag to the
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performance improvements and new functionality, the driver must be
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hostname or VIP of your Virtual Storage Appliance
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configured for standard mode, the <package>hplefthandclient</package>
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(VSA).</para>
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must be downloaded, and HP LeftHand/StoreVirtual Operating System
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</listitem>
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software version 11.5 or
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<listitem>
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higher is required on the array. To configure
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<para>Set <parameter>san_login</parameter> and
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the driver in standard mode see section
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<parameter>san_password</parameter> to the user
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<link xlink:href="hp-lefthand-rest-driver">
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name and password of the ssh user with all necessary
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HP LeftHand/StoreVirtual REST driver standard mode</link>,
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privileges on the appliance.</para>
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to configure the driver in legacy mode, see section
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</listitem>
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<link xlink:href="hp-lefthand-clix-driver">
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<listitem>
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HP LeftHand/StoreVirtual CLIQ driver legacy mode</link>.
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<para>Set <code>san_ssh_port=16022</code>. The default is
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</para>
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22. However, the default for the VSA is usually
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<para>For information about how to manage HP LeftHand/StoreVirtual
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16022.</para>
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storage systems, see the HP LeftHand/StoreVirtual user documentation.
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</listitem>
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</para>
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<listitem>
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<section xml:id="hp-lefthand-rest-driver">
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<para>Set <code>san_clustername</code> to the name of the
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<title>HP LeftHand/StoreVirtual REST driver standard mode</title>
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cluster where the associated volumes are
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<para>This section describes how to configure the HP
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created.</para>
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LeftHand/StoreVirtual Cinder driver in standard mode.
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</listitem>
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</para>
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</itemizedlist>
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<section xml:id="hp-lefthand-sys-reqs">
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<para>The following optional parameters have the following default
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<title>System requirements</title>
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values:</para>
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<para>To use the HP LeftHand/StoreVirtual driver in standard mode,
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<itemizedlist>
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do the following:
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<listitem>
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</para>
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<para><code>san_thin_provision=True</code>. To disable
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<itemizedlist>
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thin provisioning, set to <literal>False</literal>.
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<listitem>
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</para>
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<para>Install LeftHand/StoreVirtual Operating System
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</listitem>
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software version 11.5 or higher on the HP
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<listitem>
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LeftHand/StoreVirtual storage system.
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<para><code>san_is_local=False</code>. Typically, this
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</para>
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parameter is set to <literal>False</literal> for this
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</listitem>
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driver. To configure the cliq commands to run locally
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<listitem>
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instead of over ssh, set this parameter to
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<para>Create a cluster group.</para>
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<literal>True</literal>.</para>
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</listitem>
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</listitem>
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<listitem>
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</itemizedlist>
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<para>
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<para>In addition to configuring the <systemitem class="service"
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Install the <package>hplefthandclient</package> version
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>cinder-volume</systemitem> service, you must configure
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1.0.2 from the Python Package Index on the system with the
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the VSA to function in an OpenStack environment.</para>
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enabled Block Storage Service volume drivers.
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<procedure>
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</para>
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<title>To configure the VSA</title>
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</listitem>
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<step>
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</itemizedlist>
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<para>Configure Chap on each of the <systemitem
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</section>
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class="service">nova-compute</systemitem>
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<section xml:id="hp-lefthand-supported-ops-rest">
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nodes.</para>
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<title>Supported operations</title>
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</step>
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<itemizedlist>
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<step>
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<listitem>
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<para>Add Server associations on the VSA with the
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<para>Create volumes</para>
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associated Chap and initiator information. The name
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</listitem>
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should correspond to the <emphasis role="italic"
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<listitem>
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>'hostname'</emphasis> of the <systemitem
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<para>Delete volumes</para>
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class="service">nova-compute</systemitem> node.
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</listitem>
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For Xen, this is the hypervisor host name. To do this,
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<listitem>
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use either Cliq or the Centralized Management
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<para>Extend volumes</para>
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Console.</para>
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</listitem>
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</step>
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<listitem>
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</procedure>
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<para>Attach volumes</para>
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</section>
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</listitem>
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<listitem>
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<para>Detach volumes</para>
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</listitem>
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<listitem>
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<para>Create snapshots</para>
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</listitem>
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<listitem>
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<para>Delete snapshots</para>
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</listitem>
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<listitem>
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<para>Create volumes from snapshots</para>
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</listitem>
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<listitem>
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<para>Create cloned volumes</para>
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</listitem>
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<listitem>
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<para>Copy images to volumes</para>
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</listitem>
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<listitem>
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<para>Copy volumes to images</para>
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</listitem>
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<listitem>
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<para>Backend assisted volume migration</para>
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</listitem>
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<listitem>
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<para>Volume retype</para>
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</listitem>
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</itemizedlist>
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<para>When a volume is migrated, using Backend assisted volume
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migration, both source and destination clusters must be in
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the same HP LeftHand/StoreVirtual management group.
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The HP LeftHand/StoreVirtual array will use native LeftHand
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APIs to migrate the volume. The volume cannot be attached
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or have snapshots to migrate.
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</para>
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<para>
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Volume type support for the driver includes the ability to set
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the following capabilities in the OpenStack Cinder API
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<filename>cinder.api.contrib.types_extra_specs</filename>
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volume type extra specs extension module.
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</para>
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<itemizedlist>
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<listitem>
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<para>
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<literal>hplh:provisioning</literal>
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</para>
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</listitem>
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<listitem>
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<para>
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<literal>hplh:ao</literal>
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</para>
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</listitem>
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<listitem>
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<para>
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<literal>hplh:data_pl</literal>
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</para>
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</listitem>
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</itemizedlist>
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<para>
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To work with the default filter scheduler, the key values
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are case sensitive and scoped with
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<literal>'hplh:'</literal>.
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For information about how to set the key-value pairs and
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associate them with a volume type, run the following
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command:
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</para>
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<screen> <prompt>$</prompt> <userinput>cinder help type-key</userinput></screen>
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<itemizedlist>
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<listitem>
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<para>The following keys require that the HP LeftHand/StoreVirtual
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storage array be configured for.</para>
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<variablelist>
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<varlistentry><term>hplh:ao</term>
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<listitem><para>The HP LeftHand/StoreVirtual storage array
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must be configured for Adaptive Optimization.</para></listitem>
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</varlistentry>
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<varlistentry><term>hplh:data_pl</term>
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<listitem><para>The HP LeftHand/StoreVirtual storage array
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must be able to support the Data Protection level
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specified by the extra spec.</para></listitem>
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</varlistentry>
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</variablelist>
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</listitem>
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</itemizedlist>
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<itemizedlist>
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<listitem>
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<para>If volume types are not used or a particular key is not
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set for a volume type, the following defaults are used:</para>
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<variablelist>
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<varlistentry><term>hplh:provisioning</term>
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<listitem><para>Defaults to <parameter>thin</parameter> provisioning, the valid values are,
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<parameter>thin</parameter>
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and
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<parameter>full</parameter></para></listitem>
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</varlistentry>
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<varlistentry><term>hplh:ao</term>
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<listitem><para>Defaults to <parameter>true</parameter>, the valid values are,
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<parameter>true</parameter>
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and
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<parameter>false</parameter>.</para></listitem>
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</varlistentry>
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<varlistentry><term>hplh:data_pl</term>
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<listitem><para>Defaults to
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<parameter>r-0</parameter>,
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Network RAID-0 (None), the valid values are,</para>
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<para>
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<parameter>r-0</parameter>,
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Network RAID-0 (None)
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</para>
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<para>
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<parameter>r-5</parameter>,
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Network RAID-5 (Single Parity)
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</para>
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<para>
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<parameter>r-10-2</parameter>,
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Network RAID-10 (2-Way Mirror)
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</para>
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<para>
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<parameter>r-10-3</parameter>,
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Network RAID-10 (3-Way Mirror)
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</para>
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<para>
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<parameter>r-10-4</parameter>,
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Network RAID-10 (4-Way Mirror)
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</para>
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<para>
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<parameter>r-6</parameter>,
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Network RAID-6 (Dual Parity),
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</listitem>
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</itemizedlist>
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</section>
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<section xml:id="enable-hp-lefthand">
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<title>Enable the HP LeftHand/StoreVirtual iSCSI driver in standard mode
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</title>
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<para>
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The
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<filename>HPLeftHandISCSIDriver</filename>
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is installed with the OpenStack software.
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</para>
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<procedure>
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<step>
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<para>
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Install the
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<filename>hplefthandclient</filename>
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Python package on the OpenStack Block Storage system.
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</para>
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<screen><prompt>$</prompt> <userinput>sudo pip install 'hplefthandclient>=1.0.2,<2.0'</userinput></screen>
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</step>
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<step>
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<para>If you are not using an existing cluster, create a
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cluster on the HP LeftHand storage system to be used as
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the cluster for creating volumes.
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</para>
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</step>
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<step>
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<para>
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Make the following changes in the
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<filename>/etc/cinder/cinder.conf</filename>
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file:
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</para>
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<programlisting><emphasis role="bold">## REQUIRED SETTINGS</emphasis>
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# LeftHand WS API Server URL
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hplefthand_api_url=<replaceable>https://10.10.0.141:8081/lhos</replaceable>
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# LeftHand Super user username
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hplefthand_username=<replaceable>lhuser</replaceable>
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# LeftHand Super user password
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hplefthand_password=<replaceable>lhpass</replaceable>
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# LeftHand cluster to use for volume creation
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hplefthand_clustername=<replaceable>ClusterLefthand</replaceable>
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# LeftHand iSCSI driver
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volume_driver=cinder.volume.drivers.san.hp.hp_lefthand_iscsi.HPLeftHandISCSIDriver
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<emphasis role="bold">## OPTIONAL SETTINGS</emphasis>
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# Should CHAPS authentication be used (default=false)
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hplefthand_iscsi_chap_enabled=false
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# Enable HTTP debugging to LeftHand (default=false)
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hplefthand_debug=false
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</programlisting>
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<para>You can enable only one driver on each
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cinder instance unless you enable multiple
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back-end support. See the Cinder multiple
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back-end support instructions to enable this
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feature.
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</para>
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<para>
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If the <option>hplefthand_iscsi_chap_enabled</option>
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is set to <literal>true</literal>, the driver will
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associate randomly-generated CHAP secrets with all
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hosts on the HP LeftHand/StoreVirtual system. OpenStack Compute
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nodes use these secrets when creating iSCSI connections.
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<important>
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<para>CHAP secrets are passed from OpenStack Block
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Storage to Compute in clear text. This
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communication should be secured to
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ensure that CHAP secrets are not discovered.
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</para>
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</important>
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<note>
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<para>CHAP secrets are added to existing hosts as
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well as newly-created ones. If the CHAP option
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is enabled, hosts will not be able to access
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the storage without the generated secrets.
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</para>
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</note>
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</para>
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</step>
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<step>
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<para>
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Save the changes to the <filename>cinder.conf</filename>
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file and restart the
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<systemitem class="service">cinder-volume</systemitem>
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service.
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</para>
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</step>
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</procedure>
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<para>The HP LeftHand/StoreVirtual driver is now enabled in
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standard mode on your OpenStack system. If you experience
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problems, review the Block Storage Service log files for errors.
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</para>
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</section>
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</section>
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<section xml:id="hp-lefthand-clix-driver">
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|
<title>HP LeftHand/StoreVirtual CLIQ driver legacy mode</title>
|
||||||
|
<para>This section describes how to configure the HP
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||||||
|
LeftHand/StoreVirtual Cinder driver in legacy mode.
|
||||||
|
</para>
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||||||
|
<para>The
|
||||||
|
<filename>HPLeftHandISCSIDriver</filename>
|
||||||
|
allows you to use a HP Lefthand/StoreVirtual SAN that supports the
|
||||||
|
CLIQ interface. Every supported volume operation translates into a
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||||||
|
CLIQ call in the back-end.
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||||||
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</para>
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||||||
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<section xml:id="hp-lefthand-supported-ops-cliq">
|
||||||
|
<title>Supported operations</title>
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||||||
|
<itemizedlist>
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||||||
|
<listitem>
|
||||||
|
<para>Create volumes</para>
|
||||||
|
</listitem>
|
||||||
|
<listitem>
|
||||||
|
<para>Delete volumes</para>
|
||||||
|
</listitem>
|
||||||
|
<listitem>
|
||||||
|
<para>Extend volumes</para>
|
||||||
|
</listitem>
|
||||||
|
<listitem>
|
||||||
|
<para>Attach volumes</para>
|
||||||
|
</listitem>
|
||||||
|
<listitem>
|
||||||
|
<para>Detach volumes</para>
|
||||||
|
</listitem>
|
||||||
|
<listitem>
|
||||||
|
<para>Create snapshots.</para>
|
||||||
|
</listitem>
|
||||||
|
<listitem>
|
||||||
|
<para>Delete snapshots</para>
|
||||||
|
</listitem>
|
||||||
|
<listitem>
|
||||||
|
<para>Create volumes from snapshots</para>
|
||||||
|
</listitem>
|
||||||
|
<listitem>
|
||||||
|
<para>Copy images to volumes</para>
|
||||||
|
</listitem>
|
||||||
|
<listitem>
|
||||||
|
<para>Copy volumes to images</para>
|
||||||
|
</listitem>
|
||||||
|
</itemizedlist>
|
||||||
|
</section>
|
||||||
|
<section xml:id="enable-hp-lefthand-cliq">
|
||||||
|
<title>Enable the HP LeftHand/StoreVirtual iSCSI driver in legacy mode
|
||||||
|
</title>
|
||||||
|
<para>
|
||||||
|
The
|
||||||
|
<filename>HPLeftHandISCSIDriver</filename>
|
||||||
|
is installed with the OpenStack software.
|
||||||
|
</para>
|
||||||
|
<procedure>
|
||||||
|
<step>
|
||||||
|
<para>If you are not using an existing cluster, create a
|
||||||
|
cluster on the HP Lefthand storage system to be used as
|
||||||
|
the cluster for creating volumes.
|
||||||
|
</para>
|
||||||
|
</step>
|
||||||
|
<step>
|
||||||
|
<para>
|
||||||
|
Make the following changes in the
|
||||||
|
<filename>/etc/cinder/cinder.conf</filename>
|
||||||
|
file.
|
||||||
|
</para>
|
||||||
|
<programlisting><emphasis role="bold">## REQUIRED SETTINGS</emphasis>
|
||||||
|
|
||||||
|
# VIP of your Virtual Storage Appliance (VSA).
|
||||||
|
san_ip=<replaceable>10.10.0.141</replaceable>
|
||||||
|
|
||||||
|
# LeftHand Super user username
|
||||||
|
san_login=<replaceable>lhuser</replaceable>
|
||||||
|
|
||||||
|
# LeftHand Super user password
|
||||||
|
san_password=<replaceable>lhpass</replaceable>
|
||||||
|
|
||||||
|
# LeftHand ssh port, the default for the VSA is usually 16022.
|
||||||
|
san_ssh_port=16022
|
||||||
|
|
||||||
|
# LeftHand cluster to use for volume creation
|
||||||
|
san_clustername=<replaceable>ClusterLefthand</replaceable>
|
||||||
|
|
||||||
|
# LeftHand iSCSI driver
|
||||||
|
volume_driver=cinder.volume.drivers.san.hp.hp_lefthand_iscsi.HPLeftHandISCSIDriver
|
||||||
|
|
||||||
|
<emphasis role="bold">## OPTIONAL SETTINGS</emphasis>
|
||||||
|
|
||||||
|
# LeftHand provisioning, to disable thin provisioning, set to
|
||||||
|
# set to False.
|
||||||
|
san_thin_provision=True
|
||||||
|
|
||||||
|
# Typically, this parameter is set to False, for this driver.
|
||||||
|
# To configure the CLIQ commands to run locally instead of over ssh,
|
||||||
|
# set this parameter to True
|
||||||
|
san_is_local=False
|
||||||
|
</programlisting>
|
||||||
|
</step>
|
||||||
|
<step>
|
||||||
|
<para>
|
||||||
|
Save the changes to the
|
||||||
|
<filename>cinder.conf</filename>
|
||||||
|
file and restart the
|
||||||
|
<systemitem class="service">cinder-volume</systemitem>
|
||||||
|
service.
|
||||||
|
</para>
|
||||||
|
</step>
|
||||||
|
</procedure>
|
||||||
|
<para>The HP LeftHand/StoreVirtual driver is now enabled in
|
||||||
|
legacy mode on your OpenStack system. If you experience
|
||||||
|
problems, review the Block Storage Service log files for errors.
|
||||||
|
</para>
|
||||||
|
<para>To configure the VSA</para>
|
||||||
|
<procedure>
|
||||||
|
<step>
|
||||||
|
<para>
|
||||||
|
Configure CHAP on each of the
|
||||||
|
<systemitem class="service">nova-compute</systemitem>
|
||||||
|
nodes.
|
||||||
|
</para>
|
||||||
|
</step>
|
||||||
|
<step>
|
||||||
|
<para>
|
||||||
|
Add server associations on the VSA with the associated
|
||||||
|
CHAPS and initiator information. The name should
|
||||||
|
correspond to the
|
||||||
|
<parameter>hostname</parameter>
|
||||||
|
of the
|
||||||
|
<parameter>nova-compute</parameter>
|
||||||
|
node. For Xen, this is the hypervisor host name. To do
|
||||||
|
this, use either CLIQ or the Centralized Management
|
||||||
|
Console.
|
||||||
|
</para>
|
||||||
|
</step>
|
||||||
|
</procedure>
|
||||||
|
</section>
|
||||||
|
</section>
|
||||||
|
</section>
|
||||||
Loading…
Reference in New Issue
Block a user