Merge "Updated Dell EqualLogic volume driver section in the Config reference"
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xml:id="dell-equallogic-driver" version="5.0">
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<title>Dell EqualLogic volume driver</title>
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<para>The Dell EqualLogic volume driver interacts with configured
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EqualLogic arrays and supports various operations, such as
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volume creation and deletion, volume attachment and
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detachment, snapshot creation and deletion, and clone
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creation.</para>
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<para>To configure and use a Dell EqualLogic array with Block
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Storage, modify your <filename>cinder.conf</filename> as
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follows.</para>
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<para>Set the <option>volume_driver</option> option to the Dell
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EqualLogic volume driver:</para>
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<programlisting language="ini">volume_driver=cinder.volume.drivers.eqlx.DellEQLSanISCSIDriver</programlisting>
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<para>Set the <option>san_ip</option> option to the IP address to
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reach the EqualLogic Group through SSH:</para>
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<programlisting language="ini">san_ip=10.10.72.53</programlisting>
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<para>Set the <option>san_login</option> option to the user name
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to login to the Group manager:</para>
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<programlisting language="ini">san_login=grpadmin</programlisting>
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<para>Set the <option>san_password</option> option to the password
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to login the Group manager with:</para>
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<programlisting language="ini">san_password=password</programlisting>
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<para>Optionally set the <option>san_thin_provision</option>
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option to false to disable creation of thin-provisioned
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volumes:</para>
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<programlisting language="ini">san_thin_provision=false</programlisting>
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<para>The following table describes additional options that the
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driver supports:</para>
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EqualLogic arrays and supports various operations, including:</para>
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<itemizedlist>
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<listitem><para>Volume creation and deletion</para></listitem>
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<listitem><para>Volume attachment and detachment</para></listitem>
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<listitem><para>Snapshot creation and deletion</para></listitem>
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<listitem><para>Clone creation</para></listitem>
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</itemizedlist>
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<para>The OpenStack Block Storage service supports the following:</para>
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<itemizedlist>
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<listitem><para>Multiple instances of Dell EqualLogic Groups or Dell
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EqualLogic Group Storage Pools and multiple pools on a single array.</para>
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</listitem>
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<listitem><para>Multiple instances of Dell EqualLogic Groups or Dell
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EqualLogic Group Storage Pools or multiple pools on a single array.</para>
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</listitem>
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</itemizedlist>
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<para>The Dell EqualLogic volume driver's ability to access the EqualLogic
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Group is dependent upon the generic block storage driver's SSH settings
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in the <filename>/etc/cinder/cinder.conf</filename> file (see <xref
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linkend="section_block-storage-sample-configuration-files"/> for reference).</para>
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<xi:include href="../../../common/tables/cinder-eqlx.xml"/>
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<para>The following sample <filename>/etc/cinder/cinder.conf</filename>
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configuration lists the relevant settings for a typical Block Storage
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service using a single Dell EqualLogic Group:</para>
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<example><title>Default (single-instance) configuration</title>
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<programlisting language="ini">[DEFAULT]
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#Required settings
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volume_driver = cinder.volume.drivers.eqlx.DellEQLSanISCSIDriver
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san_ip = <replaceable>IP_EQLX</replaceable>
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san_login = <replaceable>SAN_UNAME</replaceable>
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san_password = <replaceable>SAN_PW</replaceable>
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eqlx_group_name = <replaceable>EQLX_GROUP</replaceable>
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eqlx_pool = <replaceable>EQLX_POOL</replaceable>
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#Optional settings
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san_thin_provision = <replaceable>true|false</replaceable>
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eqlx_use_chap = <replaceable>true|false</replaceable>
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eqlx_chap_login = <replaceable>EQLX_UNAME</replaceable>
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eqlx_chap_password = <replaceable>EQLX_PW</replaceable>
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eqlx_cli_timeout = 30
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eqlx_cli_max_retries = 5
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san_ssh_port = 22
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ssh_conn_timeout = 30
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san_private_key = <replaceable>SAN_KEY_PATH</replaceable>
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ssh_min_pool_conn = 1
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ssh_max_pool_conn = 5</programlisting>
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</example>
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<para>In this example, replace the following variables accordingly:</para>
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<variablelist>
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<varlistentry>
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<term>IP_EQLX</term>
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<listitem>
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<para>The IP address used to reach the Dell EqualLogic Group through
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SSH. This field has no default value.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>SAN_UNAME</term>
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<listitem>
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<para>The user name to login to the Group manager via SSH at
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the <parameter>san_ip</parameter>. Default user name is <literal>grpadmin</literal>.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>SAN_PW</term>
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<listitem>
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<para>The corresponding password of <replaceable>SAN_UNAME</replaceable>.
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Not used when <parameter>san_private_key</parameter> is set. Default
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password is <literal>password</literal>.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>EQLX_GROUP</term>
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<listitem>
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<para>The group to be used for a pool where the Block Storage service
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will create volumes and snapshots. Default group is <literal>group-0</literal>.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>EQLX_POOL</term>
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<listitem>
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<para>The pool where the Block Storage service will create volumes
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and snapshots. Default pool is <literal>default</literal>. This
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option cannot be used for multiple pools utilized by the Block
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Storage service on a single Dell EqualLogic Group.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>EQLX_UNAME</term>
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<listitem>
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<para>The CHAP login account for each
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volume in a pool, if <parameter>eqlx_use_chap</parameter> is set
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to <literal>true</literal>. Default account name is <literal>chapadmin</literal>.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>EQLX_PW</term>
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<listitem>
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<para>The corresponding password of <replaceable>EQLX_UNAME</replaceable>.
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The default password is randomly generated in hexadecimal, so you
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must set this password manually.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>SAN_KEY_PATH (optional)</term>
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<listitem>
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<para>The filename of the private key used
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for SSH authentication. This provides password-less login to the
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EqualLogic Group. Not used when <parameter>san_password</parameter>
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is set. There is no default value.</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</section>
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