160 lines
9.4 KiB
HTML
160 lines
9.4 KiB
HTML
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html lang="en-us" xml:lang="en-us">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 2005" />
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<meta name="DC.rights.owner" content="(C) Copyright IBM Corporation 2005" />
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<meta name="DC.Type" content="task" />
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<meta name="DC.Title" content="Sharing iSeries tape and optical drives with Linux" />
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<meta name="abstract" content="This topic discusses how to share optical drives with your integrated Linux server." />
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<meta name="description" content="This topic discusses how to share optical drives with your integrated Linux server." />
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<meta name="DC.Relation" scheme="URI" content="rzau9mandrives.htm" />
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<meta name="DC.Format" content="XHTML" />
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<meta name="DC.Identifier" content="rzau9shareopdrive" />
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- US Government Users Restricted Rights -->
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<!-- Use, duplication or disclosure restricted by -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Sharing iSeries tape
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and optical drives with Linux</title>
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</head>
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<body id="rzau9shareopdrive"><a name="rzau9shareopdrive"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Sharing iSeries tape
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and optical drives with Linux</h1>
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<div><p>This topic discusses how to share optical drives with your integrated Linux<sup>®</sup> server.</p>
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<div class="section"><p>Another advantage of using integrated Linux servers is the ability for Linux to share iSeries™ tape
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and optical devices. Your ability to use iSeries tape drives from Linux depends
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on the tape device model, tape controller, and media type. If you have logical
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partitions on your iSeries, a Linux server can only see the tape and
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optical drives that are allocated to the <span class="keyword">i5/OS™</span> partition
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where the server is hosted.</p>
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<p>The main reason why you would share an iSeries tape
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drive with Linux is
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so that you do not need to buy additional tape drives specifically for Linux to
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use. All Linux servers
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can share an iSeries tape
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drive in the same host <span class="keyword">i5/OS</span> partition,
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although not at the same time. </p>
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<p>Each xSeries<sup>®</sup> server comes with its own optical
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drive. Therefore, Integrated xSeries Adapter-attached xSeries machines are unlikely to need
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to share an iSeries optical
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drive. An exception can be if the iSeries optical drive is a DVD-RAM device.
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However, at the time of writing, the Linux integration software did not support
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writing to DVD-RAM from Linux. </p>
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<p>The Integrated xSeries Server does not come with its
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own optical device. Therefore, it is likely that you would need to share your iSeries optical
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device with your Integrated xSeries Servers. </p>
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<p>Before you can use iSeries tape
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and optical devices from a Linux server, you must make the devices
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available to Linux.
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An iSeries tape
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device must first be made unavailable (varied off) before a Linux server
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can use it, whereas an optical drive must be made available (varied on) before Linux can
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use it. </p>
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<p>The latest information on backup device support is available
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at: </p>
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<p><a href="http://www.ibm.com/servers/eserver/iseries/integratedxseries/linux/backup.html" target="_blank">http://www.ibm.com/servers/eserver/iseries/integratedxseries/linux/backup.html</a> <img src="www.gif" alt="Link outside information center" /></p>
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</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzau9mandrives.htm" title="This topic describes information and advice on how to manage iSeries disk storage allocated to integrated Linux servers.">Managing Linux drives</a></div>
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</div>
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</div><div class="nested1" xml:lang="en-us" id="rzau9transconop"><a name="rzau9transconop"><!-- --></a><h2 class="topictitle2">Transferring control of an optical drive from <span class="keyword">i5/OS</span> to Linux</h2>
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<div><div class="section"><p>Sharing an iSeries optical drive with Linux involves
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transferring control of the optical drive from <span class="keyword">i5/OS</span> to Linux,
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and transferring control back from Linux to <span class="keyword">i5/OS</span>.</p>
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<p>To
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transfer control of an iSeries optical drive from <span class="keyword">i5/OS</span> to Linux with
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CL commands, complete the following steps:</p>
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</div>
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<ol><li class="stepexpand"><span>On an <span class="keyword">i5/OS</span> command
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line, use this CL command to check the status of the optical drives (you cannot
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check the status of an optical device using iSeries Navigator):</span> <pre>WRKCFGSTS *DEV *OPT</pre>
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<p>On
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the Work with Configuration Status display, find the optical device you want
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to transfer control of to Linux. Check that it is varied on. If not, type <kbd class="userinput">1</kbd> next
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to the device and press <span class="uicontrol">Enter</span>.</p>
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</li>
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<li class="stepexpand"><span>To lock the optical device to Linux, start a Linux terminal session and log in as root.</span></li>
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<li class="stepexpand"><span>At the command prompt enter the ixsdev command and press Enter.
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The syntax is:</span> <pre>ixsdev [-list] | [[-lock | -unlock] device name]</pre>
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<p>For
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example, to list the tape and optical drives accessible by Linux enter the
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following command:</p>
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<pre>ixsdev -list</pre>
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<p>To
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lock OPT01 to Linux you would enter the following command:</p>
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<pre>ixsdev -lock OPT01</pre>
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<p>You
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could also use the Linux name:</p>
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<pre>ixsdev -lock /dev/scd0</pre>
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<p>The
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status of OPT01 shows as <samp class="codeph">LOCKED</samp>.</p>
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<div class="note"><span class="notetitle">Note:</span> In Linux, commands
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are case sensitive. Make sure you use the same case as in the examples. For
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example, use <samp class="codeph">OPT01</samp>, not <samp class="codeph">opt01</samp>.</div>
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</li>
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<li class="stepexpand"><span>Because Linux sees optical drives as block devices, you need
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to mount the optical device (<strong>NOTE:</strong> If the optical device has been mounted,
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you will need to unmount the device before unlocking it.) :</span><ol type="a"><li class="substepexpand"><span>Create a mount point using the Make directory (mkdir) command.
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For example:</span> <pre>mkdir /mnt/scd0</pre>
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</li>
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<li class="substepexpand"><span>Mount the optical device. For example:</span> <pre>mount /dev/scd0 /mnt/scd0</pre>
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</li>
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</ol>
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</li>
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</ol>
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<div class="section">After the optical drive has been logically switched to the integrated Linux server,
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you can use it in the same way as you would use an optical drive directly
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attached to a standalone Linux server.</div>
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</div>
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</div>
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<div class="nested1" xml:lang="en-us" id="rzau9transconfromlinux"><a name="rzau9transconfromlinux"><!-- --></a><h2 class="topictitle2">Transferring control of an optical drive from Linux to <span class="keyword">i5/OS</span></h2>
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<div><div class="section"><p>To transfer control of an iSeries optical drive back to <span class="keyword">i5/OS</span> all you need to do is unlock
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it in Linux.
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Note that if you either shut down the integrated Linux server before you unlock the optical
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drive, or the server fails before you unlock the optical drive, it unlocks
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automatically.</p>
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<p>To transfer control of an iSeries optical drive back to <span class="keyword">i5/OS</span> from Linux, complete
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the following steps:</p>
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</div>
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<ol><li class="stepexpand"><span>To unlock the optical drive from Linux, start a Linux terminal session and log in as root.</span></li>
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<li class="stepexpand"><span>At the command prompt enter the ixsdev command and press <span class="uicontrol">Enter</span>.
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The syntax is:</span> <pre>ixsdev [-list] | [[-lock | -unlock] device name]</pre>
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<p>To
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unlock OPT01 from Linux you would enter the following command:</p>
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<pre>ixsdev -unlock OPT01</pre>
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<div class="note"><span class="notetitle">Note:</span> In Linux,
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commands are case sensitive. Make sure you use the same case as in the examples.
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For example, use <samp class="codeph">OPT01</samp>, not <samp class="codeph">opt01</samp>.</div>
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</li>
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<li class="stepexpand"><span>You could also use the Linux name:</span> <pre>ixsdev -unlock /dev/scd0</pre>
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<p>The
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status of OPT01 shows as <samp class="codeph">UNLOCKED</samp>.</p>
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</li>
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<li class="stepexpand"><span>On an <span class="keyword">i5/OS</span> command
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line, follow these steps:</span><ol type="a"><li class="substepexpand"><span>Use the following CL command to check that the optical drive
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is still varied on:</span> <pre>WRKCFGSTS *DEV *OPT</pre>
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</li>
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<li class="substepexpand"><span>On the Work with Configuration Status display, find the optical
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device you previously unlocked. Its status should be VARIED ON. If not, type <kbd class="userinput">1</kbd> next
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to the device and press <span class="uicontrol">Enter</span>.</span></li>
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</ol>
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</li>
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</ol>
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<div class="section">You can now use the optical drive from <span class="keyword">i5/OS</span>.</div>
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</div>
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</div>
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</body>
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</html>
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