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153 lines
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<meta name="DC.Title" content="Transferring control of a tape drive from i5/OS to Linux" />
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<title>Transferring control of a tape drive from i5/OS to Linux</title>
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<body id="rzau9tranztap"><a name="rzau9tranztap"><!-- --></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">Transferring control of a tape drive from <span class="keyword">i5/OS</span> to Linux</h1>
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<div><p>This topic discusses how to transfer control of a tape drive from <span class="keyword">i5/OS™</span> to Linux<sup>®</sup>.</p>
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<div class="section"><p>Before you use an iSeries™ tape drive for a Linux backup
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application, you must make it unavailable from the <span class="keyword">i5/OS</span> side
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using iSeries Navigator
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or a CL command, and then lock it on the Linux side through a Linux terminal
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session. </p>
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<p>Note that some tape devices report in under more than one
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device description. Tape libraries (3570, 358x, 3590, and so on) report in
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as tape libraries (TAPMLBxx) as well as tape devices (TAPxx), where xx is
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a sequence number. The Linux integration support software does not support
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the tape library function. Therefore, if your device has a tape library description,
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both the tape and tape library devices must be made unavailable (varied off)
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before locking the device on the Linux server. Note that, although tape
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libraries are not supported as libraries in Linux, you can use them in sequential
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mode if the drive supports it. </p>
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<p>If you have multiple integrated Linux servers
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being hosted by the same <span class="keyword">i5/OS</span> partition,
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only one server at a time can use a particular iSeries tape drive. If you have multiple
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logical partitions on your iSeries, a tape drive that is owned by one partition
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cannot be shared by integrated Linux servers that are being hosted by
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other partitions. Note, however, that it might be possible to
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logically switch tape drives between <span class="keyword">i5/OS</span> partitions,
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depending on the hardware configuration of the iSeries. </p>
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<p>To transfer control of
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a tape drive from an <span class="keyword">i5/OS</span> partition
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to an integrated Linux server, you must have <span class="keyword">i5/OS</span> Administrator
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or Backup Operator authority. </p>
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<p>To transfer control of an iSeries tape
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drive from <span class="keyword">i5/OS</span> to Linux,
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choose one of the two following methods:</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="rzau9linuxbackup.htm" title="This topic introduces the techniques you can use to perform Linux-centric backup and recovery on an Integrated xSeries Server or Integrated xSeries Adapter running Linux.">Linux-centric backup and recovery</a></div>
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</div>
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</div><div class="nested1" xml:lang="en-us" id="rzau9tranztapinav"><a name="rzau9tranztapinav"><!-- --></a><h2 class="topictitle2">Transferring control of a tape drive with iSeries Navigator</h2>
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<div><div class="section">To transfer control of an iSeries tape drive with the iSeries Navigator,
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complete the following steps:</div>
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<ol><li class="stepexpand"><span>From an iSeries Navigator window, expand the <span class="keyword">i5/OS</span> partition
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you are working with.</span></li>
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<li class="stepexpand"><span>Click <span class="menucascade"><span class="uicontrol">Configuration and Service</span> > <span class="uicontrol">Expand</span> > <span class="uicontrol">Hardware</span> > <span class="uicontrol">Tape
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Devices</span></span>.</span></li>
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<li class="stepexpand"><span>Click <span class="uicontrol">Stand-Alone Devices</span> and then right-click
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the tape device you want to transfer control of to Linux. Select <span class="uicontrol">Make Unavailable</span>.</span></li>
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<li class="stepexpand"><span>If the tape device is also a tape library, click <span class="uicontrol">Tape
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Libraries</span> and then right-click the tape library you want to transfer
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control of to Linux. Select <span class="uicontrol">Make Unavailable</span>.</span></li>
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<li class="stepexpand"><span>To lock the tape 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 <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>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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</li>
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<li class="stepexpand"><span>To lock TAP02 to Linux you would enter the following command:</span> <pre>ixsdev -lock TAP02</pre>
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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 our examples, for
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example, use TAP02 not tap02.</div>
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<p>You could also use the Linux name. <samp class="codeph">ixsdev
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-lock /dev/st1</samp> for a rewindable tape device, or <samp class="codeph">ixsdev -lock
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/dev/nst1</samp> for a non-rewindable tape device. The ixsdev -list command
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shows the status of TAP02 as LOCKED. </p>
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<p>Note that you do not need to mount
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the tape device because Linux does not see it as a block device. You only need
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to mount block devices.</p>
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<pre></pre>
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</li>
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<li class="stepexpand"><span>Insert a tape cartridge that has been formatted for Linux.</span></li>
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</ol>
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</div>
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</div>
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<div class="nested1" xml:lang="en-us" id="rzau9tranztapcl"><a name="rzau9tranztapcl"><!-- --></a><h2 class="topictitle2">Transferring control of a tape drive with CL commands</h2>
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<div><div class="section"><p>To transfer control of an iSeries tape drive with CL commands,
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complete the following steps:</p>
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</div>
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<ol><li class="stepexpand"><span>On the <span class="keyword">i5/OS</span> command
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line, use this command to vary off the tape device: </span> <pre>WRKCFGSTS *DEV *TAP</pre>
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</li>
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<li class="stepexpand"><span>On the Work with Configuration Status display, find the tape device
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you want to transfer control of to Linux. Type <kbd class="userinput">2</kbd> next
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to the device and press <span class="uicontrol">Enter</span>.</span></li>
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<li class="stepexpand"><span>If the tape device is also configured as a tape library, enter
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the following command: </span> <pre>WRKCFGSTS *DEV *TAPMLB</pre>
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</li>
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<li class="stepexpand"><span>On the Work with Configuration Status display, find the tape library
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corresponding to the tape device you want to transfer control of to Linux. Type <kbd class="userinput">2</kbd> next
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to the tape library and press <span class="uicontrol">Enter</span>.</span></li>
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<li class="stepexpand"><span>To lock the tape 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 <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>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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</li>
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<li class="stepexpand"><span>To lock TAP02 to Linux you would enter the following command:</span> <pre>ixsdev -lock TAP02</pre>
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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 our examples, for
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example, use TAP02 not tap02.</div>
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<p>You could also use the Linux name. <samp class="codeph">ixsdev
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-lock /dev/st1</samp> for a rewindable tape device, or <samp class="codeph">ixsdev -lock
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/dev/nst1</samp> for a non-rewindable tape device. The ixsdev -list command
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shows the status of TAP02 as LOCKED. </p>
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<p>Note that you do not need to mount
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the tape device because Linux does not see it as a block device. You only need
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to mount block devices.</p>
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<pre></pre>
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</li>
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<li class="stepexpand"><span>Insert a tape cartridge that has been formatted for Linux.</span></li>
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</ol>
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<div class="section">After the tape 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 a tape drive directly attached
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to a standalone Linux server. Using a Linux backup application, you can now
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direct your Linux backups
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to the iSeries tape
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drive.</div>
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</div>
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</div>
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</body>
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