Hmx on Details... https://www.deepreflect.net/tags/hmx/ Recent content in Hmx on Details... Hugo en-US Copyright © 2003 - 2026 Leonardo Rizzi Tue, 30 Jun 2026 03:28:29 +0200 AIX LPAR - CDROM device relase https://www.deepreflect.net/2011/01/23/aix-lpar-cdrom-device-relase/ Sun, 23 Jan 2011 20:17:32 +0000 http://blog.deepreflect.net/?p=971 <p>When AIX will not release /dev/cd0 device (after umount any associted filesystems), and you get busy device error on dlpar operations, use this command to kill all processes that take busy resource:</p> <div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;"><code class="language-fallback" data-lang="fallback"><span style="display:flex;"><span># fuser -k -x -u -c /dev/cd0 </span></span></code></pre></div><p>Usually in pSeries hardware configuration is connected to a scsi controller by scsi-to-ide/sas/sata or other terrible solution bridge.</p> <p>To made all this operation faster you can identify pci parent adapter and remove recursively all device.</p> When AIX will not release /dev/cd0 device (after umount any associted filesystems), and you get busy device error on dlpar operations, use this command to kill all processes that take busy resource:

# fuser -k -x -u -c /dev/cd0

Usually in pSeries hardware configuration is connected to a scsi controller by scsi-to-ide/sas/sata or other terrible solution bridge.

To made all this operation faster you can identify pci parent adapter and remove recursively all device.

Identify:

# lsdev -l cd0 -F parent
 scsi0
# lsdev -l scsi0 -F parent
 sisscsia0
# lsdev -l sisscsia0 -F parent
 pci10

Remove:

# rmdev -Rdl pci10
cd0 deleted
ses0 deleted
scsi0 deleted
sisscsia0 deleted
pci10 deleted

Then you can move the controller from HMC to another LPAR

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