On Mon, Oct 25, 2010 at 2:18 PM, Gordon Messmer <span dir="ltr">&lt;<a href="mailto:yinyang@eburg.com">yinyang@eburg.com</a>&gt;</span> wrote:<br><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div class="im"><br>
</div>Which block devices are you exporting to your guest?  Post the libvirt<br>
configuration file for it.</blockquote><div><br></div><div>See below.  It&#39;s specifically the second volume group that collides between virtual and physical systems.  Both dom0 and U have identical VolGroup00 VGs, but these do not collide.</div>
<div><br></div><div>Renaming the VG used by the domU within the domU removes the collision, but the newly-renamed VG still shows up in dom0 as a useable VG with space to be allocated.   </div><div><br></div><div>Here is the pvdisplay output from dom0.  Interestingly, it shows /dev/VolGroup01/lv-sys1-data as &quot;physical volume&quot;  when it&#39;s obviously just an LV in the original VolGroup01 VG.  And this only happens with the _second_ Volume Group created.  VolGroup00 is not an issue on this or any other systems I&#39;ve used:</div>
<div><br></div><div><div>[root@iain2 qemu]# pvdisplay</div><div>  --- Physical volume ---</div><div>  PV Name               /dev/VolGroup01/lv-sys1-data</div><div>  VG Name               vg-sys1</div><div>  PV Size               40.00 GB / not usable 4.00 MB</div>
<div>  Allocatable           yes (but full)</div><div>  PE Size (KByte)       4096</div><div>  Total PE              10239</div><div>  Free PE               0</div><div>  Allocated PE          10239</div><div>  PV UUID               FTA4QU-ydZ7-e2Yy-nBsi-t4st-3jj7-IAkQH8</div>
<div>   </div><div>  --- Physical volume ---</div><div>  PV Name               /dev/sda3</div><div>  VG Name               VolGroup00</div><div>  PV Size               39.06 GB / not usable 29.77 MB</div><div>  Allocatable           yes (but full)</div>
<div>  PE Size (KByte)       32768</div><div>  Total PE              1249</div><div>  Free PE               0</div><div>  Allocated PE          1249</div><div>  PV UUID               tTViks-3lBM-HGzV-mnN9-zRsT-fFT0-ZsJRse</div>
<div>   </div><div>  --- Physical volume ---</div><div>  PV Name               /dev/sda2</div><div>  VG Name               VolGroup01</div><div>  PV Size               240.31 GB / not usable 25.75 MB</div><div>  Allocatable           yes </div>
<div>  PE Size (KByte)       32768</div><div>  Total PE              7689</div><div>  Free PE               5129</div><div>  Allocated PE          2560</div><div>  PV UUID               ZE5Io3-WYIO-EfOQ-h03q-zGdF-Frpa-tm63fX</div>
</div><div><br></div><div><br></div><div><br></div><div><div>[root@iain2 qemu]# cat sys1.xml </div><div>&lt;domain type=&#39;kvm&#39;&gt;</div><div>  &lt;name&gt;sys1&lt;/name&gt;</div><div>  &lt;uuid&gt;37f34394-d380-d2c4-ac37-3263c16028ff&lt;/uuid&gt;</div>
<div>  &lt;memory&gt;524288&lt;/memory&gt;</div><div>  &lt;currentMemory&gt;524288&lt;/currentMemory&gt;</div><div>  &lt;vcpu&gt;1&lt;/vcpu&gt;</div><div>  &lt;os&gt;</div><div>    &lt;type arch=&#39;x86_64&#39; machine=&#39;rhel5.4.0&#39;&gt;hvm&lt;/type&gt;</div>
<div>    &lt;boot dev=&#39;hd&#39;/&gt;</div><div>  &lt;/os&gt;</div><div>  &lt;features&gt;</div><div>    &lt;acpi/&gt;</div><div>    &lt;apic/&gt;</div><div>    &lt;pae/&gt;</div><div>  &lt;/features&gt;</div><div>  &lt;clock offset=&#39;utc&#39;/&gt;</div>
<div>  &lt;on_poweroff&gt;destroy&lt;/on_poweroff&gt;</div><div>  &lt;on_reboot&gt;restart&lt;/on_reboot&gt;</div><div>  &lt;on_crash&gt;restart&lt;/on_crash&gt;</div><div>  &lt;devices&gt;</div><div>    &lt;emulator&gt;/usr/libexec/qemu-kvm&lt;/emulator&gt;</div>
<div>    &lt;disk type=&#39;block&#39; device=&#39;disk&#39;&gt;</div><div>      &lt;driver name=&#39;qemu&#39; cache=&#39;none&#39;/&gt;</div><div>      &lt;source dev=&#39;/dev/VolGroup01/lv-sys1&#39;/&gt;</div><div>      &lt;target dev=&#39;vda&#39; bus=&#39;virtio&#39;/&gt;</div>
<div>    &lt;/disk&gt;</div><div>    &lt;disk type=&#39;block&#39; device=&#39;cdrom&#39;&gt;</div><div>      &lt;target dev=&#39;hdc&#39; bus=&#39;ide&#39;/&gt;</div><div>      &lt;readonly/&gt;</div><div>    &lt;/disk&gt;</div>
<div>    &lt;disk type=&#39;block&#39; device=&#39;disk&#39;&gt;</div><div>      &lt;source dev=&#39;/dev/VolGroup01/lv-sys1-data&#39;/&gt;</div><div>      &lt;target dev=&#39;vdb&#39; bus=&#39;virtio&#39;/&gt;</div><div>
    &lt;/disk&gt;</div><div>    &lt;interface type=&#39;network&#39;&gt;</div><div>      &lt;mac address=&#39;54:52:00:3b:4a:f5&#39;/&gt;</div><div>      &lt;source network=&#39;default&#39;/&gt;</div><div>      &lt;model type=&#39;virtio&#39;/&gt;</div>
<div>    &lt;/interface&gt;</div><div>    &lt;serial type=&#39;pty&#39;&gt;</div><div>      &lt;source path=&#39;/dev/pts/3&#39;/&gt;</div><div>      &lt;target port=&#39;0&#39;/&gt;</div><div>    &lt;/serial&gt;</div><div>
    &lt;console type=&#39;pty&#39; tty=&#39;/dev/pts/3&#39;&gt;</div><div>      &lt;source path=&#39;/dev/pts/3&#39;/&gt;</div><div>      &lt;target port=&#39;0&#39;/&gt;</div><div>    &lt;/console&gt;</div><div>    &lt;input type=&#39;mouse&#39; bus=&#39;ps2&#39;/&gt;</div>
<div>    &lt;graphics type=&#39;vnc&#39; port=&#39;-1&#39; autoport=&#39;yes&#39; keymap=&#39;en-us&#39;/&gt;</div><div>  &lt;/devices&gt;</div><div>&lt;/domain&gt;</div></div><div><br></div><div><br></div><div> </div></div>
-- <br>-- -<br>Iain Morris<br><a href="mailto:iain.t.morris@gmail.com">iain.t.morris@gmail.com</a><br>