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<body class='hmmessage'><div dir='ltr'>Hi,<br>both<br><p class="ecxMsoNormal"><span style="font-size: 11pt; font-family: "Calibri","sans-serif";">/sys/kernel/debug/tracing/tracing_on</span></p>
<p class="ecxMsoNormal"><span style="font-size: 11pt; font-family: "Calibri","sans-serif";">/sys/kernel/debug/tracing/events/kvm/enable is 1.</span></p><p class="ecxMsoNormal"><br><span style="font-size: 11pt; font-family: "Calibri","sans-serif";"></span></p><p class="ecxMsoNormal"><span style="font-size: 11pt; font-family: "Calibri","sans-serif";">The logs are:<br></span></p><br><font style="" color="#000000"><a href="http://paste.openstack.org/raw/72197/">libvirtd-debug</a></font> (sorry for lots of garbage in this file)<br><br><font style="" color="#000000"><a href="http://paste.openstack.org/raw/72198/">/var/log/messages</a></font><br><br><font style="" color="#000000"><a href="http://paste.openstack.org/raw/72205/">instance.log</a></font><br><br>After disabling tracing_on and tracing kvm events, it gave the same error.<br><br>Regards,<br>Arindam<br><br><br><div><hr id="stopSpelling">From: parthipan@hp.com<br>To: arindam@live.com<br>Subject: RE: [Openstack] Error mounting disk with libguestfs (child process died unexpectedly)<br>Date: Tue, 4 Mar 2014 14:07:31 +0000<br><br>
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<p class="ecxMsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;">If you can that’ll be great. Thanks.
</span></p>
<p class="ecxMsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;"> </span></p>
<p class="ecxMsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;">Also what’s in</span></p>
<p class="ecxMsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;"> </span></p>
<p class="ecxMsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;">/sys/kernel/debug/tracing/tracing_on</span></p>
<p class="ecxMsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;">/sys/kernel/debug/tracing/events/kvm/enable</span></p>
<p class="ecxMsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;"> </span></p>
<p class="ecxMsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;">Try running after</span></p>
<p class="ecxMsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;">echo 0 > /sys/kernel/debug/tracing/tracing_on</span></p>
<p class="ecxMsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;"> </span></p>
<p class="ecxMsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;">If there’s no improvement try - although I don’t know what it really does (I need to read the code)</span></p>
<p class="ecxMsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;">echo 0 > /sys/kernel/debug/tracing/events/kvm/enable</span></p>
<p class="ecxMsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;"> </span></p>
<p class="ecxMsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;">I’m just wondering if it’s due to some permission/ACL issues when trying to write into debugfs using ftrace, given your observation on different tracing backends.</span></p>
<p class="ecxMsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;"> </span></p>
<p class="ecxMsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;">Thanks for reporting and spending time on this.</span></p>
<p class="ecxMsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;"> </span></p>
<p class="ecxMsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;">Cheers</span></p>
<p class="ecxMsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;">~parthi</span></p>
<p class="ecxMsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;"> </span></p>
<p class="ecxMsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;"> </span></p>
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<p class="ecxMsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";"> Arindam Choudhury [mailto:arindam@live.com]
<br>
<b>Sent:</b> 04 March 2014 13:27<br>
<b>To:</b> Parthipan, Loganathan<br>
<b>Subject:</b> RE: [Openstack] Error mounting disk with libguestfs (child process died unexpectedly)</span></p>
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<p class="ecxMsoNormal"> </p>
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<p class="ecxMsoNormal" style=""><span style="font-family:"Calibri","sans-serif";">Hi,<br>
<br>
Its a multi-node deployment with nova-network.<br>
<br>
If you want I can recreate the error and send you the logs.<br>
<br>
Regards,</span></p>
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<div class="ecxMsoNormal" style="text-align:center;" align="center"><span style="font-family:"Calibri","sans-serif";">
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<p class="ecxMsoNormal" style=""><span style="font-family:"Calibri","sans-serif";">From: parthipan@hp.com<br>
To: arindam@live.com<br>
Subject: RE: [Openstack] Error mounting disk with libguestfs (child process died unexpectedly)<br>
Date: Tue, 4 Mar 2014 13:21:24 +0000</span></p>
<div>
<p class="ecxMsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;">Interesting…</span><span style="font-family:"Calibri","sans-serif";"></span></p>
<p class="ecxMsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;"> </span><span style="font-family:"Calibri","sans-serif";"></span></p>
<p class="ecxMsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;">Is it a single node deployment? Do you have any other log data such as libvirt_debug.log, libvirt/qemu/instance-xxxx.log? Any errors/warnings during the time
of instance creation in syslog?</span><span style="font-family:"Calibri","sans-serif";"></span></p>
<p class="ecxMsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;"> </span><span style="font-family:"Calibri","sans-serif";"></span></p>
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<p class="ecxMsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";"> Arindam Choudhury [mailto:arindam@live.com]
<br>
<b>Sent:</b> 04 March 2014 12:56<br>
<b>To:</b> Parthipan, Loganathan<br>
<b>Subject:</b> RE: [Openstack] Error mounting disk with libguestfs (child process died unexpectedly)</span><span style="font-family:"Calibri","sans-serif";"></span></p>
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<p class="ecxMsoNormal"><span style="font-family:"Calibri","sans-serif";"> </span></p>
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<p class="ecxMsoNormal"><span style="font-family:"Calibri","sans-serif";"><br>
it only happens when I enable </span></p>
<pre>--enable-trace-backend=ftrace<br><br>with <br>--enable-trace-backend=simple<br><br>works fine.</pre>
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<p class="ecxMsoNormal"><span style="font-family:"Calibri","sans-serif";">From: parthipan@hp.com<br>
To: arindam@live.com<br>
Subject: RE: [Openstack] Error mounting disk with libguestfs (child process died unexpectedly)<br>
Date: Tue, 4 Mar 2014 12:33:55 +0000</span></p>
<div>
<p class="ecxMsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;">Also check if it’s a cgroups issue since the binary location changed. You could look at the syslog and kern.log</span><span style="font-family:"Calibri","sans-serif";"></span></p>
<p class="ecxMsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;"> </span><span style="font-family:"Calibri","sans-serif";"></span></p>
<p class="ecxMsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;"> </span><span style="font-family:"Calibri","sans-serif";"></span></p>
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<p class="ecxMsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";"> Parthipan, Loganathan
<br>
<b>Sent:</b> 04 March 2014 12:15<br>
<b>To:</b> 'Arindam Choudhury'; openstack@lists.openstack.org<br>
<b>Subject:</b> RE: [Openstack] Error mounting disk with libguestfs (child process died unexpectedly)</span><span style="font-family:"Calibri","sans-serif";"></span></p>
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<p class="ecxMsoNormal"><span style="font-family:"Calibri","sans-serif";"> </span></p>
<p class="ecxMsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;">Reading your log, I don’t think the problem is due to injection failure at libguestfs. It’s a warning and is ignored.</span><span style="font-family:"Calibri","sans-serif";"></span></p>
<p class="ecxMsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;"> </span><span style="font-family:"Calibri","sans-serif";"></span></p>
<p class="ecxMsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;">Seems more like a network setup issue. Are you using neutron? Is the network/subnet etc setup properly?</span><span style="font-family:"Calibri","sans-serif";"></span></p>
<p class="ecxMsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;"> </span><span style="font-family:"Calibri","sans-serif";"></span></p>
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<p class="ecxMsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";"> Arindam Choudhury [mailto:arindam@live.com]
<br>
<b>Sent:</b> 04 March 2014 11:50<br>
<b>To:</b> Parthipan, Loganathan; openstack@lists.openstack.org<br>
<b>Subject:</b> RE: [Openstack] Error mounting disk with libguestfs (child process died unexpectedly)</span><span style="font-family:"Calibri","sans-serif";"></span></p>
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<p class="ecxMsoNormal"><span style="font-family:"Calibri","sans-serif";"> </span></p>
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<p class="ecxMsoNormal"><span style="font-family:"Calibri","sans-serif";">Hi Parthipan,<br>
<br>
When I try to do yum remove python-libguestfs.<br>
It also wants to remove openstack-nova-compute. So, I can not.<br>
<br>
Regards,<br>
Arindam</span></p>
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<p class="ecxMsoNormal"><span style="font-family:"Calibri","sans-serif";">From: parthipan@hp.com<br>
To: arindam@live.com; openstack@lists.openstack.org<br>
Subject: RE: [Openstack] Error mounting disk with libguestfs (child process died unexpectedly)<br>
Date: Tue, 4 Mar 2014 11:23:50 +0000</span></p>
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<p class="ecxMsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;">Arindam,</span><span style="font-family:"Calibri","sans-serif";"></span></p>
<p class="ecxMsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;"> </span><span style="font-family:"Calibri","sans-serif";"></span></p>
<p class="ecxMsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;">What happens if you ‘apt-get remove python-guestfs’ and try? I’d expect it to fallback to nbdmount.</span><span style="font-family:"Calibri","sans-serif";"></span></p>
<p class="ecxMsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;"> </span><span style="font-family:"Calibri","sans-serif";"></span></p>
<p class="ecxMsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;"> </span><span style="font-family:"Calibri","sans-serif";"></span></p>
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<p class="ecxMsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";"> Arindam Choudhury [mailto:arindam@live.com]
<br>
<b>Sent:</b> 04 March 2014 10:40<br>
<b>To:</b> openstack@lists.openstack.org<br>
<b>Subject:</b> [Openstack] Error mounting disk with libguestfs (child process died unexpectedly)</span><span style="font-family:"Calibri","sans-serif";"></span></p>
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<p class="ecxMsoNormal"><span style="font-family:"Calibri","sans-serif";"> </span></p>
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<p class="ecxMsoNormal"><span style="font-family:"Calibri","sans-serif";">Hi,<br>
I have a working Openstack Grizzly setup with nova-network on Scientific Linux. As, SL comes with a old qemu:</span></p>
<pre><span class="ecxpln">qemu</span><span class="ecxpun">-</span><span class="ecxpln">kvm</span><span class="ecxpun">-</span><span class="ecxlit">0.12</span><span class="ecxpun">.</span><span class="ecxlit">1.2</span><span class="ecxpun">-</span><span class="ecxlit">2.355</span><span class="ecxpun">.</span><span class="ecxpln">el6_4</span><span class="ecxpun">.</span><span class="ecxlit">6.x86</span><span class="ecxpln">_64</span><br><br><span class="ecxpln">I am trying to upgrade it to qemu-1.7.0 from source. </span><br><br><span class="ecxpln">The configuration <a href="http://pastebin.com/raw.php?i=geEEXm79" target="_blank">output</a>.</span><br><br>As, openstack use /usr/libexec/qemu-kvm to start up VM, i linked <br>qemu-kvm to qemu-system-x86_64:</pre>
<p class="ecxMsoNormal"><span class="ecxpln"><span style="font-size:10.0pt;font-family:"Courier New";">ls
</span></span><span class="ecxpun"><span style="font-size:10.0pt;font-family:"Courier New";">-</span></span><span class="ecxpln"><span style="font-size:10.0pt;font-family:"Courier New";">l
</span></span><span class="ecxpun"><span style="font-size:10.0pt;font-family:"Courier New";">/</span></span><span class="ecxpln"><span style="font-size:10.0pt;font-family:"Courier New";">usr</span></span><span class="ecxpun"><span style="font-size:10.0pt;font-family:"Courier New";">/</span></span><span class="ecxpln"><span style="font-size:10.0pt;font-family:"Courier New";">libexec</span></span><span class="ecxpun"><span style="font-size:10.0pt;font-family:"Courier New";">/</span></span><span class="ecxpln"><span style="font-size:10.0pt;font-family:"Courier New";">qemu</span></span><span class="ecxpun"><span style="font-size:10.0pt;font-family:"Courier New";">-</span></span><span class="ecxpln"><span style="font-size:10.0pt;font-family:"Courier New";">kvm
lrwxrwxrwx </span></span><span class="ecxlit"><span style="font-size:10.0pt;font-family:"Courier New";">1</span></span><span class="ecxpln"><span style="font-size:10.0pt;font-family:"Courier New";"> root root
</span></span><span class="ecxlit"><span style="font-size:10.0pt;font-family:"Courier New";">33</span></span><span class="ecxpln"><span style="font-size:10.0pt;font-family:"Courier New";">
</span></span><span class="ecxtyp"><span style="font-size:10.0pt;font-family:"Courier New";">Feb</span></span><span class="ecxpln"><span style="font-size:10.0pt;font-family:"Courier New";">
</span></span><span class="ecxlit"><span style="font-size:10.0pt;font-family:"Courier New";">19</span></span><span class="ecxpln"><span style="font-size:10.0pt;font-family:"Courier New";">
</span></span><span class="ecxlit"><span style="font-size:10.0pt;font-family:"Courier New";">15</span></span><span class="ecxpun"><span style="font-size:10.0pt;font-family:"Courier New";">:</span></span><span class="ecxlit"><span style="font-size:10.0pt;font-family:"Courier New";">25</span></span><span class="ecxpln"><span style="font-size:10.0pt;font-family:"Courier New";">
</span></span><span class="ecxpun"><span style="font-size:10.0pt;font-family:"Courier New";">/</span></span><span class="ecxpln"><span style="font-size:10.0pt;font-family:"Courier New";">usr</span></span><span class="ecxpun"><span style="font-size:10.0pt;font-family:"Courier New";">/</span></span><span class="ecxpln"><span style="font-size:10.0pt;font-family:"Courier New";">libexec</span></span><span class="ecxpun"><span style="font-size:10.0pt;font-family:"Courier New";">/</span></span><span class="ecxpln"><span style="font-size:10.0pt;font-family:"Courier New";">qemu</span></span><span class="ecxpun"><span style="font-size:10.0pt;font-family:"Courier New";">-</span></span><span class="ecxpln"><span style="font-size:10.0pt;font-family:"Courier New";">kvm
</span></span><span class="ecxpun"><span style="font-size:10.0pt;font-family:"Courier New";">-></span></span><span class="ecxpln"><span style="font-size:10.0pt;font-family:"Courier New";">
</span></span><span class="ecxstr"><span style="font-size:10.0pt;font-family:"Courier New";">/usr/</span></span><span class="ecxkwd"><span style="font-size:10.0pt;font-family:"Courier New";">local</span></span><span class="ecxpun"><span style="font-size:10.0pt;font-family:"Courier New";">/</span></span><span class="ecxpln"><span style="font-size:10.0pt;font-family:"Courier New";">bin</span></span><span class="ecxpun"><span style="font-size:10.0pt;font-family:"Courier New";">/</span></span><span class="ecxpln"><span style="font-size:10.0pt;font-family:"Courier New";">qemu</span></span><span class="ecxpun"><span style="font-size:10.0pt;font-family:"Courier New";">-</span></span><span class="ecxpln"><span style="font-size:10.0pt;font-family:"Courier New";">system</span></span><span class="ecxpun"><span style="font-size:10.0pt;font-family:"Courier New";">-</span></span><span class="ecxpln"><span style="font-size:10.0pt;font-family:"Courier New";">x86_64</span></span><span style="font-family:"Calibri","sans-serif";"></span></p>
<pre><br><span class="ecxpln">But when I try to start VM, I get following error:</span><br><br><span class="ecxpln">WARNING nova.virt.disk.api [req-7dfd6cf1-db21-403d-abbf-ccb5f0273a6a </span><br><span class="ecxpln">b829b65d0675416198f9e4838b5009e2 9a2e060772204260b53b52ea1c12db97] </span><br><span class="ecxpln">Ignoring error injecting data into image </span><br><span class="ecxpln">(Error mounting /var/lib/nova/instances/07c0898e-7d75-448d-b4fe-2c37f681b846/disk </span><br><span class="ecxpln">with libguestfs (child process died unexpectedly))</span><br><br><span class="ecxpln">The full error log is <a href="http://pastebin.com/raw.php?i=FD8N47mk" target="_blank">here</a>.</span><br><br><span class="ecxpln">Output of libguestfs-test-tool is <a href="http://pastebin.com/raw.php?i=EKWQWH1y" target="_blank">here</a>.</span><br><br><span class="ecxpln">Regards,</span></pre>
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