[ovirt-users] editing VM settting

Tuesday, 12 April 2016

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I'm trying to change the way a VM is booted, I want an initial setup =
with kernel, initrd and cmdline given and later removed.

Using the GUI it works fine.

But I have no success using the python API. And running with debug =
enable, I get this strange result :

...
 PUT /api/vms/8ced0f81-03fd-415b-a8ef-60141de7eeca HTTP/1.1 ...
...
     <os type=3D"rhel_7x64">
         <boot dev=3D"hd"/>
         <boot dev=3D"network"/>
     </os> ...
<     <os type=3D"rhel_7x64">
<         <boot dev=3D"hd"/>
<         <boot dev=3D"network"/>
<         <kernel>.../vmlinuz</kernel>
<         <initrd>.../initrd.img</initrd>
<         <cmdline>....</cmdline>
<     </os>

I got this with:
os_params =3D  params.OperatingSystem()
os_params.set_boot(old_os_params.get_boot())
os_params.set_type(old_os_params.get_type())
os_params.set_kernel(None)
os_params.set_initrd(None)
os_params.set_cmdline(None)
self.broker.set_os(os_params)
self.broker.update()
trying to set kernel and others to empty string is not really better:
...
     <os type=3D"rhel_7x64">
         <boot dev=3D"hd"/>
         <boot dev=3D"network"/>
         <kernel></kernel>
         <initrd></initrd>
         <cmdline></cmdline>
     </os> ...
<     <os type=3D"rhel_7x64">
<         <boot dev=3D"hd"/>
<         <boot dev=3D"network"/>
<         <kernel></kernel>
<         <initrd></initrd>
<         <cmdline></cmdline>
<     </os>

What kind of "magic values" the engine uses to removes values ?

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<html><head><meta http-equiv=3D"Content-Type"
content=3D"text/html =
charset=3Dus-ascii"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" =
class=3D"">I'm trying to change the way a VM is booted, I want an =
initial setup with kernel, initrd and cmdline given and later =
removed.<div class=3D""><br class=3D""></div><div
class=3D"">Using the =
GUI it works fine.</div><div class=3D""><br
class=3D""></div><div =
class=3D"">But I have no success using the python API. And running with =
debug enable, I get this strange result :</div><div
class=3D""><br =
class=3D""></div><div class=3D""><div
style=3D"margin: 0px; font-size: =
11px; font-family: Menlo;" class=3D"">&gt; PUT =
/api/vms/8ced0f81-03fd-415b-a8ef-60141de7eeca HTTP/1.1</div></div><div =
class=3D"">...</div><div class=3D""><div
style=3D"margin: 0px; =
font-size: 11px; font-family: Menlo;" class=3D"">&gt; &nbsp;
&nbsp; =
&lt;os type=3D"rhel_7x64"&gt;</div><div style=3D"margin:
0px; font-size: =
11px; font-family: Menlo;" class=3D"">&gt; &nbsp; &nbsp;
&nbsp; &nbsp; =
&lt;boot dev=3D"hd"/&gt;</div><div style=3D"margin: 0px;
font-size: =
11px; font-family: Menlo;" class=3D"">&gt; &nbsp; &nbsp;
&nbsp; &nbsp; =
&lt;boot dev=3D"network"/&gt;</div><div style=3D"margin:
0px; font-size: =
11px; font-family: Menlo;" class=3D"">&gt; &nbsp; &nbsp; =
&lt;/os&gt;</div></div><div
class=3D"">...</div><div class=3D""><div =
style=3D"margin: 0px; font-size: 11px; font-family: Menlo;" =
class=3D"">&lt; &nbsp; &nbsp; &lt;os
type=3D"rhel_7x64"&gt;</div><div =
style=3D"margin: 0px; font-size: 11px; font-family: Menlo;" =
class=3D"">&lt; &nbsp; &nbsp; &nbsp; &nbsp; &lt;boot
=
dev=3D"hd"/&gt;</div><div style=3D"margin: 0px; font-size:
11px; =
font-family: Menlo;" class=3D"">&lt; &nbsp; &nbsp;
&nbsp; &nbsp; =
&lt;boot dev=3D"network"/&gt;</div><div style=3D"margin:
0px; font-size: =
11px; font-family: Menlo;" class=3D"">&lt; &nbsp; &nbsp;
&nbsp; &nbsp; =
&lt;kernel&gt;.../vmlinuz&lt;/kernel&gt;</div><div
style=3D"margin: 0px; =
font-size: 11px; font-family: Menlo;" class=3D"">&lt; &nbsp;
&nbsp; =
&nbsp; &nbsp;
&lt;initrd&gt;.../initrd.img&lt;/initrd&gt;</div><div =
style=3D"margin: 0px; font-size: 11px; font-family: Menlo;" =
class=3D"">&lt; &nbsp; &nbsp; &nbsp; &nbsp; =
&lt;cmdline&gt;....&lt;/cmdline&gt;</div><div
style=3D"margin: 0px; =
font-size: 11px; font-family: Menlo;" class=3D"">&lt; &nbsp;
&nbsp; =
&lt;/os&gt;</div></div><div class=3D""><br
class=3D""></div><div =
class=3D"">I got this with:</div><div
class=3D""><pre =
style=3D"background-color: rgb(255, 255, 255); font-family: Menlo;" =
class=3D"">os_params =3D  params.OperatingSystem()<br =
class=3D"">os_params.set_boot(old_os_params.get_boot())<br =
class=3D"">os_params.set_type(old_os_params.get_type())<br =
class=3D"">os_params.set_kernel(<span style=3D"color:#000080;"
=
class=3D"">None</span>)<br
class=3D"">os_params.set_initrd(<span =
style=3D"color:#000080;" class=3D"">None</span>)<br =
class=3D"">os_params.set_cmdline(<span style=3D"color:#000080;"
=
class=3D"">None</span>)<br class=3D""><span
style=3D"color:#94558d;" =
class=3D"">self</span>.broker.set_os(os_params)<br
class=3D""><span =
style=3D"color:#94558d;"
class=3D"">self</span>.broker.update()<br =
class=3D""></pre><div class=3D"">trying to set kernel
and others to =
empty string is not really better:</div></div><div
class=3D""><div =
style=3D"margin: 0px; font-size: 11px; font-family: Menlo;" =
class=3D"">&gt; &nbsp; &nbsp; &lt;os
type=3D"rhel_7x64"&gt;</div><div =
style=3D"margin: 0px; font-size: 11px; font-family: Menlo;" =
class=3D"">&gt; &nbsp; &nbsp; &nbsp; &nbsp; &lt;boot
=
dev=3D"hd"/&gt;</div><div style=3D"margin: 0px; font-size:
11px; =
font-family: Menlo;" class=3D"">&gt; &nbsp; &nbsp;
&nbsp; &nbsp; =
&lt;boot dev=3D"network"/&gt;</div><div style=3D"margin:
0px; font-size: =
11px; font-family: Menlo;" class=3D"">&gt; &nbsp; &nbsp;
&nbsp; &nbsp; =
&lt;kernel&gt;&lt;/kernel&gt;</div><div style=3D"margin:
0px; font-size: =
11px; font-family: Menlo;" class=3D"">&gt; &nbsp; &nbsp;
&nbsp; &nbsp; =
&lt;initrd&gt;&lt;/initrd&gt;</div><div style=3D"margin:
0px; font-size: =
11px; font-family: Menlo;" class=3D"">&gt; &nbsp; &nbsp;
&nbsp; &nbsp; =
&lt;cmdline&gt;&lt;/cmdline&gt;</div><div style=3D"margin:
0px; =
font-size: 11px; font-family: Menlo;" class=3D"">&gt; &nbsp;
&nbsp; =
&lt;/os&gt;</div></div><div
class=3D"">...</div><div class=3D""><div =
style=3D"margin: 0px; font-size: 11px; font-family: Menlo;" =
class=3D"">&lt; &nbsp; &nbsp; &lt;os
type=3D"rhel_7x64"&gt;</div><div =
style=3D"margin: 0px; font-size: 11px; font-family: Menlo;" =
class=3D"">&lt; &nbsp; &nbsp; &nbsp; &nbsp; &lt;boot
=
dev=3D"hd"/&gt;</div><div style=3D"margin: 0px; font-size:
11px; =
font-family: Menlo;" class=3D"">&lt; &nbsp; &nbsp;
&nbsp; &nbsp; =
&lt;boot dev=3D"network"/&gt;</div><div style=3D"margin:
0px; font-size: =
11px; font-family: Menlo;" class=3D"">&lt; &nbsp; &nbsp;
&nbsp; &nbsp; =
&lt;kernel&gt;&lt;/kernel&gt;</div><div style=3D"margin:
0px; font-size: =
11px; font-family: Menlo;" class=3D"">&lt; &nbsp; &nbsp;
&nbsp; &nbsp; =
&lt;initrd&gt;&lt;/initrd&gt;</div><div style=3D"margin:
0px; font-size: =
11px; font-family: Menlo;" class=3D"">&lt; &nbsp; &nbsp;
&nbsp; &nbsp; =
&lt;cmdline&gt;&lt;/cmdline&gt;</div><div style=3D"margin:
0px; =
font-size: 11px; font-family: Menlo;" class=3D"">&lt; &nbsp;
&nbsp; =
&lt;/os&gt;</div></div><div class=3D""><br
class=3D""></div><div =
class=3D"">What kind of "magic values" the engine uses to removes
values =
?</div><div class=3D""><br
class=3D""></div></body></html>=

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[ovirt-users] editing VM settting