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List:       xen-users
Subject:    [Xen-users] The problem of max number of PV guests in ubuntu host
From:       zhiyong ye <zhiyong.ye1 () gmail ! com>
Date:       2018-01-31 13:16:56
Message-ID: CANWWAynprKn8m-hrJKJJnXV5wPr42hA=ok_S497jXYXB3umOBw () mail ! gmail ! com
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Hi,
     What I want to do is concurrent running 64 paravirtualized guests on
one physical machine and I can successful deploy 30 PV guests. But I'm
experiencing problems when trying to deploy more than 30 PV guests. No
error appear in console and no relevant messages in logs I found. I'm sure
there are enough resources but DomU dies immediately after create.

Follow xl-guest log:

> Waiting for domain ubuntu-pv-60 (domid 55) to die [pid 11873]
> Domain 55 has shut down, reason code 3 0x3
> Action for shutdown reason code 3 is destroy
> Domain 55 needs to be cleaned up: destroying the domain
> Done. Exiting now


Each guest config is the same as follow:

> name = "ubuntu-pv-1"
> bootloader = "pygrub"
> memory = 256
> vcpus = 1
> vif = [ 'bridge=xenbr0' ]
> disk = [ 'file:/home/ye/ubuntu-pv/ubuntu-pv-1/ubuntu-pv-1.img,xvda,rw' ]
> pci_permissive = 1



 I'm running in Ubuntu 14 using Xen-4.6. I have tested in other machine
using the same environment but encountering the same problem.

[Attachment #5 (text/html)]

<div dir="ltr"><div>Hi,</div><div>        What I want to do is concurrent running 64 \
paravirtualized guests on one physical machine and I can successful deploy 30 PV \
guests. But I&#39;m experiencing problems when trying to deploy more than 30 PV \
guests. No error appear in console and no relevant messages in logs I found. I&#39;m \
sure there are enough resources but DomU dies immediately after \
create.<br></div><div><br></div><div>Follow xl-guest log:</div><blockquote \
class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid \
rgb(204,204,204);padding-left:1ex"><font color="#0000ff">Waiting for domain \
ubuntu-pv-60 (domid 55) to die [pid 11873]<br>Domain 55 has shut down, reason code 3 \
0x3<br>Action for shutdown reason code 3 is destroy<br>Domain 55 needs to be cleaned \
up: destroying the domain<br>Done. Exiting \
now</font></blockquote><div><br></div><div>Each guest config is the same as \
follow:</div><blockquote class="gmail_quote" style="margin:0px 0px 0px \
0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><font \
color="#0000ff">name = &quot;ubuntu-pv-1&quot;<br>bootloader = &quot;pygrub&quot;  \
<br>memory = 256<br>vcpus = 1<br>vif = [ &#39;bridge=xenbr0&#39; ]<br>disk = [ \
&#39;file:/home/ye/ubuntu-pv/ubuntu-pv-1/ubuntu-pv-1.img,xvda,rw&#39; \
]<br>pci_permissive = 1    </font></blockquote><div><br></div><div><br></div><div>  \
I&#39;m running in Ubuntu 14 using Xen-4.6. I have tested in other machine using the \
same environment but encountering the same problem.</div></div>


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