Hello Sanjay,

What is the hypervisor, version you are using? If its KVM check whether the 
memory ballooning configuration is applied correctly and working as expected 
since you are using over-provisioning.

You could run ‘virsh dumpxml vm-name’ on the KVM as Vivek mentioned and look at 
the below values:


<memory unit='KiB'>1048576</memory>

  <currentMemory unit='KiB'>524288</currentMemory>

You could look at the same using ‘virsh dominfo vm-name’ as well.  I am not 
sure about the status of the ballooning configuration, hence please check that 
in the XML output. [1]

https://www.linux-kvm.org/page/Projects/auto-ballooning


-Jithin

From: Vivek Kumar <[email protected]>
Date: Thursday, 4 May 2023 at 2:09 PM
To: [email protected] <[email protected]>
Cc: [email protected] <[email protected]>
Subject: Re: Router VM fails to boot with kernel panic when overprovisioinig is 
> 1
Hello Sanjay,

When you are doing over provisioning specially for memory, just go to the KVM 
node and see the output of dumpxml, you will see the memory assigned to the KVM 
guest divided by over provisioning factor, which means no suitable memory for 
OS to run ( if we use default offering ) ,

So try to increase the RAM in default offering or create a larger offering for 
VR.



Vivek Kumar
Sr. Manager - Cloud & DevOps
TechOps | Indiqus Technologies

[email protected] <mailto:[email protected]>
        www.indiqus.com<http://www.indiqus.com> <https://www.indiqus.com/>





 

> On 02-May-2023, at 1:12 PM, Sanjay Kumar <[email protected]> wrote:
>
> Hi All,
>
> When overprovisioning factors are > 1, the virtual router vm  is not able
> to boot and ends up in a kernel panic.
>
> ACS_Version: 4.18.0
> Storage: NFS
>
> Any help would be really appreciated. Thank you!
>
> With Regards,
> S Kumar


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