Re: [ovirt-users] IP Address Stealing

[Subhendu Ghosh]

Not built into ovirt AFAIK,  but an ebtables rule can allow you to filter out 
mac+ip combinations 

Look at the anti-spoofing rules on ebtables.netfilter.org

It doesn't prevent the user adding it in the vm, but the infrastructure blocks 
it's usage.


From: Bill Bill 
Sent: Aug 3, 2016 22:40
To: users@ovirt.org
Subject: [ovirt-users] IP Address Stealing

Hello,

 

It is possible to prevent a VM from adding an IP? For example, if we provision 
a VM with one IP, if the user has root access they can simply add random IP’s 
from within the same range as sub interfaces: eth0:0 eth0:1 eth0:2 so on and so 
forth.

 

Subnetting is not ideal in this situation because it’s a huge waste of IP space.

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Re: [Users] which file system for shared disk?

[Subhendu Ghosh]

On 07/10/2013 07:53 AM, Piotr Szubiakowski wrote:
> Hi,
> gluster is good in scenario when we have many hosts with own storage and we
> aggregate these pieces it into one shared storage. In this situation data is
> transferred via Ethernet ore Infiniband. In our scenario we have centralized
> storage accedes via Fibre Channel. In this situation it would be more
> efficient when data would be transferred through FC.

For FC disk presented to all nodes in the cluster, why use a filesystem?
use LVM instead,

http://www.ovirt.org/Vdsm_Block_Storage_Domains

> 
> Thanks,
> Piotr
> 
> W dniu 10.07.2013 13:23, Chris Smith pisze:
>> Why not use gluster with xfs on the storage bricks?
>>
>> http://www.gluster.org/
>>
>> On Wed, Jul 10, 2013 at 7:15 AM, Piotr Szubiakowski
>>   wrote:
>>> Hi,
>>> we are developing an application where would be great if multiple host could
>>> have access to the same disk. I think that we can use features like shared
>>> disk or direct LUN to attach the same storage to multiple VM's. However to
>>> provide concurrent access to the resource, there should be a cluster file
>>> system used. The most popular open source cluster file systems are GFS2 and
>>> OCFS2. So my questions are:
>>>
>>> 1) Does anyone have share disk between VM's in oVirt? What fs did You used?
>>> 2) Is it possible to use GFS2 on VM's that are running on oVirt? Does anyone
>>> have run fencing mechanism with ovirt/libvirt?
>>>
>>> Many thanks,
>>> Piotr
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