KVM: Yield poor in the network of the virtual machines

Finally we decide and we already have the updated house servant!! The hardware that runs at present is:

• CPU: AMD Phenom (tm) 8450 Triple-Core Processor
• RAM: 4 x 1GiB Kingston DDR2 800MHz
• HD: 2 x 200GiB Digital Western
• Mobo: Gigabyte GA-MA78GM-S2H

We might have started the system that we had installed since the previous processor also belonged to the family x86_64 but we decide to realize a new installation since we wanted to mount servants virtualizados as what the system with the hypervisor, in this case KVM, does not need to have everything what had the ancient servant.

We already have more or less the mounted structure, the host of the machines and a virtual one covering Gentoo. The virtual one will be the one that really replaces the old servant. At the moment it already has installed iSCSI client, bind (DNS), dhcpd, Apache + php … De momento ya tiene instalado cliente de iSCSI, bind (DNS), dhcpd, apache + php…

We use the iSCSI client to tune in to the host that is exporting a logical volume of 40GiB for iSCSI and we will use it like / home in the virtual machine. Thus if for something like that we should lose the virtual machine the home would be still intact in the host.

On what yes we wanted to comment like something to stand out negatively on KVM is the use of the driver realtek 8139 for defect in the virtual cards of network, we have had enough problems of yield, lost of connectivity, etc … but we met on the solution and this is to specify another driver in the definition of the card of network, the driver is e1000 or also known like Intel (R) PRO/1000. We have been proving it for a few hours putting it to the same tests as the Realtek and it has overcome them with big results and stability. Completely recommended! Totalmente recomendado!

The way of adding the driver is:

# virsh edit nombre_vm
....
<interface type='bridge'&gt>
<mac address='52:54:00:cc:e9:32'/>
<source bridge='br0'/>
<target dev='vnet1'/>
<model type='e1000'/>
</interface>
...


We begin the virtual machine again and we already have the new card available

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Tags: AMD, Gentoo, home, KVM, Linux, Realtek, servant

This entry was posted on 2009/03/29 at 2009/03/29 and is filed under Gentoo / Sabayon, Linux, Operating systems, buys, personnel. You dog follow any responses to this entry through the RSS 2.0 feed.