[Xen-users] Re: [Xen-devel] strange ethtool output in xen enviro

To:	Satish Chowdhury <satish.chowdhury@xxxxxxxxxxxxxxxxxx>
Subject:	[Xen-users] Re: [Xen-devel] strange ethtool output in xen environment
From:	Fasiha Ashraf <feehapk@xxxxxxxxxxx>
Date:	Fri, 13 Nov 2009 14:14:12 +0530 (IST)
Cc:	xen <xen-devel@xxxxxxxxxxxxxxxxxxx>, xen-users@xxxxxxxxxxxxxxxxxxx
Delivery-date:	Fri, 13 Nov 2009 00:45:03 -0800
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Ok thanks. In case of paravirt guests, are they using the same link(interface) as my dom0?

Regards,
Fasiha Ashraf

--- On Fri, 13/11/09, Satish Chowdhury <satish.chowdhury@xxxxxxxxxxxxxxxxxx> wrote:

From: Satish Chowdhury <satish.chowdhury@xxxxxxxxxxxxxxxxxx>
Subject: Re: [Xen-devel] strange ethtool output in xen environment
To: "Fasiha Ashraf" <feehapk@xxxxxxxxxxx>
Cc: "xen" <xen-devel@xxxxxxxxxxxxxxxxxxx>, xen-users@xxxxxxxxxxxxxxxxxxx
Date: Friday, 13 November, 2009, 11:27 AM

On Thu, Nov 12, 2009 at 6:29 PM, Fasiha Ashraf <feehapk@xxxxxxxxxxx> wrote:

I want to check the speed like features of my Ethernet in dom0 and domUs. But in virtualized environment it gives strange output why is that so? how to check it otherwise?
Non-virtualized FC11
[root@fasiha home]# ethtool eth0
Settings for eth0:
    Supported ports: [ TP ]
    Supported link modes:   10baseT/Half 10baseT/Full
                            100baseT/Half 100baseT/Full
                            1000baseT/Half 1000baseT/Full
    Supports auto-negotiation: Yes
    Advertised link modes: 10baseT/Half 10baseT/Full
                            100baseT/Half 100baseT/Full
                            1000baseT/Half 1000baseT/Full
    Advertised auto-negotiation: Yes
    Speed: 100Mb/s
    Duplex: Full
    Port: Twisted Pair
    PHYAD: 1
    Transceiver: internal
    Auto-negotiation: on
    Supports Wake-on: g
    Wake-on: g
    Current message level: 0x000000ff (255)
    Link detected: yes

Xen Dom0
[root@Server1-FC11 ~]# ethtool eth0
Settings for eth0:
    Link detected: yes

eth0 is bridge interface. peth0 is the physical interface.

[root@Server1-FC11 ~]# mii-tool eth0
SIOCGMIIPHY on 'eth0' failed: Operation not supported

Xen DomU
[root@F11-G1S1 /]# ethtool eth0
Settings for eth0:
    Link detected: yes

You are using para-VM, use HVM to see a emulated device and the link speed.

Regards
Fasiha Ashraf

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[Xen-users] Re: [Xen-devel] strange ethtool output in xen environment