This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
Home Products Support Community News


Re: [Xen-users] XCP jumbo frames in vm

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] XCP jumbo frames in vm
From: Gémes Géza <geza@xxxxxxxxxxx>
Date: Thu, 19 May 2011 12:19:20 +0200
Delivery-date: Thu, 19 May 2011 03:21:06 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <BANLkTimcQJ4Gf2t_j_AW94Gt0vH+EG555Q@xxxxxxxxxxxxxx>
List-help: <mailto:xen-users-request@lists.xensource.com?subject=help>
List-id: Xen user discussion <xen-users.lists.xensource.com>
List-post: <mailto:xen-users@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=unsubscribe>
References: <BANLkTimzQKOSz7f4u_fgn0O=RZF8-D_7gQ@xxxxxxxxxxxxxx> <BANLkTimSeM27Q6f=aAjXxUSnB3HuAKqP7w@xxxxxxxxxxxxxx> <BANLkTimcQJ4Gf2t_j_AW94Gt0vH+EG555Q@xxxxxxxxxxxxxx>
Sender: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv: Gecko/20110424 Thunderbird/3.1.10
2011-05-19 00:19 keltezéssel, Gregory Durham írta:
> Thanks for the heads up, ill try it out. Is it better to convert an
> existing vm to PV or just start from scratch?
> Thanks again!
> Greg
> On Wed, May 18, 2011 at 3:05 PM, Dustin Marquess <dmarquess@xxxxxxxxx> wrote:

That depends on how long was to configure everything.
For converting a CentOS VM from HVM to PV you would have to install
kernel-xen, make sure that it is the first entry in /boot/grub/menu.lst,
and then follow
for the xe commands to change from HVM to PV.


>> Is there a reason you're not using PV? The RealTek emulated NIC is buggy and
>> horrible, and I wish XenServer/XCP would let you change it like normal Xen.
>> I believe Citrix's stance was that they only supported HVM (Windows) VMs
>> when running their PV drivers so that the issue was moot.
>> You might be able to hack the code you let you use e1000, which might work,
>> but you're really better off using PV.
>> -Dustin
>> On May 18, 2011 1:36 PM, "Gregory Durham" <gregory.durham@xxxxxxxxx> wrote:
>>> Hello all,
>>> Not sure if I am completely missing something but here goes. I have
>>> XCP 1.0 running without any issues. I have the mtu set on both the
>>> storage network, the corresponding PIF, and the VIF to 9000 and when
>>> displayed in ifconfig it shows that this is indeed true. I have
>>> several CentOs 5.6 VMs running in HVM mode (i.e. no xen kernel) which
>>> attach to the the storage network through these VIFs and when I
>>> attempt to enable jumbo frames, I receive: SIOCSIFMTU: Invalid
>>> argument, I receive the same error from ifconfig eth1 mtu 9000 and
>>> making the change in the ifcfg-eth1 config file. This is the driver I
>>> have running from lspci -vv
>>> 00:04.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
>>> RTL-8139/8139C/8139C+ (rev 20)
>>> Subsystem: XenSource, Inc. Device 0001
>>> Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr-
>>> Stepping- SERR- FastB2B- DisINTx-
>>> Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
>>> <TAbort- <MAbort- >SERR- <PERR- INTx-
>>> Latency: 64, Cache Line Size: 32 bytes
>>> Interrupt: pin A routed to IRQ 177
>>> Region 0: I/O ports at c100 [size=256]
>>> Region 1: Memory at f3001000 (32-bit, non-prefetchable) [size=256]
>>> Kernel driver in use: 8139cp
>>> Kernel modules: 8139too, 8139cp
>>> If I am doing something wrong, please let me know. Or, if it is just
>>> plain not possible. I am pulling my hair out.
>>> Thanks,
>>> Greg
>>> _______________________________________________
>>> Xen-users mailing list
>>> Xen-users@xxxxxxxxxxxxxxxxxxx
>>> http://lists.xensource.com/xen-users
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users

Xen-users mailing list

<Prev in Thread] Current Thread [Next in Thread>