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

[Gémes Géza <geza@xxxxxxxxxxx>]

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
http://community.citrix.com/display/ocb/2008/07/02/Installing+Ubuntu+on+XenServer
for the xe commands to change from HVM to PV.

Regards

Geza
>> 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
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users