"brctl show" shows the virtual network interface eth0 of domain ID 2 (of Slackware64 13.0 HVM) added to the ethernet bridge eth0 in dom0.

[root <at> fedora11-x86-64-host xen]# brctl show
bridge name    bridge id        STP enabled    interfaces
eth0                                      no                     peth0
                                                                     tap2.0
                                                                     vif2.0

-rwxr-xr-x  1 root root    1289 2009-11-01 13:17 qemu-dm-slackware64.log

domid: 2
qemu: the number of cpus is 2
config qemu network with xen bridge for  tap2.0 eth0
Watching /local/domain/0/device-model/2/logdirty/next-active
Watching /local/domain/0/device-model/2/command
qemu_map_cache_init nr_buckets = 10000 size 4194304
shared page at pfn feffd
buffered io page at pfn feffb
Guest uuid = 05686adf-dd94-b685-2a2b-112890bfee1d
Time offset set 0
cirrus_vga_enabled
populating video RAM at ff000000
mapping video RAM from ff000000
Register xen platform.
Done register platform.
xs_read(/vm/05686adf-dd94-b685-2a2b-112890bfee1d/log-throttling): read error
platform_fixed_ioport: changed ro/rw state of ROM memory area. now is rw state.
xs_read(/local/domain/0/device-model/2/xen_extended_power_mgmt): read error
xs_read(): vncpasswd get error. /vm/05686adf-dd94-b685-2a2b-112890bfee1d/vncpasswd.
medium change watch on `hdc' (index: 1): /media/hitachi/slackware64-13.0-install-dvd.iso
I/O request not ready: 0, ptr: 0, port: 0, data: 0, count: 0, size: 0
I/O request not ready: 0, ptr: 0, port: 0, data: 0, count: 0, size: 0
cirrus vga map change while on lfb mode
mapping vram to e0000000 - e0400000
platform_fixed_ioport: changed ro/rw state of ROM memory area. now is rw state.
platform_fixed_ioport: changed ro/rw state of ROM memory area. now is ro state.

--
Mr. Teo En Ming (Zhang Enming) Dip(Mechatronics) BEng(Hons)(Mechanical Engineering)
Alma Maters:
(1) Singapore Polytechnic
(2) National University of Singapore
My blog URL: http://teo-en-ming-aka-zhang-enming.blogspot.com
My Youtube videos: http://www.youtube.com/user/enmingteo
Email: space.time.universe <at> gmail.com
MSN: teoenming <at> hotmail.com
Mobile Phone (SingTel): +65-9648-9798
Mobile Phone (Starhub Prepaid): +65-8369-2618
Age: 31 (as at 30 Oct 2009)
Height: 1.78 meters
Race: Chinese
Dialect: Hokkien
Street: Bedok Reservoir Road
Country: Singapore

On Sun, Nov 1, 2009 at 4:32 PM, Mr. Teo En Ming (Zhang Enming) <space.time.universe <at> gmail.com> wrote:

Hi,

I have just installed Slackware64 13.0 Linux as a HVM guest with Xen 3.5-unstable changeset 20143 pv-ops dom0 kernel 2.6.31.4. For more details, please refer to the following link:

http://enmingteo.wordpress.com/2009/11/01/picture-tutorial-how-to-setup-slackware64-13-0-hvm-domu-with-xen-3-5-unstable-pv-ops-dom0-kernel-2-6-31-4-in-fedora-11-x86-64-dom0/

There are 83 screenshots so far at this moment.

I have encountered a problem with the virtual network interface eth0 in the Slackware virtual machine. According to Slackware, there's no such interface.

lspci -v output shows a Realtek virtual ethernet controller by Xensource.

The kernel model 8139too has been loaded. lsmod shows it.

I have checked /etc/rc.d/rc.inet1.conf and eth0 is configured for DHCP. Windows XP HVM virtual network interface works for DHCP.

Then I tried to restart the networking subsystem by issuing the following commands:

# /etc/rc.d/rc.inet1 stop

# /etc/rc.d/rc.inet1 start

"ifconfig -a" output only shows up loopback interface lo and not eth0.

Screenshots pertaining to the problem are here:

http://enmingteo.files.wordpress.com/2009/11/slackware64-82.png

http://enmingteo.files.wordpress.com/2009/11/slackware64-83.png

Please advise.

Thank you.

--
Mr. Teo En Ming (Zhang Enming) Dip(Mechatronics) BEng(Hons)(Mechanical Engineering)
Alma Maters:
(1) Singapore Polytechnic
(2) National University of Singapore
My blog URL: http://teo-en-ming-aka-zhang-enming.blogspot.com
My Youtube videos: http://www.youtube.com/user/enmingteo
Email: space.time.universe <at> gmail.com
MSN: teoenming <at> hotmail.com
Mobile Phone (SingTel): +65-9648-9798
Mobile Phone (Starhub Prepaid): +65-8369-2618
Age: 31 (as at 30 Oct 2009)
Height: 1.78 meters
Race: Chinese
Dialect: Hokkien
Street: Bedok Reservoir Road
Country: Singapore

One important point to note is that the default Linux sar interval is an unhelpful ten minutes. A better default is five seconds, dropping to ine second to investigate erratic performance issues. This doesn't cause a substantive IO hit but it does use a lot of disk space.

Sent from my iPhone

On Oct 30, 2009, at 3:59 PM, Peter Viskup <skupko.sk <at> gmail.com> wrote:

We are using Munin for simple monitoring of system resources.
I already reported one minor issue with iostat Munin plugin [1]. This is the only one issue we were experiencing with Munin.
I will recommend you Ganglia [2] if you need more sophisticated monitoring tool. I am not sure about the support of Xen domU's in Ganglia.

[1] http://munin-monitoring.org/ticket/719
[2] http://ganglia.sourceforge.net

Best regards,
Peter Viskup

rajan chandi wrote:

Hi All,

What is the best way to remotely monitor/administer a group of xen domUs across a network?

We're planning to deploy a few H/W servers with paravirtualized domUs.

What are the best alternatives? What works and What doesn't?

Share your experiences.

Cheers
Rajan
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Hi,
Can someone throw light on whether thin-provisioning, like in VmWare
(http://www.vmware.com/products/vstorage-thin-provisioning/)
possible in Xen. If yes how??

Thanks
Abhi

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