Re: [Xen-users] Re: Problem on slow keystroke response - guest on Xen box

[Stephen Liu <satimis@xxxxxxxxx>]

--- Stephen Liu <satimis@xxxxxxxxx> wrote:

> 
> --- Javier Barroso <javibarroso@xxxxxxxxx> wrote:
> 
> > Hi Stephen (sorry, I should responsed to the list ...)
> 
> 
> Hi Javier,
> 
> 
> Never mind.  I'm now replying your mail cc xen-user mailing list.
> 
> 
> > On Tue, Dec 2, 2008 at 9:36 AM, Stephen Liu <satimis@xxxxxxxxx>
> > wrote:
> > 
> > > Hi Javier,
> > >
> > >
> > > Thanks for your advice.
> > >
> > >
> > > --- Javier Barroso <javibarroso@xxxxxxxxx> wrote:
> > >
> > > > On Fri, Nov 28, 2008 at 2:32 AM, Stephen Liu
> <satimis@xxxxxxxxx>
> > > > wrote:
> > > >
> > > > > Hi folks,
> > > > >
> > > > >
> > > > > Host - Debian Etch
> > > > > Guests - Debian Etch.
> > > > >
> > > > >
> > > > > Performed following steps to create duplicate guest, a mail
> > server.
> > > > >
> > > > >
> > > > > 1)
> > > > > # cp /etc/xen/guest-1.cfg /etc/xen/guest-2.cfg
> > > > >
> > > > >
> > > > > edit guest-2.cfg changing the settings of:-
> > > > > disk =
> > ['file:/vserver/domains/guest-2_directory/disk.img,hda1,w',
> > > > > 'file:/vserver/domains/guest-2_directory/swap.img,hda2,w']
> > > >
> > > > I'd recomend lvm better than files for perfomance
> > >
> > >
> > > Could you please explain in more detail?  Thanks.
> > 
> > 
> > In xen list commets it:
> 
>
http://lists.xensource.com/archives/cgi-bin/mesg.cgi?a=xen-users&i=ed123fa30807311235i747a62aamcfdada5860d1ea1c%40mail.gmail.com
> 
> 
> Thanks for your link.  I have bonnie++ installed.
> 
> 
> To check disk image on my system whether;
> 
> # mount /vserver/domains/image_directory/disk.img /media/test1
> 
> 
> and then run;
> # bonnie++ -s 5808 -d /media/test1 -u root
> ???
> 
> (remark : file size should be double RAM for good results)
> 
> 
> Can I create LVM image on my system?  If YES please advise how.  TIA
> 
> 
> - snip -
> 
> 
> > > I don't have those directories/file here.
> > >
> > >
> > > # find / -name udev -type d
> > > # find / -name rules.d -type d
> > > # locate z25_network_persistent
> > >
> > > All without printout.
> > >
> > >
> > > OS - Debian Etch
> > >
> > >
> > > > > 4)
> > > > > Restart guest-2 and login with new data.  The new mail
> server,
> > > > guest-2,
> > > > > is working.
> > > > >
> > > > >
> > > > > But occasionally I found running both guest-1 and guest-2
> > > > > simultaneously slow response to keystroke will occur on
> either
> > of
> > > > them.
> > > > >  I have to sit back and wait.  Please advise where shall I
> > check
> > > > and
> > > > > how to fix this problem?  TIA
> > > >
> > > > Are they Only slow when you have both system up ?
> > >
> > >
> > > Not only slow on keystroke response but the mouse pointer seems
> > > vibrating not under control.  After removing the mac address on
> the
> > > .cfg file problem gone.  Each time on starting the guest a
> dynamic
> > mac
> > > address will be assigned.
> > 
> > But if you write two macs diferents on cfg your machines should be
> > fine,
> > without a new dynamic mac every time.
> > 
> > With udev (xen-tools won't install it on etch) package installed:
> > # cat  /etc/udev/rules.d/z25_persistent-net.rules
> > # This file was automatically generated by the
> > /lib/udev/write_net_rules
> > # program, probably run by the persistent-net-generator.rules rules
> > file.
> > #
> > # You can modify it, as long as you keep each rule on a single
> line.
> > # MAC addresses must be written in lowercase.
> > 
> > SUBSYSTEM=="net", DRIVERS=="?*",
> ATTRS{address}=="00:16:3e:22:61:ce",
> > NAME="eth0"
> 
> 
> Installed udev on repo.
> 
> 
> # cat /etc/udev/rules.d/z25_persistent-net.rules
> # This file was automatically generated by the
> /lib/udev/write_net_rules
> # program, probably run by the persistent-net-generator.rules rules
> file.
> #
> # You can modify it, as long as you keep each rule on a single line.
> # MAC addresses must be written in lowercase.
> 
> SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:16:3e:64:8f:5e",
> NAME="eth0"
> 
> 
> Whether put 00:16:3e:64:8f:5e on /etc/xen/*.cfg file as;
> 
> vif  = [ 'ip=192.168.0.211', '00:16:3e:64:8f:5e' ]
> ???
> 
> 
> TIA
> 
> 
> B.R.
> Stephen L


Hi Javier,


Further to my late posting;


After installing udev on next boot the guest was completely cut off
from outside world.  It can't be ssh-connected remotely.  After
starting it with "xm console ....." it can't ping the host, other
guests and Internet.


# /etc/init.d/networking restart
Reconfiguring network interfaces...SIOCSIFADDR: No such device
eth0: ERROR while getting interface flags: No such device
SIOCSIFNETMASK: No such device
eth0: ERROR while getting interface flags: No such device
Failed to bring up eth0.


# find /sys -iname *eth*
/sys/class/net/eth5
/sys/devices/xen/vif-0/net:eth5


I was compelled to remove udev.


# apt-get remove udev
# rm -rf /etc/udev
# rm /etc/init.d/udev
# reboot


Then it returns normal.  I think the guests must run dynamic MAC
address.


B.R.
Stephen L

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