Hello all, I know I have been bugging you recently with many questions but you guys have been so helpful which makes me greedy. Here is another one. I installed Xen 3.2.1 on 64 bit FC8. Now when I try to create a guest domain I always get the error: "Error: Device 0 (vif) could not be connected. Hotplug scripts not working" I got the same error ehrn I tried to create the guest with virt-install or even manually using "xm create". I have the same configuration on a 32-bit FC8 machine with nor problems. I also found several posts on the mailing list but none was useful to my problem. I tried both HVM and para-virtualized guests. I only got the HVM guests to run when I changed the parameter vif=[,,] to vif0=[,,]. But obviously I could not get the guest to use the network. When I used the same trick with my para-virtualized guest the kernel hangs during load time while it waits for "XENBUS" to start. I have udev installed on my machine. i really wonder why does in needs hotplug for!!! Any help?? Ahmed _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
<ramamurthy.suresh@wipro.com>
2008-Jun-24 08:56 UTC
[Xen-users] RE: Hotplug scripts not working.
Hi,
Please try creating a ramdisk with xennet and xenblk preload options and include
this ramdisk in VM configuration file. (you can use mkinitrd, man pages).
Regards,
Suresh.
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Today''s Topics:
1. Hotplug scripts not working. (amazab@ncsu.edu)
2. Where does Xen store its DomU-state saves? Partitioning and
LVM Question (Evan Miller)
3. Re: about module nVidia GeForce 8400 G in Xen (Igor Chubin)
4. RE: Multiple NIC and ports in XEN source and XEN enterprise
(Fischer, Anna)
5. xm console does not return a console (piyush masrani)
6. RE: xm console does not return a console (Kumar, Venkat)
----------------------------------------------------------------------
Message: 1
Date: Mon, 23 Jun 2008 19:55:21 -0400 (EDT)
From: amazab@ncsu.edu
Subject: [Xen-users] Hotplug scripts not working.
To: xen-users@lists.xensource.com
Message-ID: <35987.152.14.92.149.1214265321.squirrel@webmail.ncsu.edu>
Content-Type: text/plain;charset=iso-8859-1
Hello all,
I know I have been bugging you recently with many questions but you guys
have been so helpful which makes me greedy. Here is another one.
I installed Xen 3.2.1 on 64 bit FC8. Now when I try to create a guest
domain I always get the error:
"Error: Device 0 (vif) could not be connected. Hotplug scripts not
working"
I got the same error ehrn I tried to create the guest with virt-install or
even manually using "xm create". I have the same configuration on a
32-bit
FC8 machine with nor problems. I also found several posts on the mailing
list but none was useful to my problem.
I tried both HVM and para-virtualized guests. I only got the HVM guests to
run when I changed the parameter vif=[,,] to vif0=[,,]. But obviously I
could not get the guest to use the network. When I used the same trick
with my para-virtualized guest the kernel hangs during load time while it
waits for "XENBUS" to start.
I have udev installed on my machine. i really wonder why does in needs
hotplug for!!!
Any help??
Ahmed
------------------------------
Message: 2
Date: Mon, 23 Jun 2008 19:57:25 -0400
From: Evan Miller <forums.office@gmail.com>
Subject: [Xen-users] Where does Xen store its DomU-state saves?
Partitioning and LVM Question
To: xen-users@lists.xensource.com
Message-ID: <48603865.90109@gmail.com>
Content-Type: text/plain; charset=windows-1252; format=flowed
Hi everyone!
Where does Xen save the "DomU state saves"?
I have been trying to figure out the most time-proof partition scheme
for my set up and I was wondering if I could make the folder(?) where
Xen 3.2.1 save it''s DomU states saves (what is the right expression for
this?) and put it on its own LVM partition here is why:
I only have 2GB RAM on my ML570. I will be upgrading memory as I need
(up to 32GB).
If Xen saves its DomU-saves to the Dom0''s partition then as my server
receives more RAM and I will allocate more memory to DomUs that folder
with in Dom0 will expand to such large proportions that it chokes of
Dom0''s hard drive space and crash the system. If I have a LVM in an
automatic mode resizing the partitions as needed I should always be in
good shape when it comes to that.
Of course this could all be avoided if Xen saves the states to the DomU
partition and reads them from there accordingly. Somehow I suspect that
Xen saves the DomU state saves somewhere on the Dom0 partition by
default (if you only have a "/" partition containing the whole Dom0).
I''m still attempting to figure out the best partitioning scheme for my
boxes...any help would be appreciated.
Thank you in advance,
Sincerely,
Evan Miller
+++++++++++++++++++++++++++
Hello Friends,
After over 30 hours of scouring the web for a recent comprehensive guide of
installing Xen on Debian Etch I feel like I have no choice but to post here
(my first mailing list post!).
I found many good guides, but it seems that they all lack:
A. recommended partitioning scheme
and/or
B. LVM set up
**************************************
I was following the http://www.howtoforge.com/debian_etch_xen_3.1 guide and
everything went well for a while, but the [new] Xen version was incompatible
with some of the instructions so I set out to look for a more recent guide
and found out that there is a much easier way to install Xen (from sources)
now and that I should use LVM.
The above link was the only one that gave the detailed partitioning
recommendations I needed:
* /boot 150 MB (Primary) (Location for the new partition: Beginning) (ext3)
(Bootable flag: on <-- important, otherwise your system will not boot!)
* swap 1GB (Logical) (Location for the new partition: Beginning)
* / 3GB (Logical) (Location for the new partition: Beginning) (ext3)
* /vserver the rest (Logical) (Location for the new partition: Beginning)
(ext3)
Unfortunately it is missing instructions for using LVM.
This guide mentions LVM, but has proprietary partitioning scheme and old Xen
version: http://www.d7031.de/text/xen_with_lvm_under_etch.shtml
http://www.cosmocode.de/en/blogs/gohr/20070130123639/ - This guide gets very
close covering both, but it is outdated and I am wary about mixing the
original guide''s ( http://www.howtoforge.com/debian_etch_xen_3.1 )
partitioning scheme and this one.
I also was hoping to achieve the internal routing and the best guides that
seem to cover that are the original guide I mentioned and the
http://xgu.ru/wiki/Xenomips/en (later one is a bit beyond me at this time).
**************************************
I am sorry for the convoluted first post - I think it reflects my mind state
at this time! XD
I would like to introduce myself to all of you: My name is Evan, I am a *NIX
newbie, I have been "messing about" with Linux distos since 2001 and
about
as long with FreeBSD. Unfortunately I have not ventured far beyond GUI and
always came back to Windows XP.
Lately I was put in charge of creating a test set up for our startup so I
have been forced to learn many things at once while producing some sort of
positive results on a very tight schedule.
We have decided that a Xen setup running on top of Etch was the way to go,
but actually implementing such a setup has proven to be very challenging.
I would appreciate any help, but please keep in mind my limited linux and
non-gui experience (I''m just learning to appreciate vi).
**************************************
Hardware:
I have 2 Xen candidates:
1. ML570 2G Server with 4 2.4GHz Xeons, 2GB PC 2100 Ram (6GB more coming)
and 6 15k 73GB SCSI drives (and 6 more to come) running on the the LSI 320-2
controller in Raid0 soon to be backed up on to 2 SATA 2 1TB Drives running
off a SATA 300 Promise controller.
2. Intel Pentium D 820 (dual core 2.8GHz) based desktop with 1GB ram and
on-board sata 150 running a 240GB SATA drive (more drives and memory will be
added). The P5LP-LE motherboard (
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00864946&lc=en&cc=us
)
supports VT chips so at some point we may upgrade this box to Intel VT cpu
(I am not sure if I will have to reinstall the VT enabled Xen at that point
or not).
Eventually I would like to run a mix of:
http://lxer.com/module/forums/t/24435/ and http://xgu.ru/wiki/Xenomips/en
and have the ability to move live machines from the ML570 to the Desktop 820
D system at night to save on power.
**************************************
For now I would be happy with a solid partition recommendation to get me
started on the way to these goals.
I will start with the Desktop D 820 system with Etch running as Dom0 on a
250GB SATA drive.
I would like to eventually have a GUI access to managing Xen DomUs so I
thought I would mention this encase a 3GB root partition (
http://www.howtoforge.com/debian_etch_xen_3.1 ) would be too small.
Keeping all above in mind what would be the recommended partition scheme for
the 250GB drive?
**************************************
Thank you in advance,
Sincerely,
=)
Evan Miller
+++++++++++++++++++++++++++
------------------------------
Message: 3
Date: Tue, 24 Jun 2008 11:03:37 +0300
From: Igor Chubin <igor@chub.in>
Subject: Re: [Xen-users] about module nVidia GeForce 8400 G in Xen
To: Christopher Isip <cmisip@gmail.com>
Cc: ??!? Jansen <janseneric@gmail.com>, xen-users@lists.xensource.com,
xen-users-owner@lists.xensource.com
Message-ID: <20080624080337.GD10106@chub.in>
Content-Type: text/plain; charset=utf-8
On Mo, Jun 23, 2008 at 05:03:13 -0400, Christopher Isip
wrote:> On Mon, Jun 23, 2008 at 5:08 AM, â''¬(R)!(c) Jansen
<janseneric@gmail.com> wrote:
>
> > Thank you for the quick reply,
> > But does it work with the newest nvidia driver
> > (NVIDIA-Linux-x86-173.14.09.pkg1.run) or just with the driver that
shown in
> > it (NVIDIA-Linux-x86-1.0-9631-pkg1.run)?
> > I have installed the newest driver in the base kernel, I am afraid of
the
> > kernel panic with the xen kernel
> > Cause it seems that the newest driver must have a major modification
since
> > in which the driver mentioned that worked with xen kernel.
> >
> > Thank you very much once again
> > ERic Jansen
> >
> >
> > _______________________________________________
> > Xen-users mailing list
> > Xen-users@lists.xensource.com
> > http://lists.xensource.com/xen-users
> >
>
> It will work with the newest driver without any modifications. Just set
the
> environment variable.
You talk about
export IGNORE_XEN_PRESENCE=1
right?
I have downloaded drivers from the page:
http://www.nvidia.com/object/linux_display_ia32_173.14.09.html
and have tried to install it with the variable
IGNORE_XEN_PRESENCE set to 1.
export IGNORE_XEN_PRESENCE=1
sh NVIDIA-Linux-x86-173.14.09-pkg1.run --x-module-path=/usr/lib/xorg/modules/
I have got the same error message
"Xen was detected; I don''t want to continue"
or something like this.
Have you installed NVidia drivers in this way?
What is the kernel version on the system where you have installed
it?
May it be due to my kernel is too old?
$ uname -a
Linux cholpon 2.6.18-4-xen-686 #1 SMP Thu May 10 03:24:35 UTC 2007
i686 GNU/Linux
Any other ideas?
Thank you in advance.
>
> Chris
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
--
WBR, i.m.chubin
------------------------------
Message: 4
Date: Tue, 24 Jun 2008 08:03:01 +0000
From: "Fischer, Anna" <anna.fischer@hp.com>
Subject: RE: [Xen-users] Multiple NIC and ports in XEN source and XEN
enterprise
To: Venefax <venefax@gmail.com>
Cc: "D.Kalogeras@noc.ntua.gr" <D.Kalogeras@noc.ntua.gr>,
"xen-users@lists.xensource.com" <xen-users@lists.xensource.com>
Message-ID:
<0199E0D51A61344794750DC57738F58E3F6778F483@GVW1118EXC.americas.hpqcorp.net>
Content-Type: text/plain; charset="us-ascii"
> From: Venefax [mailto:venefax@gmail.com]
> Sent: 23 June 2008 12:12
> To: Fischer, Anna; D.Kalogeras@noc.ntua.gr
> Cc: xen-users@lists.xensource.com
> Subject: RE: [Xen-users] Multiple NIC and ports in XEN source and XEN
> enterprise
>
> I decided to assign a physical NIC to every DOMU, to minimize
> bottleneck,
> since my app is a telephony softswitch, and depends on network IO. I
> have 8
> NICS in the box and 8 softswitches.
>
> The question is, how can I do that?
A basic solution would be to create a bridge per physical NIC and then connect
the DomUs to those bridges. You could also use PCI passthrough - in that case
only the DomU would have access to the NICs and you would not see any traffic in
Dom0.
> Also, is there a way to measure the
> network IO that each domu is generating, using dom0. I mean, without
> installing any software on domu''s, only by looking at dom0?
> I have also heavy network traffic between domu''s. How can I
optimize
> that?
> Some of the domu''s are in different networks, and I noticed that
the
> packets
> go out on the internet and come back, which is ridiculous.
Not quite sure what you mean here... If you only do bridging in Dom0 and your
VMs are on different networks then packets may need to go out of Dom0 in order
to route them. But that depends on how you network is set up, it is not a Xen
issue. What setup do you run in your Dom0? Do you use the bridge?
> How can that
> path
> be shortened? I imagined that since the mac addresses are local, XEN
> would
> be able to send it directly to the destination, is that even possible?
Yes, for example, if all your guests are on the same networks then the bridge
would pass them directly to the correct destination. If you need to have the
guests on different networks then you could do routing in Dom0.
> Finally, what brands are there for Virtualization-aware NICs? Maybe I
> will
> buy one.
For example: Neterion X3100, Solarflare Solarstorm, Mellanox ConnectX EN.
------------------------------
Message: 5
Date: Tue, 24 Jun 2008 14:05:08 +0530
From: "piyush masrani" <masrani.piyush@gmail.com>
Subject: [Xen-users] xm console does not return a console
To: xen-users@lists.xensource.com
Message-ID:
<aefb6ea00806240135p5ff8303qdc008811a949ea27@mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"
Hi
I have installed xen 3.10 on ubuntu 7.10 (Gutsy Gibbon) through
repositories...
I followed the following link:
http://www.howtoforge.com/ubuntu-7.10-server-install-xen-from-ubuntu-repositories
I am able to create Guest VMs on it by using xen-create-image and able to
run them by using xm create. But i am not getting the console of the created
VMs( xm console is not working. Not even by using the option -c in xm
create)...The shell in which i run these commands don''t return any
prompt...what should i do?
Thanking in advance
-Piyush
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Message: 6
Date: Tue, 24 Jun 2008 16:51:59 +0800
From: "Kumar, Venkat" <Venkat.Kumar@lsi.com>
Subject: RE: [Xen-users] xm console does not return a console
To: piyush masrani <masrani.piyush@gmail.com>,
"xen-users@lists.xensource.com" <xen-users@lists.xensource.com>
Message-ID:
<532F993CC2E6654CADFE057ADC6C2FA31B7E651076@hkgmail01.lsi.com>
Content-Type: text/plain; charset="us-ascii"
First of all, Are you sure that your domain is created and booted properly.
If yes, is it a HVM or a PV guest?
Check in xm list whether your domain is created and running.
What does xm create -c show?
If xm list shows your domain and still you are not able to connect to the
console.
Use a vncviewer to attach to a console.
For example : vncviewer 12.0.0.1:5900
Use 5901 if 5900 is not working.
As you keep creating additional VM''s increment the screen number 590x.
I guess this helps.
Venkat
===============================Venkata Kumar Duvvuru,
LSI Engenio,
Adv. Development,
Bangalore.
Mob: +91-9880318542
Off : +91-80-41978700 ( Extn : 3544 )
===============================________________________________
From: xen-users-bounces@lists.xensource.com
[mailto:xen-users-bounces@lists.xensource.com] On Behalf Of piyush masrani
Sent: Tuesday, June 24, 2008 2:05 PM
To: xen-users@lists.xensource.com
Subject: [Xen-users] xm console does not return a console
Hi
I have installed xen 3.10 on ubuntu 7.10 (Gutsy Gibbon) through repositories...
I followed the following link:
http://www.howtoforge.com/ubuntu-7.10-server-install-xen-from-ubuntu-repositories
I am able to create Guest VMs on it by using xen-create-image and able to run
them by using xm create. But i am not getting the console of the created VMs( xm
console is not working. Not even by using the option -c in xm create)...The
shell in which i run these commands don''t return any prompt...what
should i do?
Thanking in advance
-Piyush
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