[Xen-users] Re: Xen-users Digest, Vol 4, Issue 67

["Ramarathnam Sriram" <sramara@xxxxxxxxxxxxxx>]

Hi,
  I am using Twisted-2.0.1 and ZopeInterface-3.0.1

Now when i do xend start after booting into my Xen-linux kernel, i get 
the follwing error.
Traceback (most recent call last):
File "/usr/sbin/xend", line 27, in ?
from xen.xend.server import SrvDaemon
 File 
 "/auto/groups/xeno-xenod/users/xenod/cron-build/R24768.dir/xen-
2.0.bk/dist/install/usr/lib/python/xen/xend/server/SrvDaemon.py", 
 line 35, in ?
  File 
 "/auto/groups/xeno-xenod/users/xenod/cron-build/R24768.dir/xen-
2.0.bk/dist/install/usr/lib/python/xen/xend/server/SrvServer.py", 
  line 28, in ?
 ImportError: No module named web

Please suggest what to do.

Thanks
Sriram


On Wed, 22 Jun 2005 06:51:20 -0400 (EDT), xen-users-request wrote
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> Today's Topics:
> 
>    1. XEN installation error messages seem ambiguous (Cuong Le)
>    2. RE: exit xm console (JHJE (Jan Holst Jensen))
>    3. Re: XEN installation error messages seem ambiguous (aq)
>    4. Re: Could not get the network to run (Friedmund Lassmann)
>    5. Error creating domain: (12, 'Cannot allocate memory') (Wyatt)
>    6. xend start gives an error (Asaf Maruf Ali)
>    7. Re:Error creating domain: (12, 'Cannot allocate memory')
>       (Jean-Michel Caricand)
>    8. Xen asymmetric bandwidth (Ralf L?bben)
>    9. Re: Xen install (James Bulpin)
> 
> ----------------------------------------------------------------------
> 
> Message: 1
> Date: Tue, 21 Jun 2005 22:44:13 -0400
> From: Cuong Le <lecuong@xxxxxxxxx>
> Subject: [Xen-users] XEN installation error messages seem ambiguous
> To: xen-users@xxxxxxxxxxxxxxxxxxx
> Message-ID: <42B8D07D.8050805@xxxxxxxxx>
> Content-Type: text/plain; charset=us-ascii; format=flowed
> 
> Hi, I installed XEN on RedHat 9 and experienced the following 
> problem when running "xend". I tried to reinstall twisted, python,
> ...everything seem just fine, but could not understand why these 
> errors occured:
> 
> /********************************************************************
> ERROR: Could not obtain handle on privileged command interface (2 = 
> No such file or directory) Traceback (most recent call last):   File 
> "/usr/sbin/xend", line 27, in ?     from xen.xend.server import SrvDaemon
>    File "/usr/lib/python/xen/xend/server/SrvDaemon.py", line 41, in ?
>      import channel
>    File "/usr/lib/python/xen/xend/server/channel.py", line 3, in ?
>      import xen.lowlevel.xc; xc = xen.lowlevel.xc.new()
> xen.lowlevel.xc.error: (2, 'No such file or directory')
> **********************************************************************/
> 
> The error message "ERROR: Could not obtain handle on privileged 
> command interface (2 = No such file or directory)" appears to be 
> very ambiguous to me.
> 
> Would very much appreciate your help.
> Lee
> 
> ------------------------------
> 
> Message: 2
> Date: Wed, 22 Jun 2005 09:29:10 +0200
> From: "JHJE (Jan Holst Jensen)" <jhje@xxxxxxxxxxxxxxx>
> Subject: RE: [Xen-users] exit xm console
> To: "JHJE (Jan Holst Jensen)" <jhje@xxxxxxxxxxxxxxx>, "gerardi"
>       <gerardi@xxxxxxxxxx>, <xen-users@xxxxxxxxxxxxxxxxxxx>
> Message-ID:
>       <40726A9415C7FA4E985717142CA980644A3980@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
> Content-Type: text/plain;     charset="us-ascii"
> 
> > > Thank you for your information, but the problem is the CRTL 
> > > key. I kann 
> > > exit a console wenn I am doing it local it works,
> > > but remote I cann not send the CRTL key.
> > 
> > Ooops. Does the CTRL key work when you are doing normal stuff 
> > on the Xen
> > host ? That is: logged into dom0 through putty ?
> > 
> > I recall having trouble sending e.g. Ctrl-C when I was in a 
> > Xen console.
> > Don't know if that still applies to my setup. Will check tomorrow.
> 
> Hmmm... works fine for me now, running Xen 2.0.6. I had trouble using
> Ctrl-C in Xen consoles 2.0.5, but that seems to be gone now.
> 
> -- Jan
> 
> ------------------------------
> 
> Message: 3
> Date: Wed, 22 Jun 2005 17:34:45 +0900
> From: aq <aquynh@xxxxxxxxx>
> Subject: Re: [Xen-users] XEN installation error messages seem
>       ambiguous
> To: Cuong Le <lecuong@xxxxxxxxx>
> Cc: xen-users@xxxxxxxxxxxxxxxxxxx
> Message-ID: <9cde8bff05062201342b1102c9@xxxxxxxxxxxxxx>
> Content-Type: text/plain; charset=ISO-8859-1
> 
> On 6/22/05, Cuong Le <lecuong@xxxxxxxxx> wrote:
> > Hi, I installed XEN on RedHat 9 and experienced the following problem
> > when running "xend". I tried to reinstall twisted, python,...everything
> > seem just fine, but could not understand why these errors occured:
> > 
> > /********************************************************************
> > ERROR: Could not obtain handle on privileged command interface (2 = No
> > such file or directory)
> > Traceback (most recent call last):
> >    File "/usr/sbin/xend", line 27, in ?
> >      from xen.xend.server import SrvDaemon
> >    File "/usr/lib/python/xen/xend/server/SrvDaemon.py", line 41, in ?
> >      import channel
> >    File "/usr/lib/python/xen/xend/server/channel.py", line 3, in ?
> >      import xen.lowlevel.xc; xc = xen.lowlevel.xc.new()
> > xen.lowlevel.xc.error: (2, 'No such file or directory')
> > **********************************************************************/
> > 
> > The error message "ERROR: Could not obtain handle on privileged command
> > interface (2 = No such file or directory)" appears to be very ambiguous
> > to me.
> 
> looks like you are not booting in xen? xend would refuse to run under
> non-xen kernel.
> 
> what is the result of "uname -a" ?
> 
> regards,
> aq
> 
> ------------------------------
> 
> Message: 4
> Date: Wed, 22 Jun 2005 08:43:50 +0000 (UTC)
> From: Friedmund Lassmann <lassmann@xxxxxxxxxx>
> Subject: [Xen-users] Re: Could not get the network to run
> To: xen-users@xxxxxxxxxxxxxxxxxxx
> Message-ID: <loom.20050622T103157-234@xxxxxxxxxxxxxx>
> Content-Type: text/plain; charset=us-ascii
> 
> Hi Nils,
> 
> Thanks for your help. 
> Still it did not work with xen-unstable-src.tgz but I'm fine
> with it since I've now got it running with xen-2.0-testing-src.tgz
> 
> Yes I've compiled my tg3 network module otherwise I would not even
> be able to ping my own IP.
> 
> Configuring xen-br0 did not help anything. Actually the problem was
> already before I started xend so even without the bridging stuff.
> With my plain eth0 and lo in the ifconfig output I already miss the 
> 'RUNNING' flag for eth0.
> 
> I've tried to add my gateways MAC into /etc/ethers then a ping on it
> looked like this:
> 
> # ping 15.136.127.254
> PING 15.136.127.254 (15.136.127.254) 56(84) bytes of data.
> ping: sendmsg: No buffer space available
> ping: sendmsg: No buffer space available
> 
> Don't know what is wrong with my network, but I can live with 
> it as long as xen-2.0 works now. I'll try xen-unstable again
> some day in future..
> 
> Regards,
> Friedl
> 
> ------------------------------
> 
> Message: 5
> Date: Tue, 21 Jun 2005 15:55:44 -0600
> From: Wyatt <wyatt@xxxxxxxxxxx>
> Subject: [Xen-users] Error creating domain: (12, 'Cannot allocate
>       memory')
> To: xen-users@xxxxxxxxxxxxxxxxxxx
> Message-ID: <c2a4c1d5199646cfd92569916d5c1fdc@xxxxxxxxxxx>
> Content-Type: text/plain; charset="us-ascii"
> 
> I have Centos 4.1 running on Xen (Dom0), and it works fine.  However,
>  when I try to start a new domain via xm create, I get the following 
> error:
> 
> Error: Error creating domain: (12, 'Cannot allocate memory')
> 
> I have 512 MB on the machine.
> 
> Here are some copies of output:
> 
> [root@persephone rc3.d]# xm list
> Name              Id  Mem(MB)  CPU  State  Time(s)  Console
> Domain-0           0       57    0  r----     88.2
> 
> [root@persephone rc3.d]# xm info
> system                 : Linux
> host                   : persephone
> release                : 2.6.11.10-xen0
> version                : #1 Sun May 22 11:38:50 BST 2005
> machine                : i686
> cores                  : 1
> hyperthreads_per_core  : 1
> cpu_mhz                : 400
> memory                 : 511
> free_memory            : 435
> 
> [root@persephone rc3.d]# cat /etc/xen/xen.conf
> kernel = "/boot/vmlinuz-2.6-xenU"
> memory = 128
> name = "Test"
> disk = ['phy:hda5,hda5,w']
> root = "/dev/hda5 ro"
> 
> After running the command, I have some seemingly zombie domains:
> 
> [root@persephone rc3.d]# xm create /etc/xen/xen.conf -c
> Using config file "/etc/xen/xen.conf".
> Error: Error creating domain: (12, 'Cannot allocate memory')
> 
> [root@persephone rc3.d]# xm list
> Name              Id  Mem(MB)  CPU  State  Time(s)  Console
> Domain-0           0       57    0  r----     90.4
> Domain-6           6      128    0  --p--      0.0
> 
> I have to kill them using xm destroy Domain-X.  Note that I do not 
> specify the name of Domain-X; instead, it is supposed to be called 
> Test.
> 
> I have tried using balloon to adjust memory on Dom-0, and while that 
> works (xm list shows the new amount being used), it does not allow 
> me to create any new domains.
> 
> Thanks in advance for the help!
> --
> Wyatt
> 
> Accident, n.:
>       A condition in which presence of mind is good, but absence of
>       body is better.
>               -- Foolish Dictionary
> 
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> ------------------------------
> 
> Message: 6
> Date: Wed, 22 Jun 2005 12:25:37 +0600
> From: Asaf Maruf Ali <asaf@xxxxxxxxxxx>
> Subject: [Xen-users] xend start gives an error
> To: xen-users@xxxxxxxxxxxxxxxxxxx
> Message-ID: <200506221225.37661.asaf@xxxxxxxxxxx>
> Content-Type: text/plain;  charset="us-ascii"
> 
> Hello
> 
> I am able to boot up with the xen kernel 2.0.6. I have satisfied all 
> the requirements like brctl, iproute2, twisted etc prior to 
> installing. However, when i run xend start from a terminal, it gives 
> an error like the following:
> 
> SrvDaemon.py version mismatch for module xen.lowlevel.xu
> 
> and ends with Import:Error No module named web
> 
> this is not the complete error output.
> 
> During bootup it gives me an error regarding QM_MODULES not found 
> and an error about modules.dep file not found. The result is that 
> the ethernet interface is not activated as well.
> 
> Help appreciated?
> -- 
> Asaf Maruf Ali
> PING Systems
> Network Security-Linux-Consulting
> 605, 6th Floor,
> Clifton Centre, Block 5,
> Clifton, Karachi-75600
> Pakistan
> Tel # 5872438, 5868275
> Fax # 5868927
> http://www.ping.com.pk
> "PING is a Micro$oft free environment"
> 
> ------------------------------
> 
> Message: 7
> Date: Wed, 22 Jun 2005 11:38:21 +0200
> From: "Jean-Michel Caricand" <jean-michel.caricand@xxxxxxxxxxx>
> Subject: Re:[Xen-users] Error creating domain: (12, 'Cannot allocate
>       memory')
> To: "wyatt" <wyatt@xxxxxxxxxxx>
> Cc: xen-users <xen-users@xxxxxxxxxxxxxxxxxxx>
> Message-ID: <IIHC3X$9B9AC82CDB0F9B2619E2AB21BFE2AEB9@xxxxxxxxxxx>
> Content-Type: text/plain; charset=iso-8859-1
> 
> Try with
> 
> system : Linux
> host : persephone
> release : 2.6.11.10-xen0
> version : #1 Sun May 22 11:38:50 BST 2005
> machine : i686
> cores : 1
> hyperthreads_per_core : 1
> cpu_mhz : 400
> memory : 256
> free_memory : 435
> 
> for your host. 128Mo + 256Mo is < 512
> 
> > I have Centos 4.1 running on Xen (Dom0), and it works fine.
>  However, 
> > when I try to start a new domain via xm create, I get the
> following 
> > error:
> > 
> > Error: Error creating domain: (12, 'Cannot allocate memory')
> > 
> > I have 512 MB on the machine.
> > 
> > Here are some copies of output:
> > 
> > [root@persephone rc3.d]# xm list
> > Name              Id  Mem(MB)  CPU  State  Time(s)  Console
> > Domain-0           0       57    0  r----     88.2
> > 
> > [root@persephone rc3.d]# xm info
> > system                 : Linux
> > host                   : persephone
> > release                : 2.6.11.10-xen0
> > version                : #1 Sun May 22 11:38:50 BST 2005
> > machine                : i686
> > cores                  : 1
> > hyperthreads_per_core  : 1
> > cpu_mhz                : 400
> > memory                 : 511
> > free_memory            : 435
> > 
> > [root@persephone rc3.d]# cat /etc/xen/xen.conf
> > kernel = "/boot/vmlinuz-2.6-xenU"
> > memory = 128
> > name = "Test"
> > disk = ['phy:hda5,hda5,w']
> > root = "/dev/hda5 ro"
> > 
> > After running the command, I have some seemingly zombie domains:
> > 
> > [root@persephone rc3.d]# xm create /etc/xen/xen.conf -c
> > Using config file "/etc/xen/xen.conf".
> > Error: Error creating domain: (12, 'Cannot allocate memory')
> > 
> > [root@persephone rc3.d]# xm list
> > Name              Id  Mem(MB)  CPU  State  Time(s)  Console
> > Domain-0           0       57    0  r----     90.4
> > Domain-6           6      128    0  --p--      0.0
> > 
> > I have to kill them using xm destroy Domain-X.  Note that I
> do not 
> > specify the name of Domain-X; instead, it is supposed to be
> called 
> > Test.
> > 
> > I have tried using balloon to adjust memory on Dom-0, and
> while that 
> > works (xm list shows the new amount being used), it does not
> allow me 
> > to create any new domains.
> > 
> > Thanks in advance for the help!
> > --
> > Wyatt
> > 
> > Accident, n.:
> >     A condition in which presence of mind is good, but absence of
> >     body is better.
> >             -- Foolish Dictionary
> > 
> >
> 
> Jean-Michel Caricand
> 
> Adresse professionnelle 
> GRETA de Besançon 
> 35 avenue de Montrapon 
> 25000  BESANCON 
> jean-michel.caricand@xxxxxxxxxxxxxxxxxx 
> http://www.greta-besancon.com
> 
> Accédez au courrier électronique de La Poste : www.laposte.net ; 
> 3615 LAPOSTENET (0,34?/mn) ; tél : 08 92 68 13 50 (0,34?/mn)
> 
> ------------------------------
> 
> Message: 8
> Date: Wed, 22 Jun 2005 11:47:38 +0200
> From: Ralf L?bben <ralfluebben@xxxxxx>
> Subject: [Xen-users] Xen asymmetric bandwidth
> To: xen-users@xxxxxxxxxxxxxxxxxxx
> Message-ID: <d9bbua$c04$1@xxxxxxxxxxxxx>
> Content-Type: text/plain; charset=utf-8
> 
> Hello,
> 
> I did some network benchmarking on Xen.
> The setup were two pentium 4 2.66 machines with xen kernel 2.6.10 and
> gigabit ethernet cards.
> I did the benchmark with iperf.
> 
> On a normal system I get a maximum bandwidth of 620MBit/s and with 
> Xen about 500MBit/s. With Iperf you have the possibility to send and 
> receive simultaneous. On the normal system distribution is 
> symmetric. Pro channel about 310MBit/s so the sum is 620MBit/s 
> again. On Xen the distribution is asymmetric. The domain can receive 
> about 320MBit/s but it can only send 180MBit/s. The sum is also 500MBit/s.
> 
> Has anybody an idea why the distribution is asymmetric?
> 
> Thanks.
> 
> Greetings 
> Ralf Lübben
> 
> ------------------------------
> 
> Message: 9
> Date: Wed, 22 Jun 2005 11:50:41 +0100
> From: James Bulpin <james@xxxxxxxxxxxxx>
> Subject: Re: [Xen-users] Xen install
> To: Xen User List <xen-users@xxxxxxxxxxxxxxxxxxx>
> Message-ID: <42B94281.5050607@xxxxxxxxxxxxx>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
> 
> It looks like the new version 2.x of Twisted has separated the 
> twisted.web part of the library out into a separate package "Twisted 
> Web". Which version of Twisted are you using? I'd suggest sticking 
> with 
> 1.3 for now.
> 
> Has anyone tried using Twisted 2.x + Twisted Web with xend?
> 
> James
> 
> Ramarathnam Sriram wrote:
> > *Hi,*
> > 
> > *Now when i do xend start after booting into my Xen-linux kernel, i get 
> > the follwing error.*
> > 
> > *Traceback (most recent call last):
> >   File "/usr/sbin/xend", line 27, in ?
> >     from xen.xend.server import SrvDaemon
> >   File 
> > "/auto/groups/xeno-xenod/users/xenod/cron-build/R24768.dir/xen-
2.0.bk/dist/install/usr/lib/python/xen/xend/server/SrvDaemon.py", 
> > line 35, in ?
> >   File 
> > "/auto/groups/xeno-xenod/users/xenod/cron-build/R24768.dir/xen-
2.0.bk/dist/install/usr/lib/python/xen/xend/server/SrvServer.py", 
> > line 28, in ?
> > ImportError: No module named web
> > [root@tfrc1 ~]#
> > *
> > 
> > *please suggest what to do.*
> > 
> > *Thanks*
> > 
> > *Sriram*
> > 
> > **
> > 
> > *On Tue, 21 Jun 2005 11:06:44 -0400 (EDT), Daniel Paquet wrote*
> >  > You need the python module twisted, to install it you can get the Xen 
> > sources uncompress them and type make install-twisted.
> >  >
> >  > > Hi,
> >  > > When i boot into my xen-linux2.6.11.10 kernel and give the command
> >  > > xend start i get the following message
> >  > >>
> >  > >> [root@tfrc1 ~]# xend start
> >  > >> Traceback (most recent call last):
> >  > >> File "/usr/sbin/xend", line 27, in ?
> >  > >> from xen.xend.server import SrvDaemon
> >  > >> File "/auto/groups/xeno-xenod/users/xenod/cron-build/R24768.dir/xen-
> >  > >> 2.0.bk/dist/install/usr/lib/python/xen/xend/server/SrvDaemon.py", 
> > line
> >  > >> 20,
> >  > >> in ?
> >  > >> ImportError: No module named twisted.internet
> >  > >> [root@tfrc1 ~]#
> >  > >>
> >  > >> Please suggest what to do.
> >  > >>
> >  > >> Thanks
> >  > >> Sriram
> 
> ------------------------------
> 
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users
> 
> End of Xen-users Digest, Vol 4, Issue 67
> ****************************************


Sriram Ramarathnam,
Graduate Student,Computer Science
Clemson University


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