Mailing List Archive

Re: Xen-users Digest, Vol 4, Issue 67
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@cs.ubc.ca>
> Subject: [Xen-users] XEN installation error messages seem ambiguous
> To: xen-users@lists.xensource.com
> Message-ID: <42B8D07D.8050805@cs.ubc.ca>
> 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@novonordisk.com>
> Subject: RE: [Xen-users] exit xm console
> To: "JHJE (Jan Holst Jensen)" <jhje@novonordisk.com>, "gerardi"
> <gerardi@spirito.de>, <xen-users@lists.xensource.com>
> Message-ID:
> <40726A9415C7FA4E985717142CA980644A3980@EXDKBA022.corp.novocorp.net>
> 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@gmail.com>
> Subject: Re: [Xen-users] XEN installation error messages seem
> ambiguous
> To: Cuong Le <lecuong@cs.ubc.ca>
> Cc: xen-users@lists.xensource.com
> Message-ID: <9cde8bff05062201342b1102c9@mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
>
> On 6/22/05, Cuong Le <lecuong@cs.ubc.ca> 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@freenet.de>
> Subject: [Xen-users] Re: Could not get the network to run
> To: xen-users@lists.xensource.com
> Message-ID: <loom.20050622T103157-234@post.gmane.org>
> 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@amenaza.com>
> Subject: [Xen-users] Error creating domain: (12, 'Cannot allocate
> memory')
> To: xen-users@lists.xensource.com
> Message-ID: <c2a4c1d5199646cfd92569916d5c1fdc@amenaza.com>
> 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@ping.com.pk>
> Subject: [Xen-users] xend start gives an error
> To: xen-users@lists.xensource.com
> Message-ID: <200506221225.37661.asaf@ping.com.pk>
> 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@laposte.net>
> Subject: Re:[Xen-users] Error creating domain: (12, 'Cannot allocate
> memory')
> To: "wyatt" <wyatt@amenaza.com>
> Cc: xen-users <xen-users@lists.xensource.com>
> Message-ID: <IIHC3X$9B9AC82CDB0F9B2619E2AB21BFE2AEB9@laposte.net>
> 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@greta-besancon.com
> 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@gmx.de>
> Subject: [Xen-users] Xen asymmetric bandwidth
> To: xen-users@lists.xensource.com
> Message-ID: <d9bbua$c04$1@sea.gmane.org>
> 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@xensource.com>
> Subject: Re: [Xen-users] Xen install
> To: Xen User List <xen-users@lists.xensource.com>
> Message-ID: <42B94281.5050607@xensource.com>
> 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@lists.xensource.com
> 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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Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users
Re: Re: Xen-users Digest, Vol 4, Issue 67 [ In reply to ]
Ramarathnam Sriram wrote:
> 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.

As previously suggested, use Twisted 1.3.

Alternatively keep Twisted 2.0 and install Twisted Web.

James

_______________________________________________
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Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users
Re: Re: Xen-users Digest, Vol 4, Issue 67 [ In reply to ]
Hi,
I installed install Twisted Web now and it gives the folowing error when i
type xend start

[root@tfrc1 ~]# xend start
/usr/lib/python/xen/xend/server/SrvDir.py:3: DeprecationWarning:
twisted.protoco ls.http has moved to twisted.web.http. See
http://twistedmatrix.com/projects/web .
from twisted.protocols import http

Please suggest what to do.

Thanks
Sriram


On Sun, 26 Jun 2005 13:33:12 +0100, James Bulpin wrote
> Ramarathnam Sriram wrote:
> > 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.
>
> As previously suggested, use Twisted 1.3.
>
> Alternatively keep Twisted 2.0 and install Twisted Web.
>
> James


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Re: Re: Xen-users Digest, Vol 4, Issue 67 [ In reply to ]
OK - back to option 1, install Twisted 1.3.

Thanks for the info, will add to FAQ.

James

Ramarathnam Sriram wrote:
> Hi,
> I installed install Twisted Web now and it gives the folowing error when i
> type xend start
>
> [root@tfrc1 ~]# xend start
> /usr/lib/python/xen/xend/server/SrvDir.py:3: DeprecationWarning:
> twisted.protoco ls.http has moved to twisted.web.http. See
> http://twistedmatrix.com/projects/web .
> from twisted.protocols import http
>
> Please suggest what to do.
>
> Thanks
> Sriram
>
>
> On Sun, 26 Jun 2005 13:33:12 +0100, James Bulpin wrote
>
>>Ramarathnam Sriram wrote:
>>
>>>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.
>>
>>As previously suggested, use Twisted 1.3.
>>
>>Alternatively keep Twisted 2.0 and install Twisted Web.
>>
>>James
>
>

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