Xen does not work after changing scheduler's code

Xen does not work after changing scheduler's code

[tutu sky]

Hi all.
I've recently changed and added some line of code in some functions of credit scheduler, then issue:
make clean
make world
(fix compilation errors, if any)
make install
rm -f /boot/xen.gz
and update-grub
then reboot the system to change to dom0, but when grub is loaded and i choose "ubuntu with Xen hypervisor", some messages come and then grub selection menu appears again.
after that i deleted my changes in scheduler code and return it back to the default code, do as same as above steps and xen start working. so what does it mean?
Does it mean wrong rebuilding steps or wrong lines of code added?

Thanks and regards. 

_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel

Re: Xen does not work after changing scheduler's code

[Juergen Gross]

On 22/04/16 09:48, tutu sky wrote:
> Hi all.
> I've recently changed and added some line of code in some functions of credit scheduler, then issue:
> make clean
> make world
> (fix compilation errors, if any)
> make install
> rm -f /boot/xen.gz
> and update-grub
> then reboot the system to change to dom0, but when grub is loaded and i choose "ubuntu with Xen hypervisor", some messages come and then grub selection menu appears again.
> after that i deleted my changes in scheduler code and return it back to the default code, do as same as above steps and xen start working. so what does it mean?
> Does it mean wrong rebuilding steps or wrong lines of code added?

Without having more information this is impossible to tell.

You should try to be more specific about "some messages". Try to setup
a serial console as described in:

http://wiki.xenproject.org/wiki/XenSerialConsole

and capture the console messages. Post those and you might get better
answers. :-)


Juergen

_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel

Re: Xen does not work after changing scheduler's code

[tutu sky]

thanks Juergen,
i tried attaching serial console before in vmware (according http://wiki.xenproject.org/wiki/XenSerialConsole) but it was not successful, does your mentioned link need any command line options which must be added for it to work correctly? or any extra compile and configuration steps before installing xen?

Thanks and regards. 
________________________________________
From: Juergen Gross <jgross@suse.com>
Sent: Friday, April 22, 2016 8:03 AM
To: tutu sky; Xen-devel@lists.xen.org
Subject: Re: [Xen-devel] Xen does not work after changing scheduler's code

On 22/04/16 09:48, tutu sky wrote:
> Hi all.
> I've recently changed and added some line of code in some functions of credit scheduler, then issue:
> make clean
> make world
> (fix compilation errors, if any)
> make install
> rm -f /boot/xen.gz
> and update-grub
> then reboot the system to change to dom0, but when grub is loaded and i choose "ubuntu with Xen hypervisor", some messages come and then grub selection menu appears again.
> after that i deleted my changes in scheduler code and return it back to the default code, do as same as above steps and xen start working. so what does it mean?
> Does it mean wrong rebuilding steps or wrong lines of code added?

Without having more information this is impossible to tell.

You should try to be more specific about "some messages". Try to setup
a serial console as described in:

http://wiki.xenproject.org/wiki/XenSerialConsole

and capture the console messages. Post those and you might get better
answers. :-)


Juergen
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel

Re: Xen does not work after changing scheduler's code

[Juergen Gross]

On 22/04/16 10:18, tutu sky wrote:
> thanks Juergen,
> i tried attaching serial console before in vmware (according http://wiki.xenproject.org/wiki/XenSerialConsole) but it was not successful, does your mentioned link need any command line options which must be added for it to work correctly? or any extra compile and configuration steps before installing xen?

Huh, what?

Did you even try to understand the information in the mentioned wiki
article? This has nothing to do with vmware and all needed command
line options are discussed.

In case you don't have a second computer to hook up the serial line
you can add the "noreboot" option to the hypervisor command line. It
will avoid rebooting the computer in case of a hypervisor crash in case
the crash isn't happening before the boot options are being parsed.


Juergen

_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel

Re: Xen does not work after changing scheduler's code

[tutu sky]

yeah i tried, attaching a serial console was not possible for me, so i tried vmware and i tried match the information in link with some links on do the same using vmware. actually when using vmware for doing so, i changed: GRUB_CMDLINE_XEN line of grub to "loglvl=all guest_loglvl=all com1=115200,8n1,0x3e8,5 console=com1,vga"  as mentioned in that link and it caused a kernel panic (blinding num lock and scroll lock together).
if using two VM in vmware which one contains xen and other just does monitoring another, i think it must be possible to monitor xen.

by the way, thanks a lot. 

________________________________________
From: Juergen Gross <jgross@suse.com>
Sent: Friday, April 22, 2016 8:46 AM
To: tutu sky; Xen-devel@lists.xen.org
Subject: Re: [Xen-devel] Xen does not work after changing scheduler's code

On 22/04/16 10:18, tutu sky wrote:
> thanks Juergen,
> i tried attaching serial console before in vmware (according http://wiki.xenproject.org/wiki/XenSerialConsole) but it was not successful, does your mentioned link need any command line options which must be added for it to work correctly? or any extra compile and configuration steps before installing xen?

Huh, what?

Did you even try to understand the information in the mentioned wiki
article? This has nothing to do with vmware and all needed command
line options are discussed.

In case you don't have a second computer to hook up the serial line
you can add the "noreboot" option to the hypervisor command line. It
will avoid rebooting the computer in case of a hypervisor crash in case
the crash isn't happening before the boot options are being parsed.


Juergen
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel

Re: Xen does not work after changing scheduler's code

[Dario Faggioli]

[-- Attachment #1.1: Type: text/plain, Size: 1533 bytes --]

On Fri, 2016-04-22 at 08:59 +0000, tutu sky wrote:
> yeah i tried, attaching a serial console was not possible for me, so
> i tried vmware and i tried match the information in link with some
> links on do the same using vmware. actually when using vmware for
> doing so, i changed: GRUB_CMDLINE_XEN line of grub to "loglvl=all
> guest_loglvl=all com1=115200,8n1,0x3e8,5 console=com1,vga"  as
> mentioned in that link and it caused a kernel panic (blinding num
> lock and scroll lock together).
> if using two VM in vmware which one contains xen and other just does
> monitoring another, i think it must be possible to monitor xen.
> 
So you're basically using nested virtualization for
developping/debugging.

That's a valid use case, and there are people doing it a log, and you
don't even need VMWare to do that.

In any case, even if I've never used VMWare, I suspect there is a way
to redirect the serial console of a VM to a file or a terminal, and
hence be able to see it without many problems.

As per what is going wrong, that's impossible to say without seeing the
error messages and the code. However, if you say that the problem only
manifests with your modifications, I would bet the error is somewhere
in there.

Regards,
Dario
-- 
<<This happens because I choose it to happen!>> (Raistlin Majere)
-----------------------------------------------------------------
Dario Faggioli, Ph.D, http://about.me/dario.faggioli
Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)


[-- Attachment #1.2: This is a digitally signed message part --]
[-- Type: application/pgp-signature, Size: 181 bytes --]

[-- Attachment #2: Type: text/plain, Size: 126 bytes --]

_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel

Re: Xen does not work after changing scheduler's code

[tutu sky]

Thanks Dario,
 and then, i don't understand what is your meaning by:

"That's a valid use case, and there are people doing it a log, and you
don't even need VMWare to do that."

Do you mean that for developing/debugging three is no need for using vmware?

Thanks and regards.

________________________________________
From: Dario Faggioli <dario.faggioli@citrix.com>
Sent: Tuesday, April 26, 2016 1:10 PM
To: tutu sky
Cc: Juergen Gross; Xen-devel@lists.xen.org
Subject: Re: [Xen-devel] Xen does not work after changing scheduler's code

On Fri, 2016-04-22 at 08:59 +0000, tutu sky wrote:
> yeah i tried, attaching a serial console was not possible for me, so
> i tried vmware and i tried match the information in link with some
> links on do the same using vmware. actually when using vmware for
> doing so, i changed: GRUB_CMDLINE_XEN line of grub to "loglvl=all
> guest_loglvl=all com1=115200,8n1,0x3e8,5 console=com1,vga"  as
> mentioned in that link and it caused a kernel panic (blinding num
> lock and scroll lock together).
> if using two VM in vmware which one contains xen and other just does
> monitoring another, i think it must be possible to monitor xen.
>
So you're basically using nested virtualization for
developping/debugging.

That's a valid use case, and there are people doing it a log, and you
don't even need VMWare to do that.

In any case, even if I've never used VMWare, I suspect there is a way
to redirect the serial console of a VM to a file or a terminal, and
hence be able to see it without many problems.

As per what is going wrong, that's impossible to say without seeing the
error messages and the code. However, if you say that the problem only
manifests with your modifications, I would bet the error is somewhere
in there.

Regards,
Dario
--
<<This happens because I choose it to happen!>> (Raistlin Majere)
-----------------------------------------------------------------
Dario Faggioli, Ph.D, http://about.me/dario.faggioli
Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)


_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel

Re: Xen does not work after changing scheduler's code

[Dario Faggioli]

[-- Attachment #1.1: Type: text/plain, Size: 1325 bytes --]

On Wed, 2016-04-27 at 14:58 +0000, tutu sky wrote:
> Thanks Dario,
>  and then, i don't understand what is your meaning by:
> 
> "That's a valid use case, and there are people doing it a log, and
> you
> don't even need VMWare to do that."
> 
> Do you mean that for developing/debugging three is no need for using
> vmware?
> 
Exactly. Developing and debugging is a valid use case for nested
virtualization.

Nested virtualization means that you run an hypervisor (let's call it
level-1) as a guest of another (level-0) hypervisor.

What I think you are doing is using some version of vmware as level-0,
and then Xen as level-1.

And what I meant is that you can just use Xen at both levels.

Note that I don't know if it would be easier or harder, or in general
better or worse, to do so (as compared to what you are doing right
now). I only wanted to mention that it is possible.

This page may have more information (although, I'm not sure how updated
it is):
http://wiki.xenproject.org/wiki/Nested_Virtualization_in_Xen

Dario
-- 
<<This happens because I choose it to happen!>> (Raistlin Majere)
-----------------------------------------------------------------
Dario Faggioli, Ph.D, http://about.me/dario.faggioli
Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)


[-- Attachment #1.2: This is a digitally signed message part --]
[-- Type: application/pgp-signature, Size: 181 bytes --]

[-- Attachment #2: Type: text/plain, Size: 126 bytes --]

_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel

Re: Xen does not work after changing scheduler's code

[tutu sky]

yeah, I do familiar with nested virtualization. but using xen in xen has less performance vs using xen in vmware, so i decided using vmware.
but let me ask you, what do you do typically as a developer, in case of a development causes system failure or in my case kernel panic for example? DO you return to the last healthy system image of your setup (of course it wouldn't happen for you never, just asking for my inform)? 
Does developing these kind of mature system softwares, especially xen, has a especial tool?

Regards.
________________________________________
From: Dario Faggioli <dario.faggioli@citrix.com>
Sent: Wednesday, April 27, 2016 3:21 PM
To: tutu sky
Cc: Juergen Gross; Xen-devel@lists.xen.org
Subject: Re: [Xen-devel] Xen does not work after changing scheduler's code

On Wed, 2016-04-27 at 14:58 +0000, tutu sky wrote:
> Thanks Dario,
>  and then, i don't understand what is your meaning by:
>
> "That's a valid use case, and there are people doing it a log, and
> you
> don't even need VMWare to do that."
>
> Do you mean that for developing/debugging three is no need for using
> vmware?
>
Exactly. Developing and debugging is a valid use case for nested
virtualization.

Nested virtualization means that you run an hypervisor (let's call it
level-1) as a guest of another (level-0) hypervisor.

What I think you are doing is using some version of vmware as level-0,
and then Xen as level-1.

And what I meant is that you can just use Xen at both levels.

Note that I don't know if it would be easier or harder, or in general
better or worse, to do so (as compared to what you are doing right
now). I only wanted to mention that it is possible.

This page may have more information (although, I'm not sure how updated
it is):
http://wiki.xenproject.org/wiki/Nested_Virtualization_in_Xen

Dario
--
<<This happens because I choose it to happen!>> (Raistlin Majere)
-----------------------------------------------------------------
Dario Faggioli, Ph.D, http://about.me/dario.faggioli
Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)


_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel

Re: Xen does not work after changing scheduler's code

[George Dunlap]

On Wed, Apr 27, 2016 at 6:17 PM, tutu sky <ooohooo_u@hotmail.com> wrote:
>
> yeah, I do familiar with nested virtualization. but using xen in xen has less performance vs using xen in vmware, so i decided using vmware.

So you'd rather hard-crash your development box quickly than
successfully debug your guest OS a little less quickly?

 -George

_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel

Re: Xen does not work after changing scheduler's code

[tutu sky]

hi Geoge,
I don't get your meaning. would you please repeat your question for me in order to understand it?

Thanks and regards.
________________________________________
From: dunlapg@gmail.com <dunlapg@gmail.com> on behalf of George Dunlap <dunlapg@umich.edu>
Sent: Thursday, April 28, 2016 8:32 AM
To: tutu sky
Cc: Dario Faggioli; Juergen Gross; Xen-devel@lists.xen.org
Subject: Re: [Xen-devel] Xen does not work after changing scheduler's code

On Wed, Apr 27, 2016 at 6:17 PM, tutu sky <ooohooo_u@hotmail.com> wrote:
>
> yeah, I do familiar with nested virtualization. but using xen in xen has less performance vs using xen in vmware, so i decided using vmware.

So you'd rather hard-crash your development box quickly than
successfully debug your guest OS a little less quickly?

 -George

_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel

Re: Xen does not work after changing scheduler's code

[George Dunlap]

On Thu, Apr 28, 2016 at 11:46 AM, tutu sky <ooohooo_u@hotmail.com> wrote:
>
> hi Geoge,
> I don't get your meaning. would you please repeat your question for me in order to understand it?

First, please don't top-post.

My meaning was this: You said that running Xen inside of VMWare caused
your host to crash.  I said, none of us know much about VMware, and
suggested you try Xen inside of Xen.  You responded by saying that you
thought Xen inside of VMware would be faster.  But what good is it if
Xen in VMWare is "faster", if it doesn't even work?

 -George

_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel

Re: Xen does not work after changing scheduler's code

[tutu sky]

Thanks.
would you please tell me what do you mean by top-post?
No, A Xen running inside Vmware does not crash until i modified it. it is not because of vmware at all (it may be caused because of my wrong development). in fact when i can understand the performance difference Xen is working on vmware.
________________________________________
From: dunlapg@gmail.com <dunlapg@gmail.com> on behalf of George Dunlap <dunlapg@umich.edu>
Sent: Monday, May 9, 2016 2:56 PM
To: tutu sky
Cc: Dario Faggioli; Juergen Gross; Xen-devel@lists.xen.org
Subject: Re: [Xen-devel] Xen does not work after changing scheduler's code

On Thu, Apr 28, 2016 at 11:46 AM, tutu sky <ooohooo_u@hotmail.com> wrote:
>
> hi Geoge,
> I don't get your meaning. would you please repeat your question for me in order to understand it?

First, please don't top-post.

My meaning was this: You said that running Xen inside of VMWare caused
your host to crash.  I said, none of us know much about VMware, and
suggested you try Xen inside of Xen.  You responded by saying that you
thought Xen inside of VMware would be faster.  But what good is it if
Xen in VMWare is "faster", if it doesn't even work?

 -George

_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel

Re: Xen does not work after changing scheduler's code

[Paul Durrant]

> -----Original Message-----
> From: Xen-devel [mailto:xen-devel-bounces@lists.xen.org] On Behalf Of
> tutu sky
> Sent: 10 May 2016 07:44
> To: George Dunlap
> Cc: Juergen Gross; Dario Faggioli; Xen-devel@lists.xen.org
> Subject: Re: [Xen-devel] Xen does not work after changing scheduler's code
> 
> Thanks.
> would you please tell me what do you mean by top-post?

Top google hit for 'top post': https://en.wikipedia.org/wiki/Posting_style

> No, A Xen running inside Vmware does not crash until i modified it. it is not
> because of vmware at all (it may be caused because of my wrong
> development). in fact when i can understand the performance difference
> Xen is working on vmware.
> ________________________________________
> From: dunlapg@gmail.com <dunlapg@gmail.com> on behalf of George
> Dunlap <dunlapg@umich.edu>
> Sent: Monday, May 9, 2016 2:56 PM
> To: tutu sky
> Cc: Dario Faggioli; Juergen Gross; Xen-devel@lists.xen.org
> Subject: Re: [Xen-devel] Xen does not work after changing scheduler's code
> 
> On Thu, Apr 28, 2016 at 11:46 AM, tutu sky <ooohooo_u@hotmail.com>
> wrote:
> >
> > hi Geoge,
> > I don't get your meaning. would you please repeat your question for me in
> order to understand it?
> 
> First, please don't top-post.
> 
> My meaning was this: You said that running Xen inside of VMWare caused
> your host to crash.  I said, none of us know much about VMware, and
> suggested you try Xen inside of Xen.  You responded by saying that you
> thought Xen inside of VMware would be faster.  But what good is it if
> Xen in VMWare is "faster", if it doesn't even work?
> 
>  -George
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xen.org
> http://lists.xen.org/xen-devel
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel

Re: Xen does not work after changing scheduler's code

[tutu sky]

________________________________________
From: Paul Durrant <Paul.Durrant@citrix.com>
Sent: Tuesday, May 10, 2016 8:34 AM
To: tutu sky; George Dunlap
Cc: Juergen Gross; Dario Faggioli; Xen-devel@lists.xen.org
Subject: RE: [Xen-devel] Xen does not work after changing scheduler's code

> -----Original Message-----
> From: Xen-devel [mailto:xen-devel-bounces@lists.xen.org] On Behalf Of
> tutu sky
> Sent: 10 May 2016 07:44
> To: George Dunlap
> Cc: Juergen Gross; Dario Faggioli; Xen-devel@lists.xen.org
> Subject: Re: [Xen-devel] Xen does not work after changing scheduler's code
>
> Thanks.
> would you please tell me what do you mean by top-post?

Top google hit for 'top post': https://en.wikipedia.org/wiki/Posting_style

> No, A Xen running inside Vmware does not crash until i modified it. it is not
> because of vmware at all (it may be caused because of my wrong
> development). in fact when i can understand the performance difference
> Xen is working on vmware.
> ________________________________________
> From: dunlapg@gmail.com <dunlapg@gmail.com> on behalf of George
> Dunlap <dunlapg@umich.edu>
> Sent: Monday, May 9, 2016 2:56 PM
> To: tutu sky
> Cc: Dario Faggioli; Juergen Gross; Xen-devel@lists.xen.org
> Subject: Re: [Xen-devel] Xen does not work after changing scheduler's code
>
> On Thu, Apr 28, 2016 at 11:46 AM, tutu sky <ooohooo_u@hotmail.com>
> wrote:
> >
> > hi Geoge,
> > I don't get your meaning. would you please repeat your question for me in
> order to understand it?
>
> First, please don't top-post.
>
> My meaning was this: You said that running Xen inside of VMWare caused
> your host to crash.  I said, none of us know much about VMware, and
> suggested you try Xen inside of Xen.  You responded by saying that you
> thought Xen inside of VMware would be faster.  But what good is it if
> Xen in VMWare is "faster", if it doesn't even work?
>
>  -George
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xen.org
> http://lists.xen.org/xen-devel

thanks, it was not intentionally.  I hope this message be correct in bottom-post format.
please give me a feedback in order to learn.
Thank you in advance.
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel

Re: Xen does not work after changing scheduler's code

[Dario Faggioli]

[-- Attachment #1.1: Type: text/plain, Size: 1463 bytes --]

On Tue, 2016-05-10 at 08:47 +0000, tutu sky wrote:
> From: Paul Durrant <Paul.Durrant@citrix.com>
> > From: Xen-devel [mailto:xen-devel-bounces@lists.xen.org] On Behalf
> > Of
> > tutu sky
> >
> > Thanks.
> > would you please tell me what do you mean by top-post?
> Top google hit for 'top post': https://en.wikipedia.org/wiki/Posting_
> style
> 
> thanks, it was not intentionally.  I hope this message be correct in
> bottom-post format.
> please give me a feedback in order to learn.
>
It is better.

But you should also trim the quotes of the message you are replying to.
Basically, when you write something in your email that is "responding"
to something, things should look... well... like I am making them look
right here.

So, basically, your replies should go _below_ what you are replying to
(and this you've done correct), but you also should remove the parts
that are not necessary (and this, you didn't do at all).

Again, look at what I've done in this mail. Actually, check your
archive of this mailing list (or the web version of those), and you'll
find a lot of examples.

> Thank you in advance.
>
You're welcome. Hope it helps.

Regards,
Dario
-- 
<<This happens because I choose it to happen!>> (Raistlin Majere)
-----------------------------------------------------------------
Dario Faggioli, Ph.D, http://about.me/dario.faggioli
Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)


[-- Attachment #1.2: This is a digitally signed message part --]
[-- Type: application/pgp-signature, Size: 819 bytes --]

[-- Attachment #2: Type: text/plain, Size: 126 bytes --]

_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel

Re: Xen does not work after changing scheduler's code

[Dario Faggioli]

[-- Attachment #1.1: Type: text/plain, Size: 975 bytes --]

On Tue, 2016-05-10 at 06:44 +0000, tutu sky wrote:
> No, A Xen running inside Vmware does not crash until i modified it.
> it is not because of vmware at all (it may be caused because of my
> wrong development).
>
This is the second (and last) time I'm saying this:

if Xen works (either inside of VMware, or everywhere else) up until you
modify it, and then it stops working after you've modified it, there's
99.99% probability that it is your modifications that are wrong.

Of course, without knowing:
 - what exactly crash
 - how (we need to see the logs)
 - what was that you were trying to do
 - how you did that (we need to see the code)

There is nothing we can possibly do.

Dario
-- 
<<This happens because I choose it to happen!>> (Raistlin Majere)
-----------------------------------------------------------------
Dario Faggioli, Ph.D, http://about.me/dario.faggioli
Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)


[-- Attachment #1.2: This is a digitally signed message part --]
[-- Type: application/pgp-signature, Size: 819 bytes --]

[-- Attachment #2: Type: text/plain, Size: 126 bytes --]

_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel

Re: Xen does not work after changing scheduler's code

[tutu sky]

This is the second (and last) time I'm saying this:

if Xen works (either inside of VMware, or everywhere else) up until you
modify it, and then it stops working after you've modified it, there's
99.99% probability that it is your modifications that are wrong.

Yes, I know it and i mentioned it in previous replies. 


Of course, without knowing:
- what exactly crash
- how (we need to see the logs)
- what was that you were trying to do
- how you did that (we need to see the code)

There is nothing we can possibly do.

yeah, thanks a lot for advices. i try my best for being much clearer and elaborate more in my status reporting.


Dario
--
<<This happens because I choose it to happen!>> (Raistlin Majere)
-----------------------------------------------------------------
Dario Faggioli, Ph.D, http://about.me/dario.faggioli
Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)

   
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel