Xen users - Aug 2006 - xen dom0 crashes while copying a lot of files

xen 3.0.2 dom0 (kernel 2.6.16-xen) always crashes, or rather freezes, whenever I
copy more than 40GB of data.
 
i checked syslog and there is no indication at all why it crashes. this happens
whether the OS is FC5 or mandriva 2006, and is also independent of hardware,
although we have mostly
dell poweredge (1750, 2850, etc.)
 
i am wondering if there some workaround. thanks!
System Coordinator, Online Information System
Student Affairs, University of California, Office of the President

________________________________



_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users

Me too.
I have this problem and i do not know how to do.

Bruno

On Sun, 2006-08-20 at 06:04 -0700, John Shen wrote:
> xen 3.0.2 dom0 (kernel 2.6.16-xen) always crashes, or rather freezes,
whenever I copy more than 40GB of data.
>  
> i checked syslog and there is no indication at all why it crashes. this
happens whether the OS is FC5 or mandriva 2006, and is also independent of
hardware, although we have mostly
> dell poweredge (1750, 2850, etc.)
>  
> i am wondering if there some workaround. thanks!
> System Coordinator, Online Information System
> Student Affairs, University of California, Office of the President
> 
> ________________________________
> 
> SECURITY ALERT FROM THE LIP MAIL SANITIZER!
> 
> A pottentially dangerous attachments in MS TNEF format was stripped 
> from this Email message and DISCARDED.
> 
> The LIP mail server does not accept MS TNEF formatted Emails because:
> 1) MS TNEF format is a non standard attachment format from Microsoft and
>    therefore can not be verified for Virus and Trojan horses.
> 2) MS TNEF format can only be read by some MS mail agents.
> 3) Microsoft recognizes and recommends that MS TNEF should only be used 
>    in Intranets and never in the Internet at large.
> 
> The sender should disable sending RTF in Outlook and disable sending
> TNEF to the Internet from their MS Exchange gateway.
> 
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users

_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users

for this , I suggest u to install the bianary version of xen ,
not to compile and install  by yourselfit.That would be more stable.

On 8/21/06, Bruno Rodrigues Silva <brunors@lip.pt>
wrote:
> Me too.
> I have this problem and i do not know how to do.
>
> Bruno
>
> On Sun, 2006-08-20 at 06:04 -0700, John Shen wrote:
> > xen 3.0.2 dom0 (kernel 2.6.16-xen) always crashes, or rather freezes,
> whenever I copy more than 40GB of data.
> >
> > i checked syslog and there is no indication at all why it crashes.
this
> happens whether the OS is FC5 or mandriva 2006, and is also independent of
> hardware, although we have mostly
> > dell poweredge (1750, 2850, etc.)
> >
> > i am wondering if there some workaround. thanks!
> > System Coordinator, Online Information System
> > Student Affairs, University of California, Office of the President
> >
> > ________________________________
> >
> > SECURITY ALERT FROM THE LIP MAIL SANITIZER!
> >
> > A pottentially dangerous attachments in MS TNEF format was stripped
> > from this Email message and DISCARDED.
> >
> > The LIP mail server does not accept MS TNEF formatted Emails because:
> > 1) MS TNEF format is a non standard attachment format from Microsoft
and
> >    therefore can not be verified for Virus and Trojan horses.
> > 2) MS TNEF format can only be read by some MS mail agents.
> > 3) Microsoft recognizes and recommends that MS TNEF should only be
used
> >    in Intranets and never in the Internet at large.
> >
> > The sender should disable sending RTF in Outlook and disable sending
> > TNEF to the Internet from their MS Exchange gateway.
> >
> > _______________________________________________
> > Xen-users mailing list
> > Xen-users@lists.xensource.com
> > http://lists.xensource.com/xen-users
>
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
>
_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users

i have been using the binary installation from xen source (3.0.2). although i
did not do a thorough testing, if i shut down xend and xendomains services, and
then does the copy, the kernel itself did not crash. then i can turn on these
services again. probably this could be a workaround but i am not sure.
 
John Shen 510-326-8473 Fax: 510-987-9612
System Coordinator, Online Information System
Student Affairs, University of California, Office of the President

________________________________

From: rickey berkeley [mailto:rickey.berkeley@gmail.com]
Sent: Tue 8/22/2006 2:31 AM
To: Bruno Rodrigues Silva
Cc: John Shen; xen-users@lists.xensource.com
Subject: Re: xen dom0 crashes while copying a lot of files



for this , I suggest u to install the bianary version of xen ,
not to compile and install  by yourselfit.That would be more stable.

On 8/21/06, Bruno Rodrigues Silva <brunors@lip.pt>
wrote:
> Me too.
> I have this problem and i do not know how to do.
>
> Bruno
>
> On Sun, 2006-08-20 at 06:04 -0700, John Shen wrote:
> > xen 3.0.2 dom0 (kernel 2.6.16-xen) always crashes, or rather freezes,
> whenever I copy more than 40GB of data.
> >
> > i checked syslog and there is no indication at all why it crashes.
this
> happens whether the OS is FC5 or mandriva 2006, and is also independent of
> hardware, although we have mostly
> > dell poweredge (1750, 2850, etc.)
> >
> > i am wondering if there some workaround. thanks!
> > System Coordinator, Online Information System
> > Student Affairs, University of California, Office of the President
> >
> > ________________________________
> >
> > SECURITY ALERT FROM THE LIP MAIL SANITIZER!
> >
> > A pottentially dangerous attachments in MS TNEF format was stripped
> > from this Email message and DISCARDED.
> >
> > The LIP mail server does not accept MS TNEF formatted Emails because:
> > 1) MS TNEF format is a non standard attachment format from Microsoft
and
> >    therefore can not be verified for Virus and Trojan horses.
> > 2) MS TNEF format can only be read by some MS mail agents.
> > 3) Microsoft recognizes and recommends that MS TNEF should only be
used
> >    in Intranets and never in the Internet at large.
> >
> > The sender should disable sending RTF in Outlook and disable sending
> > TNEF to the Internet from their MS Exchange gateway.
> >
> > _______________________________________________
> > Xen-users mailing list
> > Xen-users@lists.xensource.com
> > http://lists.xensource.com/xen-users
>
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
>


_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users

To answer my own question, I finally figured it out that the usb was the
culprit. Passing nousb to the domU kernel solves the problem beautifully. I
accidentally bumped into the solution when I installed Fedora Core as a VMWare
guest, and xenified the FC guest without usb. The xen guest vms within the FC
vmware vm does not crash with heavy I/O.
 
I confirmed that usb was the problem by finding this document by dell engineers.
Had I found it earlier, I would not have wasted so much time on this and other
things that dell engineers already figured out. Oh, well, this sort of things
happens.
 
http://www.dell.com/downloads/global/power/ps2q06-20050322-Schmidt-OE.pdf#search=%22xen%20dell%20poweredge%202850%22
 
It works for me and hope it will also work for you. It might be useful for
others as well so I am copying the mailing list as well.
 
 
System Coordinator, Online Information System
Student Affairs, University of California, Office of the President

________________________________

From: John Shen
Sent: Wed 8/23/2006 4:44 AM
To: rickey berkeley; Bruno Rodrigues Silva
Cc: xen-users@lists.xensource.com
Subject: RE: xen dom0 crashes while copying a lot of files


i have been using the binary installation from xen source (3.0.2). although i
did not do a thorough testing, if i shut down xend and xendomains services, and
then does the copy, the kernel itself did not crash. then i can turn on these
services again. probably this could be a workaround but i am not sure.
 
John Shen 510-326-8473 Fax: 510-987-9612
System Coordinator, Online Information System
Student Affairs, University of California, Office of the President

________________________________

From: rickey berkeley [mailto:rickey.berkeley@gmail.com]
Sent: Tue 8/22/2006 2:31 AM
To: Bruno Rodrigues Silva
Cc: John Shen; xen-users@lists.xensource.com
Subject: Re: xen dom0 crashes while copying a lot of files



for this , I suggest u to install the bianary version of xen ,
not to compile and install  by yourselfit.That would be more stable.

On 8/21/06, Bruno Rodrigues Silva <brunors@lip.pt>
wrote:
> Me too.
> I have this problem and i do not know how to do.
>
> Bruno
>
> On Sun, 2006-08-20 at 06:04 -0700, John Shen wrote:
> > xen 3.0.2 dom0 (kernel 2.6.16-xen) always crashes, or rather freezes,
> whenever I copy more than 40GB of data.
> >
> > i checked syslog and there is no indication at all why it crashes.
this
> happens whether the OS is FC5 or mandriva 2006, and is also independent of
> hardware, although we have mostly
> > dell poweredge (1750, 2850, etc.)
> >
> > i am wondering if there some workaround. thanks!
> > System Coordinator, Online Information System
> > Student Affairs, University of California, Office of the President
> >
> > ________________________________
> >
> > SECURITY ALERT FROM THE LIP MAIL SANITIZER!
> >
> > A pottentially dangerous attachments in MS TNEF format was stripped
> > from this Email message and DISCARDED.
> >
> > The LIP mail server does not accept MS TNEF formatted Emails because:
> > 1) MS TNEF format is a non standard attachment format from Microsoft
and
> >    therefore can not be verified for Virus and Trojan horses.
> > 2) MS TNEF format can only be read by some MS mail agents.
> > 3) Microsoft recognizes and recommends that MS TNEF should only be
used
> >    in Intranets and never in the Internet at large.
> >
> > The sender should disable sending RTF in Outlook and disable sending
> > TNEF to the Internet from their MS Exchange gateway.
> >
> > _______________________________________________
> > Xen-users mailing list
> > Xen-users@lists.xensource.com
> > http://lists.xensource.com/xen-users
>
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
>


_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users