[XenPPC] Re: shutdown/destroy domU problem

[Doron Shiloach <doron@xxxxxxxxxx>]

Hi Jimi,

>> Please try executing "/sbin/poweroff"
manually on the DomU and see if that works.

(none):/ # /sbin/poweroff
WARNING: could not determine runlevel - doing soft
poweroff
  (it's better to use shutdown instead of poweroff
from the command line)
shutdown: /dev/initctl: No such file or directory
init: /dev/initctl: No such file or directory 

I am using a custom init script with
this domU, which from what you wrote previously, seems to not be creating
a "real" init process, preventing the xm shutdown from working.
What do you mean by a "real"
init process?  Is it possible for me to define init and still be able
to use the shutdown command?  

As for the xm destroy, I mean that I
can use the command once (usually) , and it works, removing that domU.
However, when I try to use it on a second
domU, the machine freezes.  From what I understand, it is preferable
to use the "shutdown" command, so this is a secondary issue,
for me at least..  
Thanks,


Doron Shiloach
Tieline: 862-3110
Phone: (914) 945-3110

Jimi Xenidis/Watson/IBM

12/07/2006 04:18 PM

To	Doron Shiloach/Watson/IBM@IBMUS
cc	David M Daly/Watson/IBM@IBMUS, Dilma M Da silva/Watson/IBM@IBMUS, Maged Michael/Watson/IBM@IBMUS
Subject	Re: shutdown/destroy domU problemLink

Doron,
First, these are awesome questions for
the mailing list  and I wish you would use it, I've asked for this
time and time again.
Second, when you say "xm shutdown"
this sends a message to the DomU to execute the program "/sbin/poweroff",
if this command does not work then you will never shut down.  Please
try executing "/sbin/poweroff" manually on the DomU and see if
that works.  For example, if I try on one of our NFSROOT images with
"init=/bin/sh" the following happens:
9:/# /sbin/poweroff
Broadcast message from root (console) (Wed Dec 31
19:02:07 1969):
The system is going down for system halt NOW!
shutdown: timeout opening/writing control channel
/dev/initctl
init: timeout opening/writing control channel /dev/initctl
9:/#
and the DomU does not shut down because
there is no "real" init process to create the /dev/intctl pipe,
this is why I cannot "xm shutdown" this domain.
If I boot the same thing but this time
I do not define "init" but add " S " to the kernel
parameters, init runs (but places be in single user mode) and now /sbin/poweroff
runs if I run it manually or if I run it from XM.

Third, I have _never_ had a problem with "xm
destroy" and it works instantly for me and I _hate_ saying "for
me".
What do you mean "but
using it a second time"?
The system freezing usually indicates that a DomU
has panic()ed, this is currently an ourstanding bug in XenPPC but is usually
only seen on UP versions.  It would be news to me to see this on an
SMP system.


thank you
http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-ppc-devel

-JX

Doron Shiloach/Watson/IBM

12/07/06 11:55 AM

To	Jimi Xenidis/Watson/IBM@IBMUS
cc	Dilma M Da silva/Watson/IBM@IBMUS, David M Daly/Watson/IBM@IBMUS, Maged Michael/Watson/IBM@IBMUS
Subject	shutdown/destroy domU problem

Hi Jimi,

I'm having problems with the shutdown/destroy
domU functionality with the latest version of Xen that David released.

Here are the versions for Xen (top)
and Linux (bottom) that we are using. 

cso85:~/xen-maria-12-4/xen-ppc # hg tip
changeset: 13183:0e85b389980a
tag: tip
user: Jimi Xenidis <jimix@xxxxxxxxxxxxxx>
date: Fri Dec 01 19:11:02 2006 -0500
summary: [XEN][POWERPC] should comment the Power Managment workaround in
the code as well 

so85:~/xen-maria-12-4/linux/linux-xen-ppc
# hg tip
changeset: 33309:f0981398b745
tag: tip
user: butrico@xxxxxxxxxxxxxxxxxxxxx
date: Mon Nov 27 13:10:34 2006 -0500
summary: Applied LTT patch 

In short, the shutdown feature does
not work properly; after issuing xm shutdown domUid, the xm list still
shows the domU present.
The xm destroy causes the domain to
go away, but using it a second time causes the machine to freeze.
Do you have time to follow this thread?
 Are there other people I should talk to about this? Thanks for your
help,

Doron Shiloach
Tieline: 862-3110
Phone: (914) 945-3110

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