Re: Guest domains dying and resurrecting

[David F Barrera <dfbp@us.ibm.com>]

Thanks for the reply. My concern is why the domains are crashing. I'll
try to get more detail, as I saw the same situation this morning on the
same machine.

On Tue, 2005-10-11 at 17:36 -0500, Khoa Huynh wrote:
> dfbp@us.ltcfwd.linux.ibm.com wrote on 10/11/2005 04:28:56 PM:
> 
> > changeset:   7313:4e335372ace8
> > tag:         tip
> > parent:      7312:713328270fb3
> > parent:      7308:959d33fbd660
> > user:        emellor@ewan
> > date:        Tue Oct 11 09:23:19 2005 +0100
> > summary:     Merged.
> >
> > Machine: IBM xSeries 235, 1GB RAM, SCSI drives.
> >
> > This is what 'xm list' shows initially:
> >
> > Name              ID  Mem(MiB)  CPU  VCPUs  State   Time(s)
> > Domain-0           0       120    0      1  r-----    899.8
> > vm1                1       127    1      1  -b----    684.8
> > vm2                2       127    1      1  -b----    555.7
> >
> > Later on, the domain IDs have incremented. I have neither manually
> > stopped nor started any guest domains:
> >
> > Name              ID  Mem(MiB)  CPU  VCPUs  State   Time(s)
> > Domain-0           0       121    0      1  r-----   1171.5
> > vm1                3       126    1      1  -b----    163.4
> > vm2                5       126    1      1  -b----     11.0
> >
> 
> This is because the domains crashed and then were restarted.
> In the domain config file (in /etc/xen), the default is:
> on_crash = restart
> You can set on_crash = preserve to prevent the domains from
> being restarted after they crash.
> 
> >
> > x235:/tmp/xen-unstable.hg # xm dmesg
> > (XEN)  Phys-Mach map: c0633000->c0652400
> > (XEN)  Start info:    c0653000->c0654000
> > (XEN)  Page tables:   c0654000->c0657000
> > (XEN)  Boot stack:    c0657000->c0658000
> > (XEN)  TOTAL:         c0000000->c0800000
> > (XEN)  ENTRY ADDRESS: c0100000
> > (XEN) Scrubbing Free RAM: ...........done.
> > (XEN) *** Serial input -> DOM0 (type 'CTRL-a' three times to switch
> > input to Xen).
> > (XEN) DOM1: (file=mm.c, line=462) Non-privileged attempt to map I/O
> > space 00000000
> 
> I have seen this error previously on my system.  After making sure that
> the domain config file is correct(several options have been changed),
> and doing a 'make mrproper' before rebuilding Xen stuff, this error
> went away (at least on my system).
> 
> Regards,
> 
> Khoa H.
> 
> 
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> http://lists.xensource.com/xen-devel
> 
-- 
Regards,

David F Barrera
Linux Technology Center
Systems and Technology Group, IBM

"The wisest men follow their own direction. "
                                                        Euripides