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Re: [Xen-devel] [linux-linus test] 17480: regressions - FAIL

On Fri, Apr 05, 2013 at 03:47:38PM +0100, xen.org wrote:
> flight 17480 linux-linus real [real]
> http://www.chiark.greenend.org.uk/~xensrcts/logs/17480/
> Regressions :-(

It is the same as the last one - the install of RHEL6 fails
and the migrate of a guest fails.

The migration has the guest paused:

debian.guest.osstest                         1   512     0     --p---      0.0
and on the other host:

debian.guest.osstest                         1   512     1     -b----       7.3

On the gall (where it is blocked) we see it is happilly running along:

Call Trace:
  [<c10023a7>] xen_hypercall_sched_op+0x7  <--
  [<c1051002>] xen_safe_halt+0x12 
  [<c1050ff0>] xen_safe_halt 
  [<c1061c44>] default_idle+0x44 
  [<c1061506>] cpu_idle+0x76 
  [<c167b948>] rest_init+0x58 
  [<c18efbc9>] start_kernel+0x357 
  [<c18ef6e3>] unknown_bootoption 
  [<c18ef369>] i386_start_kernel+0x12c 
  [<c18f2e92>] xen_start_kernel+0x659

What would be useful is to figure out what 'mite' thought about the
migration, but sadly the 'val/log/xen/xend.log' file shows nothing!?

Anyhow, the failure is with xc_save which tells us this command:

xm migrate debian.guest.osstest itch-mite

fails with:
+ exit 4
Error: /usr/lib/xen/bin/xc_save 23 1 0 0 0 failed
Usage: xm migrate <Domain> <Host>

I've no idea what '4' is.

Ian, would it be possible to compile xc_save with the debug options enabled?

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