[Xen-bugs] [Bug 1060] New: Live-Migrating leads to a dom0 Oops and leaves a migrating-xxx domU

[bugzilla-daemon@xxxxxxxxxxxxxxxxxxx]

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1060

           Summary: Live-Migrating leads to a dom0 Oops and leaves a
                    migrating-xxx domU
           Product: Xen
           Version: 3.0.3
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Hypervisor
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: xen@xxxxxxxxxxxx


(Note that this error report looks similar to Bug#1059,
but the system behaviour is quiet different; also the Oops
and xend.log looks different.)

When live-migrating a domU which runs memtester
(see: http://pyropus.ca/software/memtester/)
# memtest 400M
a kernel Oops occured.  (see attached /var/log/kern.log)

Also the following error occured: (see attached /var/log/xend.log)
[2007-09-10 19:47:02 xend 2212] ERROR (__init__:1072) Save failed on domain
vm02 (30).
Traceback (most recent call last):
  File "/usr/lib/xen-3.0.3-1/lib/python/xen/xend/XendCheckpoint.py", line 100,
in save
    forkHelper(cmd, fd, saveInputHandler, False)
  File "/usr/lib/xen-3.0.3-1/lib/python/xen/xend/XendCheckpoint.py", line 227,
in forkHelper
    raise XendError("%s failed" % string.join(cmd))
XendError: /usr/lib/xen-3.0.3-1/bin/xc_save 21 30 0 0 1 failed

Afterwards the Guest System vm02 is renamed to migrating-vm02 - it still runs.
When trying to shutdown the Guest System, it transforms into a VM Zombie.

# xm list
Name                                      ID Mem(MiB) VCPUs State   Time(s)
Domain-0                                   0     1498     2 r-----   2447.9
migrating-vm02                            31      512     1 r-----  49961.3
# xm shutdown migrating-vm02
# xm list
Name                                      ID Mem(MiB) VCPUs State   Time(s)
Domain-0                                   0     1498     2 r-----   2452.1
Zombie-migrating-vm02                     31      512     1 ---s-d  51493.7

System (dom0):
2*Intel(R) Pentium(R) III CPU - S 1400MHz
2GByte RAM
Debian 4.0
Linux 2.6.20-1-xen-686 #1 SMP Wed Apr 25 02:12:58 UTC 2007 i686 GNU/Linux

System (domU):
Debian 4.0
Linux 2.6.18-4-xen-686 #1 SMP Mon Mar 26 21:49:04 UTC 2007 i686 GNU/Linux


Kind Regards

Andreas Florath


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