[Xen-bugs] [Bug 436] domU crash on first migration

[bugzilla-daemon@xxxxxxxxxxxxxxxxxxx]

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=436





------- Additional Comments From madams@xxxxxxxxxx  2005-12-06 20:40 -------
It was a live migration.  Standard 32 bit.  Built from source.

Host A cpuinfo:
cat /proc/cpuinfo

processor       : 0
vendor_id       : GenuineIntel
cpu family      : 15
model           : 3
model name      : Intel(R) Pentium(R) 4 CPU 2.80GHz
stepping        : 4
cpu MHz         : 2793.114
cache size      : 1024 KB
fdiv_bug        : no
hlt_bug         : yes
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 5
wp              : yes
flags           : fpu tsc msr pae mce cx8 apic mtrr mca cmov pat pse36 clflush
dts acpi mmx fxsr sse sse2 ss ht tm pbe pni monitor ds_cpl cid xtpr
bogomips        : 5583.66

Cpuinfo from Host B:
cat /proc/cpuinfo
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 8
model name      : Pentium III (Coppermine)
stepping        : 6
cpu MHz         : 1112.369
cache size      : 256 KB
fdiv_bug        : no
hlt_bug         : yes
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 2
wp              : yes
flags           : fpu tsc msr pae mce cx8 mtrr mca cmov pat pse36 mmx fxsr sse
bogomips        : 3984.58

Host A and B both have approximately 512M ram

Host A dom0 memory  - 320M
Host B dom0 memory  - 320M

DomU - Root filesystem for is nfs ( exported from Host A )
DomU - Swap space is looped back via file on root filesystem 

Symptom:
Bring up DomU on host A, live migrate to Host B.  While DomU is migrating, can
see it as domain 4 on Host B, in paused state( xm list).  Once it crashes, I see
as domain 5 on Host B.  If I then xm console 5, I see the boot up process. 
Filesystems recover and I then have new instance of DomU.  Once it crashes, I
can then live migrate back and forth between Host A and B without the crash
recurring.




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