I have two Xen hosts, A and B, both running Xen 3.0.4.
When I migrate a guest domains from A to B, they reboot themself as soon
as the migration process is done.
When I migrate this guest domains from B to A, everything is fine.
Why is it so? Can it be because Xen hosts have slightly different CPUs
(Pentium III vs Pentium IV)?
Xen host A (guest domains have only one CPU):
# cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 15
model : 4
model name : Intel(R) Pentium(R) 4 CPU 2.66GHz
stepping : 1
cpu MHz : 2666.704
cache size : 1024 KB
fdiv_bug : no
hlt_bug : no
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 lm constant_tsc pni
monitor ds_cpl cid cx16 xtpr
bogomips : 5337.19
processor : 1
vendor_id : GenuineIntel
cpu family : 15
model : 4
model name : Intel(R) Pentium(R) 4 CPU 2.66GHz
stepping : 1
cpu MHz : 2666.704
cache size : 1024 KB
fdiv_bug : no
hlt_bug : no
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 lm constant_tsc pni
monitor ds_cpl cid cx16 xtpr
bogomips : 5337.19
Xen host B:
# cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 11
model name : Intel(R) Pentium(R) III CPU family 1266MHz
stepping : 1
cpu MHz : 1260.597
cache size : 512 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu tsc msr pae mce cx8 apic mtrr mca cmov pat pse36
mmx fxsr sse
bogomips : 2522.07
--
Tomasz Chmielewski
http://wpkg.org
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