[CentOS] error creating Centos 5.1 x32 dum_U instance on CentOS 5.1 x64

[Rudi Ahlers]

Tom Brown wrote:
>
>>>
>> Are you sure? I've read on a few different sites / emails that people 
>> do this, mainly because the 64bit version can handle the large 
>> amounts of memory typically found in dedicated servers.
>>
>
> http://www.redhat.com/docs/manuals/enterprise/RHEL-5-manual/Virtualization-en-US/ch-virt-hw-support.html 
>
>
> "With Red Hat Virtualization, 32-bit hosts runs only 32-bit 
> paravirtual guests. 64-bit hosts runs only 64-bit paravirtual guests. 
> And a 64-bit full virtualization host runs 32-bit, 32-bit PAE, or 
> 64-bit guests. A 32-bit full virtualization host runs both PAE and 
> non-PAE full virtualization guests."
>
> _______________________________________________
> CentOS mailing list
> CentOS at centos.org
> http://lists.centos.org/mailman/listinfo/centos
>
Yes, so I can run 32bit guests on 64bit host,but with full 
virtualization. How do I know if a) my system supports it, and b) my 
kernel / OS has full virtualization enabled?

I have an intel Core 2 Duo 6750 CPU, which has Intel VT, and it's 
enabled in the BIOS, as can be seen here:


[root at gimbli ~]# cat /proc/cpuinfo
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 15
model name      : Intel(R) Core(TM)2 Duo CPU     E6750  @ 2.66GHz
stepping        : 11
cpu MHz         : 2666.742
cache size      : 4096 KB
physical id     : 0
siblings        : 1
core id         : 0
cpu cores       : 1
fpu             : yes
fpu_exception   : yes
cpuid level     : 10
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 syscall nx lm constant_tsc 
pni monitor ds_cpl vmx smx est tm2 cx16 xtpr lahf_lm
bogomips        : 6669.70
clflush size    : 64
cache_alignment : 64
address sizes   : 36 bits physical, 48 bits virtual
power management:

processor       : 1
vendor_id       : GenuineIntel
cpu family      : 6
model           : 15
model name      : Intel(R) Core(TM)2 Duo CPU     E6750  @ 2.66GHz
stepping        : 11
cpu MHz         : 2666.742
cache size      : 4096 KB
physical id     : 1
siblings        : 1
core id         : 0
cpu cores       : 1
fpu             : yes
fpu_exception   : yes
cpuid level     : 10
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 syscall nx lm constant_tsc 
pni monitor ds_cpl vmx smx est tm2 cx16 xtpr lahf_lm
bogomips        : 6669.70
clflush size    : 64
cache_alignment : 64
address sizes   : 36 bits physical, 48 bits virtual
power management:


What else do I need todo?

 uname -a
Linux gimbli 2.6.18-53.1.13.el5xen #1 SMP Tue Feb 12 13:33:07 EST 2008 
x86_64 x86_64 x86_64 GNU/Linux


-- 

Kind Regards
Rudi Ahlers
CEO, SoftDux

Web:   http://www.SoftDux.com
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