[CentOS] error creating Centos 5.1 x32 dum_U instance on CentOS5.1 x64

[Rudi Ahlers]

Rudi Ahlers wrote:
> Ross S. W. Walker wrote:
>>
>> Nah, RHEL 5.1+ supports 32-bit domU (PAE and non PAE) on 64-bit dom0.
>>
>> Actually RHEL Xen is 3.1 with the brain damaged 3.0 userland utilities.
>>
>> -Ross
>>
>>
>> ----- Original Message -----
>>
> I've run into an interesting problem, which trying to install a 64bit 
> guest:
>
>
> libvir: Xen Daemon error : POST operation failed: (xend.err 'Error 
> creating domain: I need 524288 KiB, but dom0_min_mem is 262144 and 
> shrinking to 262144 KiB would leave only 461040 KiB free.')
> Traceback (most recent call last):
>  File "/usr/sbin/virt-install", line 633, in ?
>    main()
>  File "/usr/sbin/virt-install", line 578, in main
>    dom = guest.start_install(conscb,progresscb)
>  File "/usr/lib/python2.4/site-packages/virtinst/Guest.py", line 649, 
> in start_install
>    return self._do_install(consolecb, meter)
>  File "/usr/lib/python2.4/site-packages/virtinst/Guest.py", line 666, 
> in _do_install
>    self.domain = self.conn.createLinux(install_xml, 0)
>  File "/usr/lib64/python2.4/site-packages/libvirt.py", line 503, in 
> createLinux
>    if ret is None:raise libvirtError('virDomainCreateLinux() failed', 
> conn=self)
> libvirt.libvirtError: virDomainCreateLinux() failed POST operation 
> failed: (xend.err 'Error creating domain: I need 524288 KiB, but 
> dom0_min_mem is 262144 and shrinking to 262144 KiB would leave only 
> 461040 KiB free.')
>
>
> [root at gimbli ~]# 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
> [root at gimbli ~]# cat /proc/meminfo
> MemTotal:       713728 kB
> MemFree:        503028 kB
> Buffers:         25284 kB
> Cached:          69356 kB
> SwapCached:          0 kB
> Active:          67144 kB
> Inactive:        55820 kB
> HighTotal:           0 kB
> HighFree:            0 kB
> LowTotal:       713728 kB
> LowFree:        503028 kB
> SwapTotal:     2096472 kB
> SwapFree:      2096472 kB
> Dirty:              40 kB
> Writeback:           0 kB
> AnonPages:       28280 kB
> Mapped:           7584 kB
> Slab:            17004 kB
> PageTables:       2316 kB
> NFS_Unstable:        0 kB
> Bounce:              0 kB
> CommitLimit:   2453336 kB
> Committed_AS:   145988 kB
> VmallocTotal: 34359738367 kB
> VmallocUsed:      2204 kB
> VmallocChunk: 34359735799 kB
>
>
> Even though Linux reports only 713MB RAM, the machine has 2GB RAM. How 
> / where do I fix this?
>
I also saw this:

xentop - 18:04:44   Xen 3.1.0-53.1.13.el5
4 domains: 1 running, 1 blocked, 0 paused, 0 crashed, 0 dying, 0 shutdown
Mem: 2086396k total, 2076932k used, 9464k free    CPUs: 2 @ 2666MHz
      NAME  STATE   CPU(sec) CPU(%)     MEM(k) MEM(%)  MAXMEM(k) 
MAXMEM(%) VCPUS NETS NETTX(k) NETRX(k) VBDS   VBD_OO   VBD_RD   VBD_WR SSID
  Domain-0 -----r        122    1.6     713728   34.2   no limit       
n/a     2    4     4091   121100    0        0        0        0    0
      vm01 --b---         42    0.2     262000   12.6     262144      
12.6     1    1     1680    98659    0        0        0        0    0



xen top shows the full RAM, but the system itself doesn't?

-- 

Kind Regards
Rudi Ahlers
CEO, SoftDux

Web:   http://www.SoftDux.com
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