Hi all,
I have strange problem with memory allocation on my xen server.
My xen server:
- distro: Debian squeeze
- xen-hypervisor: xen-hypervisor-4.0-i386 4.0.1-1
- boot options: /xen-4.0-i386.gz placeholder dom0_mem=256M
Dom0:
- kernel: 2.6.32-5-xen-686 #1 SMP
- /etc/xen/xend-config.sxp:
(dom0-min-mem 256)
(enable-dom0-ballooning no)
DomU:
- name: storage
- distro: Debian squeeze
- kernel: - kernel: 2.6.32-5-xen-686 #1 SMP (the same like Dom0)
memory = ''128''
maxmem = ''512''
DomU:
- name: alien
- distro: Debian lenny
- kernel: 2.6.26-2-xen-686 #1 SMP
memory = ''320''
maxmem = ''768''
The strange thing is when I try to set memory in DomU storage.
I try to set memory on DomU storage:
storage:~$ free
total used free shared buffers cached
Mem: 126604 123992 2612 0 29748 59028
xen# xm list storage
Name ID Mem VCPUs State Time(s)
storage 1 128 2 -b---- 6224.8
xen# xm mem-set storage 196
xen# xm list storage
Name ID Mem VCPUs State Time(s)
storage 1 196 2 -b---- 6225.2
storage:~$ free
total used free shared buffers cached
Mem: 126604 123732 2872 0 30044 60748
I can see on Dom0 that DomU ''storage'' has 196MB, but on DomU
''storage''
I don''t see it.
In other case if I set for example 90 - it is working. But I can''t set
over 128 (startup setting)
But in another example all is ok:
alien:~$ free
total used free shared buffers cached
Mem: 327680 313544 14136 0 4232 33956
xen# xm list alien
Name ID Mem VCPUs State Time(s)
alien 2 320 2 -b---- 993.7
xen# xm mem-set alien 400
xen# xm list alien
Name ID Mem VCPUs State Time(s)
alien 2 400 2 -b---- 994.2
alien:~$ free
total used free shared buffers cached
Mem: 409600 313816 95784 0 4292 33960
I am trying to change balloonig settnigs, other memory setting,
rebooting a lot, but nothing helped.
I have several DomUs and I found that I can manage memory on kernels
2.6.26, but not above.
Any idea what is wrong?
Best regards,
Marcin Kuk
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