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xen-users
Re: [Xen-users] Physical memory not fully available to DomU's
Hmm, just one reply of somebody who has the same issue. No one else
encountered this problem? Or has any kind of clue?
Met vriendelijke groet,
Dennis Storm
Senior Systeembeheerder
Vestiging Groningen
| Hoendiep 208 |
T +31
(0)50 577 58 22 |
Bekijk onze
actuele projecten |
| 9745 ED Groningen |
F +31
(0)50 577 58 23 |
www.drecomm.nl
|
Op 2-9-2011 21:44, Dennis Storm schreef:
Hi,
I'm having a weird problem with one of my Xen machines. I have a 96Gb
ram server, running on Debian 6 with Xen kernel. However, I can only
assign memory out of a pool of 24GB, the rest is unavailable for
assignment. When trying to run a new DomU i'm getting the error that
there isn't enough free ram. However, when I do the math myself I can
see that there's 22GB of ram in use, which leave 74GB available (minus
Dom0 minimum limit, which is set at 8GB).
I've tried disabling ballooning, i als saw posts of ram missing due to
the balloondriver, but nothing in the likes of this volume of missing ram.
Any help would be very much appreciated. Seems a shame to let 74GB go to
waste. If you need any more info, please let me know!
XM info output:
--------------
host : <blotted out>
release : 2.6.32-5-xen-amd64
version : #1 SMP Tue Jun 14 12:46:30 UTC 2011
machine : x86_64
nr_cpus : 16
nr_nodes : 2
cores_per_socket : 4
threads_per_core : 2
cpu_mhz : 2400
hw_caps :
bfebfbff:2c100800:00000000:00001f40:009ee3fd:00000000:00000001:00000000
virt_caps : hvm
total_memory : 98295
free_memory : 19
node_to_cpu : node0:0-3,8-11
node1:4-7,12-15
node_to_memory : node0:19
node1:0
node_to_dma32_mem : node0:0
node1:0
max_node_id : 1
xen_major : 4
xen_minor : 0
xen_extra : .1
xen_caps : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32
hvm-3.0-x86_32p hvm-3.0-x86_64
xen_scheduler : credit
xen_pagesize : 4096
platform_params : virt_start=0xffff800000000000
xen_changeset : unavailable
xen_commandline : placeholder
cc_compiler : gcc version 4.4.5 (Debian 4.4.5-10)
cc_compile_by : waldi
cc_compile_domain : debian.org
cc_compile_date : Wed Jan 12 14:04:06 UTC 2011
xend_config_format : 4
--------------
XM List output:
-----------
Name ID Mem VCPUs State
Time(s)
Domain-0 0 11257 16 r-----
24477.0
<hostname blotted out> 25 256 8 -b----
4233.8
<hostname blotted out> 11 1024 8 -b----
1725.5
<hostname blotted out> 2 4192 8 r-----
66563.5
<hostname blotted out> 3 512 16 -b----
15330.1
<hostname blotted out> 17 512 16 -b----
5249.6
<hostname blotted out> 18 512 16 -b----
12292.2
<hostname blotted out> 19 512 1 -b----
6620.5
<hostname blotted out> 8 512 16 -b----
1554.6
<hostname blotted out> 9 1024 4 -b----
1837.1
<hostname blotted out> 12 1024 4 -b----
5932.5
<hostname blotted out> 13 1024 16 -b----
35491.3
<hostname blotted out> 22 1024 8 -b----
5505.7
<hostname blotted out> 20 512 1 -b----
15667.6
<hostname blotted out> 23 2816 8 -b----
6621.9
<hostname blotted out> 26 512 1 -b----
11633.6
<hostname blotted out> 28 512 16 -b----
906.9
<hostname blotted out> 15 512 1 -b----
17502.6
<hostname blotted out> 27 256 1 -b----
3924.0
<hostname blotted out> 7 512 1 -b----
12216.5
<hostname blotted out> 6 512 1 -b----
9732.1
<hostname blotted out> 29 2048 16 -b----
1738.4
<hostname blotted out> 4 256 8 -b----
4346.0
<hostname blotted out> 30 2048 8 -b----
4066.8
Total ram used for all DomU's: 22624MB
----------------------
Config for DomU (generic for all running DomU's, except ram and core
assignments)
----------------------
#
# Kernel + memory size
#
kernel = '/boot/vmlinuz-2.6.32-5-xen-amd64'
ramdisk = '/boot/initrd.img-2.6.32-5-xen-amd64'
memory = '2048'
vcpus = '8'
extra = 'xencons=tty'
#
# Disk device(s).
#
root = '/dev/xvda1 ro'
disk = [ 'file:/storage/target/disk.img,xvda,w',
'file:/storage/target/swap.img,xvdb,w' ]
#
# Hostname
#
name = '<hostname blotted out>'
#
# Networking
#
vif = [ 'ip=<obscured>' ]
#
# Behaviour
#
--------
xend-config.sxp
--------
(network-script network-bridge)
(vif-script vif-bridge)
(dom0-min-mem 196)
(enable-dom0-ballooning yes)
(total_available_memory 0)
(dom0-cpus 0)
----------
Kind regards,
Dennis Storm - Drecomm BV
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