[Xen-users] VMX and resizing memory

["James Miller" <jimm@xxxxxxxxxxxxxxx>]

Has anyone had any success with using mem-set and mem-max in a VMX based
domU (windows 2003 in this case)?  I'm running Xen 3.0-unstable w/2GB RAM

Initial Win2003_base xm list
Name                              ID Mem(MiB) VCPUs State  Time(s)
Domain-0                           0      512     1 r----- 49838.0
Win2003_base                      21      512     1 -b----    18.3


xm mem-set 21 768
 xm list
Name                              ID Mem(MiB) VCPUs State  Time(s)
Domain-0                           0      512     1 r----- 49844.3
Win2003_base                      21      768     1 -b----    19.1

But the Win2003 domU doesn't see the additional RAM

The same is true if I run 'xm mem-set 21 384' to lower the amount of ram.
The domU doesn't see the smaller amount of RAM.
 xm list
Name                              ID Mem(MiB) VCPUs State  Time(s)
Domain-0                           0      512     1 r----- 49850.5
Win2003_base                      21      384     1 -b----    22.0


Also, I've noticed setting 'extra="mem-max=1024"' in the config file doesn't
seem to have the desired effect:
xentop - 13:56:54   Xen 3.0-unstable
Mem: 3397720k total, 1222484k used, 2175236k free    CPUs: 2 @ 3000MHz
NAME  STATE   CPU(sec) CPU(%)     MEM(k) MEM(%)  MAXMEM(k) MAXMEM(%)
Win2003_base --b---  15    0.0     528384   15.6     541904      15.9

However if I run from the cli 'xm mem-max dom# 1024' I DO get the desired
effect:
NAME  STATE   CPU(sec) CPU(%)     MEM(k) MEM(%)  MAXMEM(k) MAXMEM(%)
Win2003_base --b---         17    0.5     528384   15.6    1048576

Here's my config:
kernel = "/usr/lib/xen/boot/hvmloader"
builder='hvm'
memory = 512
extra="mem-max=1024"
name = "Win2003_base"
vcpus=1
pae=0
acpi=0
apic=1
cpus = ""
vif = [ 'type=ioemu, bridge=xenbr0' ]
disk = [ 'file:/xen/xenimages/Win2003_base.img,ioemu:hda,w' ]
on_poweroff = 'destroy'
on_reboot   = 'destroy'
on_crash    = 'destroy'
device_model = '/usr/lib/xen/bin/qemu-dm'
cdrom='/data/en_windows_server_2003_standardsp1_enterprisesp1.iso'
boot='c'
sdl=0
vnc=1
vncviewer=0
stdvga=0
serial='pty'
ne2000=0



Thanks,
Jim


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