Re: [Xen-devel] Need help with qemu args debug

[Fantu <fantonifabio@xxxxxxxxxx>]

Stefano Stabellini-3 wrote
> 
> On Wed, 29 Feb 2012, Fantu wrote:
>> Now I search for other options, found and tried with -global
>> qxl-vga.vram_size=4194304 but same problem...
>> 
>> do_spice_init: starting 0.10.1
>> spice_server_add_interface: SPICE_INTERFACE_MIGRATION
>> spice_server_add_interface: SPICE_INTERFACE_KEYBOARD
>> spice_server_add_interface: SPICE_INTERFACE_MOUSE
>> qemu: hardware error: xen: failed to populate ram at 40000000
> 
> You are going in the right direction but I think QXL might be doing
> other allocations other than the main vga videoram.
> Now that I think about it, another way around the memory allocation
> problem would be to add "maxmem=MEMORY" in your VM config file, where
> MEMORY is equal to the amount of memory you assign to the VM plus the
> videram.
> 
> So if you have:
> 
> memory=1024
> 
> then you could try adding:
> 
> maxmem=1088
> 
With only maxmem add not work but also with videoram and high value start
and give other error.
With videoram=64:
qemu: hardware error: xen: failed to populate ram at 44002000
With videoram=128 start qemu and spice is working but system not.

The actual domU configuration files:
----------------------------------------------------
name='PRECISEHVM'
builder="hvm"
memory=1024
maxmem=1536
vcpus=2
#hap=1
#pae=1
#acpi=1
#apic=1
#nx=1
vif=['bridge=xenbr0']
#vfb=['vnc=1,vncunused=1,vnclisten="0.0.0.0",keymap="it"']
disk=['/mnt/vm/disks/PRECISEHVM.disk1.xm,raw,hda,rw',
'/dev/sr0,raw,hdb,ro,cdrom']
boot='c'
#xen_platform_pci=1
device_model_version='qemu-xen'
vnc=0
#vncunused=1
#vnclisten="0.0.0.0"
#keymap="it"
#stdvga=1
#videoram=16
#sdl=0
spice=1
spicehost='0.0.0.0'
spiceport=6000
spicedisable_ticketing=1
#spicepasswd='test'
device_model_override="/usr/lib/xen/bin/qemu-debug.sh"
#device_model_args=["-global qxl-vga.vram_size=8388308"]
#on_crash='preserve'
videoram=128
----------------------------------------------------

Starting QEMU with: -xen-domid 45 -chardev
socket,id=libxl-cmd,path=/var/run/xen/qmp-libxl-45,server,nowait -mon
chardev=libxl-cmd,mode=control -name PRECISEHVM -vga qxl -spice
port=6000,tls-port=0,addr=0.0.0.0,disable-ticketing,agent-mouse=on -boot
order=c -smp 2,maxcpus=3 -device
rtl8139,id=nic0,netdev=net0,mac=00:16:3e:56:77:cd -netdev
type=tap,id=net0,ifname=tap45.0,script=no -M xenfv -m 1024 -drive
file=/mnt/vm/disks/PRECISEHVM.disk1.xm,if=ide,index=0,media=disk,format=raw
-drive file=/dev/sr0,if=ide,index=1,media=cdrom,format=raw


The xl dmesg PRECISEHVM: 
http://xen.1045712.n5.nabble.com/file/n5530386/xl-dmesg-PRECISEHVM
xl-dmesg-PRECISEHVM 

Connect to domU with spice work but qemu show Boot failed: could not read
the boot disk.

If you need more data require and I will post.

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