Re: [Xen-users] Xen4: problem with vcpu_avail

[Jan Marquardt <jm@xxxxxxxxxxx>]

On 09/09/2010 04:08 PM, Jan Marquardt wrote:
> Hi,
>
> we've started using Xen 4.0.1 yesterday and know we have a problem with
> vcpu_avail within our domu configs, which work as intended with Xen 3.2.
>
> In our config we have the following 2 lines:
>
> vcpus = 8
> vcpu_avail = 1
>
> After starting the domu, it has got 8 cpus instead of 1. Does anyone
> know if this option has changed with Xen4 or what may cause vcpu_avail
> to fail?
I did some testing on this topic and found out that in 
/var/log/xen/xend.log it always says "'vcpu_avail': '255'". It makes no 
difference if I set vcpu_avail to 1, 8, 255 or anything else or remove 
it completely from the config. Any ideas?
[2010-09-10 11:02:45 6309] DEBUG (XendDomainInfo:3400) Storing VM 
details: {'on_xend_stop': 'ignore', 'shadow_memory': '0', 'uuid': 
'58c2fdf8-3ef0-3924-cb3f-1cc955913503', 'on_reboot': 'restart', 
'start_time': '1284109365.08', 'on_poweroff': 'destroy', 
'bootloader_args': '', 'on_xend_start': 'ignore', 'on_crash': 'restart', 
'xend/restart_count': '0', 'vcpus': '8', 'vcpu_avail': '255', 
'bootloader': '', 'image': "(linux (kernel 
/home/xen/shared/boot/debian/vmlinuz-2.6.26-2-xen-686) (ramdisk 
/home/xen/shared/boot/debian/initrd.img-2.6.26-2-xen-686) (args 
'root=/dev/md0 ro 2 TERM=xterm xencons=tty console=tty1 clock=jiffies') 
(superpages 0) (tsc_mode 0) (videoram 4) (pci ()) (nomigrate 0) (notes 
(HV_START_LOW 4118806528) (FEATURES 
'writable_page_tables|writable_descriptor_tables|auto_translated_physmap|pae_pgdir_above_4gb|supervisor_mode_kernel') 
(VIRT_BASE 3221225472) (GUEST_VERSION 2.6) (PADDR_OFFSET 0) (GUEST_OS 
linux) (HYPERCALL_PAGE 3222278144) (LOADER generic) (SUSPEND_CANCEL 1) 
(PAE_MODE yes) (ENTRY 3222274048) (XEN_VERSION xen-3.0)))", 'name': 
'www434'}
> Thanks in advance for your help.
>
> Cheers,
>
> Jan
>
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