Re: [Xen-devel] drjones@xxxxxxxxxx, vkuznets@xxxxxxxxxx, leiwang@xxxxxxxxxx, wshi@xxxxxxxxxx

[George Dunlap <George.Dunlap@xxxxxxxxxxxxx>]

On Fri, Apr 18, 2014 at 2:40 AM, Lingfei Kong <lkong@xxxxxxxxxx> wrote:
> Hello,
> When i create a guest with option 'cpus="0-3"' on the command line, xl can 
> not parse the config. But it works well when i specify 'cpus=1' on the 
> command line. I read the man page xl.cfg, learned that xl support the 
> following format:
> "0-3,5,^1"
> so  it would be very nice if xl can support this format on the command line 
> too.
>
> Also i have file a bug on bugzilla: Bug 1886 - option `cpus="0-3"` works well 
> when you specify it in a configure file, but it give a error feadback when 
> you add it to the command line
>
>
>
> The following are the  details:
>
> Description of problem:
> option `cpus="0-3"` works well when you specify it in a configure file, but 
> it give a error feadback when you add it to the command line.
>
> Version-Release number of selected component (if applicable):
>
> How reproducible:
> 100%
>
> Steps to Reproduce:
> 1. Install a host with xen4
> 2. Create a guest, add option 'cpus="0-3"' on the command line
> # xl -v create hvm-7.0-64-1.cfg cpus="0-3"
> Parsing config from hvm-7.0-64-1.cfg
> hvm-7.0-64-1.cfg:28: config parsing error near `-3': lexical error
> warning: Config file looks like it contains Python code.
> warning:  Arbitrary Python is no longer supported.
> warning:  See http://wiki.xen.org/wiki/PythonInXlConfig
> Failed to parse config: Invalid argument

The problem here is that your shell is discarding the quotes; so what
xl sees is 'cpus=0-3', not 'cpus="0-3"'.  Try the following:

# xl -v create hvm-7.0-64-1.cfg cpus=\"0-3\"

-George

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