Re: [kvm-devel] [Qemu-devel] Re: [PATCH] Add support for a configuration file

[Avi Kivity <avi@qumranet.com>]

Daniel P. Berrange wrote:
> On Thu, May 15, 2008 at 11:04:47AM +0300, Avi Kivity wrote:
>   
>> Daniel P. Berrange wrote:
>>     
>>> With this kind of syntax, now tools generating config files need to make
>>> up unique names for each drive. So you'll probably end up with them just
>>> naming things based on the class name + a number appended.
>>>  
>>>       
>> I would hope that tools don't have to resort to reading and writing 
>> these config files.  Usually a management system would prefer storing 
>> parameters in its own database, and writing a temporary config file just 
>> to pass the data seems awkward.  I would much prefer to see the command 
>> line and monitor retain full control over every configurable parameter.
>>     
>
> I expect that libvirt will create config files - it is only a matter of
> time before we hit the command line ARGV length limits - particularly
> with the -net and -drive syntax. People already requesting that we support
> guests with > 16 disks, and > 8 network cards so command lines get very
> long. 
>   

What are those limits, btw? ISTR 10240 words, but how many chars?

> I wouldn't write out the config file to disk though - I'd just send it
> on the fly on stdin -, eg   'qemu -config -'  to tell it to read the config
> on its stdin.
>   

That's fine from my point of view.

-- 
error compiling committee.c: too many arguments to function