Re: [Qemu-devel] QEMU/pc and scsi disks

[Paul Brook]

On Sunday 04 March 2007 11:48, Avi Kivity wrote:
> Paul Brook wrote:
> >> Out of curiosity, why?  If the options are store in some database, as is
> >> likely, surely it is easier to generate a longish command line than to
> >> generate a unique name for a file, remove it if it already exists, write
> >> out the data, launch qemu, and clean up the file later?  And for
> >> migration, you have to regenerate it, since some options may have
> >> changed (cdrom media).
> >
> > You're going to start hitting commandline length limits fairly rapidly
> > (Windows in particular has a fairly low limit).
>
> Well, at list on linux, the limit is sane (1024 or 10240?).

IIRC linux has a ~32k commandline limit. I wouldn't be surprised if configs 
end up exceeding that.  If you're running on linux then creating a temporary 
file is also trivial[1].

Paul

[1] see mkstemp(3) and tmpfile(3).