2018-01-10 8:15 GMT+01:00 Chris Marusich <cmmarusich@gmail.com>:

> Catonano <catonano@gmail.com> writes:
>
> > the script produced by system vm contains this bit:
> >
> > -m  256
> >
> > does this mean that the guest has 256 Mb ?
>
> Yes.  The qemu manual describes this in more detail (section 2.3,
> "Invocation"):
>
> https://qemu.weilnetz.de/doc/qemu-doc.html
>
> You might want to bookmark it or keep a local copy; it's a useful
> reference manual.
>
> > Can I pass a switch to system vm so that it concedes more memory to my
> > guest ?
> > Similar to "   --image-size=10GB " but for ram space rather than disk
> space
>
> Yes, you can.  The Guix manual explains ((guix) Invoking guix system):
>
>      Arguments given to the script are passed to QEMU as in the example
>      below, which enables networking and requests 1 GiB of RAM for the
>      emulated machine:
>
>           $ /gnu/store/...-run-vm.sh -m 1024 -net user
>

Ok, thanks


>
> > Ok, second observation:
> >
> > 2)
> >
> > if instead of system vm I use system vm-image,
> > --share=$HOME/transit=/transit doesn't work
> > So it seems
> > Why ?
> > Couldn't it work anyway ?
>
> I don't think that will work.  I'm pretty sure that the --share option
> is specific to "guix system".  What you probably want to do is look at
> the options used in the /gnu/store/...-run-vm.sh script, and mimic what
> it does.  If you see QEMU options in there that you don't understand,
> try looking them up in the QEMU manual.
>
> By the way, there is a "--share" option mentioned in the QEMU manual,
> but it seems to be totally unrelated (section 2.7.10, "NBD access").
>
> > Pheew ;-)
>
> Hang in there!  QEMU is extremely versatile, but it's got a little bit
> of a learning curve.  Beyond the reference manual, you can find even
> more documentation here:
>
> https://wiki.qemu.org/Manual
>
> Hope that helped.  Good luck!
>

That helped !
Thanks !