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Fwd: [Libvir] Updated Solaris dom0 patch (part 1)



sorry, missed the cc.....

---------- Forwarded message ----------
From: Mark Johnson <johnson nh gmail com>
Date: Sep 28, 2007 4:09 PM
Subject: Re: [Libvir] Updated Solaris dom0 patch (part 1)
To: "Daniel P. Berrange" <berrange redhat com>


On 9/28/07, Daniel P. Berrange <berrange redhat com> wrote:
> On Fri, Sep 28, 2007 at 03:03:15PM -0400, Mark Johnson wrote:
> >
> > I've broken this patch up into a few pieces to make
> > it more reviewable and tried to address the comments
> > from the previous patch (Jun 15th'ish if your looking).
> >
> > Here is first part...
> >
> > tested on today's CVS bits on a FC7 dom0
> >  (LD_PRELOAD=src/.libs/libvirt.so src/.libs/virsh)
> >
> > One note, it looks like you still need a xend change on
> > FC7 before the no kernel/bootloader option works. It
> > looks like it's close though.. works fine with them
> > of course.
> >
> >
> > More details...
> >
> >
> > [root fedora solaris]# cat guest.py
> > name = "solaris"
> > vcpus = 1
> > memory = "512"
> >
> > #bootloader = "/usr/bin/pygrub"
> > #kernel = "/platform/i86xpv/kernel/unix"
> > #ramdisk = "/platform/i86pc/boot_archive"
> > extra = "-k"
> >
> > root = "/dev/dsk/c0d0s0"
> > disk = ['file:/export/guests/solaris/disk.img,0,w']
>
> Oooh, that's interesting. Can you explain a little about Solaris paravirt
> disk naming, since it doesn't use xvdN/hdN/sdN style config ?

No, it uses a disk #... 0, 1, 2, 3, 4.. We also have a PV :cdrom
e.g. for an install...

disk = ['file:/tank/guests/install/solaris/66-0624-nd.iso,6:cdrom,r',
        'file:/tank/guests/install/solaris/disk.img,0,w']

> Does the
> HVM disk naming still use the named devs ?

Yes. That is the same.


> Also one other question. There is a config option
>
> builder='linux'
>
> Which is never used on Linux since 'linux' is the default. Do you change
> the default on Solaris, or dooes the existing 'linux' builder work just
> fine with Solaris DomU images ?  I guess the latter, since the SEXPR
> you have below is using 'linux'.

Yep, we use the linux domain builder...



> > [root fedora solaris]# xm list -l solaris
> > (domain
> >     (on_crash destroy)
> >     (uuid 72f9b45e-4be9-bf1f-a500-3707b9c3922c)
> >     (bootloader_args )
> >     (vcpus 1)
> >     (name solaris)
> >     (on_poweroff destroy)
> >     (on_reboot restart)
> >     (bootloader )
>
> Since I notice it has the bootloader bit in the SEXPR, I'm thinking I'll
> tweak our XML generation so it at least includes an empty <bootloade/>
> since there may be tools using libvirt which expect at least one of <os>
> or <bootloader> and using an empty tag may keep them happier.
>
> eg, it'd probably avoid this problem...

OK.



MRJ


> > virsh # console solaris
> > libvir: Xen Daemon error : internal error domain information incomplete, missing kernel & bootloader
> > domain.xml:25: parser error : Opening and ending tag mismatch: os line 4 and domain
> > </domain>
> >          ^
> > domain.xml:26: parser error : Premature end of data in tag domain line 1
>
>
> Though obviously your patch fixes that too.
>
> Dan.
> --
> |=- Red Hat, Engineering, Emerging Technologies, Boston.  +1 978 392 2496 -=|
> |=-           Perl modules: http://search.cpan.org/~danberr/              -=|
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