Libguestfs - Jan 2020 - [PATCH Fedora libguestfs] Don't depend on libvirt-daemon-kvm monolith.

libguestfs usually needs qemu.  However it only requires an emulator
for the same architecture, not for all architectures.
libvirt-daemon-kvm pulls in qemu which pulls in emulators for all
architectures, as well as a bunch of other stuff we don't need at all
like network interface support and nwfilter.

There are no Fedora TCG-only arches, so drop the conditional section.

I also made support for storage backends "Recommends" so that people
can get rid of things like Gluster if they want.
---
 libguestfs.spec | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/libguestfs.spec b/libguestfs.spec
index 0d32ef0..71f97c6 100644
--- a/libguestfs.spec
+++ b/libguestfs.spec
@@ -211,12 +211,16 @@ Requires:      fuse
 # For core disk-create API.
 Requires:      /usr/bin/qemu-img
 
-# For libvirt backend.
-%ifarch %{ix86} x86_64 %{arm} aarch64
-Requires:      libvirt-daemon-kvm >= 0.10.2-3
-%else
+# For qemu direct and libvirt backends.
+Requires:      qemu-kvm-core
+Requires:      libvirt-daemon-driver-qemu
+Recommends:    libvirt-daemon-driver-storage-disk
+Recommends:    libvirt-daemon-driver-storage-gluster
+Recommends:    libvirt-daemon-driver-storage-iscsi
+Recommends:    libvirt-daemon-driver-storage-logical
+Recommends:    libvirt-daemon-driver-storage-rbd
+Recommends:    libvirt-daemon-driver-storage-scsi
 Requires:      libvirt-daemon-qemu >= 0.10.2-3
-%endif
 Recommends:    libvirt-daemon-config-network
 Requires:      selinux-policy >= 3.11.1-63
 
-- 
2.24.1

On Friday, 10 January 2020 15:05:33 CET Richard W.M. Jones
wrote:
> libguestfs usually needs qemu.  However it only requires an emulator
> for the same architecture, not for all architectures.
> libvirt-daemon-kvm pulls in qemu which pulls in emulators for all
> architectures, as well as a bunch of other stuff we don't need at all
> like network interface support and nwfilter.
> 
> There are no Fedora TCG-only arches, so drop the conditional section.
> 
> I also made support for storage backends "Recommends" so that
people
> can get rid of things like Gluster if they want.
> ---
>  libguestfs.spec | 14 +++++++++-----
>  1 file changed, 9 insertions(+), 5 deletions(-)
> 
> diff --git a/libguestfs.spec b/libguestfs.spec
> index 0d32ef0..71f97c6 100644
> --- a/libguestfs.spec
> +++ b/libguestfs.spec
> @@ -211,12 +211,16 @@ Requires:      fuse
>  # For core disk-create API.
>  Requires:      /usr/bin/qemu-img
>  
> -# For libvirt backend.
> -%ifarch %{ix86} x86_64 %{arm} aarch64
> -Requires:      libvirt-daemon-kvm >= 0.10.2-3
> -%else
> +# For qemu direct and libvirt backends.
> +Requires:      qemu-kvm-core
> +Requires:      libvirt-daemon-driver-qemu
This is OK.
> +Recommends:    libvirt-daemon-driver-storage-disk
> +Recommends:    libvirt-daemon-driver-storage-gluster
> +Recommends:    libvirt-daemon-driver-storage-iscsi
> +Recommends:    libvirt-daemon-driver-storage-logical
> +Recommends:    libvirt-daemon-driver-storage-rbd
> +Recommends:    libvirt-daemon-driver-storage-scsi
This is not needed, libguestfs does not need these libvirt drivers.
>  Requires:      libvirt-daemon-qemu >= 0.10.2-3
This still requires qemu, which in turns requires all the qemu-system-*
packages, so it has to go too.

In addition to that, we need at least the libvirt secret driver, so
require also libvirt-daemon-driver-secret.

-- 
Pino Toscano

On Fri, Jan 10, 2020 at 02:05:33PM +0000, Richard W.M. Jones
wrote:
> libguestfs usually needs qemu.  However it only requires an emulator
> for the same architecture, not for all architectures.
> libvirt-daemon-kvm pulls in qemu which pulls in emulators for all
> architectures, as well as a bunch of other stuff we don't need at all
> like network interface support and nwfilter.
> 
> There are no Fedora TCG-only arches, so drop the conditional section.
> 
> I also made support for storage backends "Recommends" so that
people
> can get rid of things like Gluster if they want.
> ---
>  libguestfs.spec | 14 +++++++++-----
>  1 file changed, 9 insertions(+), 5 deletions(-)
> 
> diff --git a/libguestfs.spec b/libguestfs.spec
> index 0d32ef0..71f97c6 100644
> --- a/libguestfs.spec
> +++ b/libguestfs.spec
> @@ -211,12 +211,16 @@ Requires:      fuse
>  # For core disk-create API.
>  Requires:      /usr/bin/qemu-img
>  
> -# For libvirt backend.
> -%ifarch %{ix86} x86_64 %{arm} aarch64
> -Requires:      libvirt-daemon-kvm >= 0.10.2-3
> -%else
> +# For qemu direct and libvirt backends.
> +Requires:      qemu-kvm-core
> +Requires:      libvirt-daemon-driver-qemu
Do you use the libvirt "secret" APIs at all (disk encryption, network
disk auth passwords) ? If so you will need
"libvirt-daemon-driver-secret"
too. How about any other libvirt sub-driver APIs ?  Networking ? Host
dev, etc  ?
> +Recommends:    libvirt-daemon-driver-storage-disk
> +Recommends:    libvirt-daemon-driver-storage-gluster
> +Recommends:    libvirt-daemon-driver-storage-iscsi
> +Recommends:    libvirt-daemon-driver-storage-logical
> +Recommends:    libvirt-daemon-driver-storage-rbd
> +Recommends:    libvirt-daemon-driver-storage-scsi
>  Requires:      libvirt-daemon-qemu >= 0.10.2-3
You need to cull this last existing line too
> -%endif
>  Recommends:    libvirt-daemon-config-network
>  Requires:      selinux-policy >= 3.11.1-63
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>

with the line culled

Regards,
Daniel
-- 
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|: https://libvirt.org         -o-            https://fstop138.berrange.com :|
|: https://entangle-photo.org    -o-    https://www.instagram.com/dberrange :|

On Fri, Jan 10, 2020 at 03:10:51PM +0100, Pino Toscano
wrote:
> >  Requires:      libvirt-daemon-qemu >= 0.10.2-3
> 
> This still requires qemu, which in turns requires all the qemu-system-*
> packages, so it has to go too.
Sorry this line was left in by accident.

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
virt-top is 'top' for virtual machines.  Tiny program with many
powerful monitoring features, net stats, disk stats, logging, etc.
http://people.redhat.com/~rjones/virt-top

On Fri, Jan 10, 2020 at 03:10:51PM +0100, Pino Toscano
wrote:
> On Friday, 10 January 2020 15:05:33 CET Richard W.M. Jones wrote:
> > libguestfs usually needs qemu.  However it only requires an emulator
> > for the same architecture, not for all architectures.
> > libvirt-daemon-kvm pulls in qemu which pulls in emulators for all
> > architectures, as well as a bunch of other stuff we don't need at
all
> > like network interface support and nwfilter.
> > 
> > There are no Fedora TCG-only arches, so drop the conditional section.
> > 
> > I also made support for storage backends "Recommends" so
that people
> > can get rid of things like Gluster if they want.
> > ---
> >  libguestfs.spec | 14 +++++++++-----
> >  1 file changed, 9 insertions(+), 5 deletions(-)
> > 
> > diff --git a/libguestfs.spec b/libguestfs.spec
> > index 0d32ef0..71f97c6 100644
> > --- a/libguestfs.spec
> > +++ b/libguestfs.spec
> > @@ -211,12 +211,16 @@ Requires:      fuse
> >  # For core disk-create API.
> >  Requires:      /usr/bin/qemu-img
> >  
> > -# For libvirt backend.
> > -%ifarch %{ix86} x86_64 %{arm} aarch64
> > -Requires:      libvirt-daemon-kvm >= 0.10.2-3
> > -%else
> > +# For qemu direct and libvirt backends.
> > +Requires:      qemu-kvm-core
> > +Requires:      libvirt-daemon-driver-qemu
> 
> This is OK.
> 
> > +Recommends:    libvirt-daemon-driver-storage-disk
> > +Recommends:    libvirt-daemon-driver-storage-gluster
> > +Recommends:    libvirt-daemon-driver-storage-iscsi
> > +Recommends:    libvirt-daemon-driver-storage-logical
> > +Recommends:    libvirt-daemon-driver-storage-rbd
> > +Recommends:    libvirt-daemon-driver-storage-scsi
> 
> This is not needed, libguestfs does not need these libvirt drivers.
Was this perhaps supposed to be qemu-block-{curl,gluster,iscsi,rbd,etc)
to get the QEMU block drivers ?
> 
> >  Requires:      libvirt-daemon-qemu >= 0.10.2-3
> 
> This still requires qemu, which in turns requires all the qemu-system-*
> packages, so it has to go too.
> 
> In addition to that, we need at least the libvirt secret driver, so
> require also libvirt-daemon-driver-secret.
> 
> -- 
> Pino Toscano

> _______________________________________________
> Libguestfs mailing list
> Libguestfs@redhat.com
> https://www.redhat.com/mailman/listinfo/libguestfs

Regards,
Daniel
-- 
|: https://berrange.com      -o-    https://www.flickr.com/photos/dberrange :|
|: https://libvirt.org         -o-            https://fstop138.berrange.com :|
|: https://entangle-photo.org    -o-    https://www.instagram.com/dberrange :|

On Fri, Jan 10, 2020 at 02:15:10PM +0000, Daniel P. Berrangé
wrote:
> Do you use the libvirt "secret" APIs at all (disk encryption,
network
> disk auth passwords) ? If so you will need
"libvirt-daemon-driver-secret"
> too. How about any other libvirt sub-driver APIs ?  Networking ? Host
> dev, etc  ?
The full list of APIs we use is attached, assuming I got my regexp
correct.
> > +Recommends:    libvirt-daemon-driver-storage-disk
> > +Recommends:    libvirt-daemon-driver-storage-gluster
> > +Recommends:    libvirt-daemon-driver-storage-iscsi
> > +Recommends:    libvirt-daemon-driver-storage-logical
> > +Recommends:    libvirt-daemon-driver-storage-rbd
> > +Recommends:    libvirt-daemon-driver-storage-scsi
In his response Pino questioned if we need these at all.  I may not
understand exactly what they do, but we *do* use libvirt XML
containing disk elements to refer to disks, as well as elements
referring to gluster, iscsi, ceph, etc.
> >  Requires:      libvirt-daemon-qemu >= 0.10.2-3
> 
> You need to cull this last existing line too
Yes, this was left over by accident.

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
Fedora Windows cross-compiler. Compile Windows programs, test, and
build Windows installers. Over 100 libraries supported.
http://fedoraproject.org/wiki/MinGW

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