[Libguestfs] How to debug supermin5 issue?

[Pino Toscano]

On Thursday, 21 July 2016 20:04:05 CEST Chen Hanxiao wrote:
> 
> At 2016-07-21 19:52:11, "Pino Toscano" <ptoscano at redhat.com> wrote:
> >On Thursday, 21 July 2016 18:50:52 CEST Chen Hanxiao wrote:
> >> 
> >> At 2016-07-21 18:43:04, "Richard W.M. Jones" <rjones at redhat.com> wrote:
> >> >On Thu, Jul 21, 2016 at 06:36:20PM +0800, Chen Hanxiao wrote:
> >> >> the virtio modules in kmods did existed in this machine.
> >> >> with -v -v -v, I got:
> >> >
> >> >Can you attach or pastebin the complete output from this command on
> >> >the failing machine please:
> >> >
> >> >supermin5 --build -f ext2 -v -v -v /usr/lib64/guestfs/supermin.d -o /tmp/appliance.d
> >> >
> >> 
> >> Sure.
> >> 
> >> Please check the attachments.
> >
> >Hm, is the /lib/modules/3.10.0-229.el7.x86_64/modules.dep file correct
> >(as in existing and not empty)?  If so, what if you run as root
> >`depmod -a` and then try again?
> >
> 
> Hi, Pino:
> 
> Thanks for your hint.
> I think we got the key:
> 
> on the machine fail:
> we lack of lines like:
> 
> kernel/drivers/char/hw_random/amd-rng.ko:
> kernel/drivers/char/hw_random/via-rng.ko:
> kernel/drivers/char/hw_random/virtio-rng.ko: kernel/drivers/virtio/virtio_ring.ko kernel/drivers/virtio/virtio.ko
> kernel/drivers/char/hw_random/tpm-rng.ko:
> kernel/drivers/char/tpm/tpm_nsc.ko:
> kernel/drivers/char/tpm/tpm_atmel.ko:
> kernel/drivers/char/tpm/tpm_infineon.ko:
> kernel/drivers/char/virtio_console.ko: kernel/drivers/virtio/virtio_ring.ko kernel/drivers/virtio/virtio.ko
> ...
> 
> which existed on the machine works fine.
> 
> It works fine now.
> 
> But why we make initrd only depends on modules.dep?

supermin copies some needed modules in the initrd, and of course also
the dependencies of these modules need to be copied as well.
Copying a module without the needed modules for it means it won't even
load.

-- 
Pino Toscano
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