virtio disk drive was not detected as available

[Dimitri John Ledkov]

I had to change bus to SATA to get the hard drive detected.

[Mathieu Trudel-Lapierre (cyphermox)]

Triaged; we need to fix this in high priority; usage of virtio is common.

[Mathieu Trudel-Lapierre (cyphermox)]

It looks to me like probert is doing the right thing, so some form of extra filtering directly in subiquity might be causing virtio drives to be ignored.

[Michael Hudson-Doyle (mwhudson)]

subquity does this:

        storage = self.prober.get_storage()
        VALID_MAJORS = ['8', '253']
        for path, data in storage.items():
            if data['DEVTYPE'] == 'disk' and data['MAJOR'] in VALID_MAJORS:

I guess that's the filtering that is excluding the virtio disks.

[Ryan Harper (raharper)]

It appears that virtio-blk uses dynamic major numbers:

https://lkml.org/lkml/2016/3/2/1035

That suggests that to support virtio-blk, it'll need some thing else to check out of probert output.

[Michael Hudson-Doyle (mwhudson)]

https://github.com/CanonicalLtd/subiquity/pull/251

[Steve Langasek (vorlon)]

resolved in latest 17.10 builds.