Due to parallel probing of the linux kernel `/dev/sd*` can't be used to
reliably address a hard disk. This can be seen by the many spurious
failures of the dracut CI, where `mdadm` failed with error 524 or tests
failed due to the success marker message written to the wrong disk.
* don't rely on `/dev/sd*` but use disk ids and `/dev/disk/by-id/ata-disk_<name>`
* specify the exact qemu machine architecture `-M q35` needed for the
disk ids. A later patch will move this to `run-qemu`, when all tests are converted
* due to `-M q35` the interface names have changed from
`ens2` -> `enp0s1` and `ens3` -> `enp0s2`
This finally allows running the test suite completely in a rootless container:
```
❯ podman run \
--user 0 \
-v /dev:/dev \
-v ./:/dracut \
-it \
quay.io/haraldh/dracut-fedora:33 \
bash -c 'cd /dracut; make DRACUT_NO_XATTR=1 check'
```
The network interfaces appear asynchronously and sometimes just too late,
after we're already halfway throught server-init.sh:
+ ip link set dev eth0 name ens3
Cannot find device "eth0"
+ ip addr add 192.168.50.1/24 dev ens3
Cannot find device "ens3"
+ dhcpd -cf /etc/dhcpd.conf -lf /var/lib/dhcpd/dhcpd.leases ens3 ens5
...
[ 8.040825] e1000 0000:00:03.0 eth0: (PCI:33MHz:32-bit) 52:54:01:12:34:56
[ 8.047105] e1000 0000:00:03.0 eth0: Intel(R) PRO/1000 Network Connection
...
No subnet declaration for ens3 (no IPv4 addresses).
** Ignoring requests on ens3. If this is not what
you want, please write a subnet declaration
in your dhcpd.conf file for the network segment
to which interface ens3 is attached. **
Whoopsie. Let's ensure all the interfaces are there before we proceed
fiddling around with them.
Harald Hoyer