The problem is in the udev rules in the installer:
/lib/udev/rules.d/63-md-raid-array.rules /lib/udev/rules.d/64-md-raid-assembly.rules
There is a wrong path to mdadm which contains "BINDIR" instead of "/sbin". The same rule files in the installed system are fine.
There is a workaround to the problem:
1. Wait for installer "Configure network" screen.
2. Switch to other console.
sed -i 's/BINDIR/\/sbin/g' /lib/udev/rules.d/*-md-* udevadm control --reload
3. Continue the installation.
The problem is in the udev rules in the installer:
/lib/udev/ rules.d/ 63-md-raid- array.rules rules.d/ 64-md-raid- assembly. rules
/lib/udev/
There is a wrong path to mdadm which contains "BINDIR" instead of "/sbin". The same rule files in the installed system are fine.
There is a workaround to the problem:
1. Wait for installer "Configure network" screen.
2. Switch to other console.
sed -i 's/BINDIR/\/sbin/g' /lib/udev/ rules.d/ *-md-*
udevadm control --reload
3. Continue the installation.