This appears to be a regression in the HPSA driver. In the 4.13 kernel, the following hpsa output is seen:
https://paste.ubuntu.com/p/Bq9ktJWtBm/
And the HW RAID volume ends up as /dev/sda. In 4.15, the HW RAID is not found and one of the SSD volumes ends up as /dev/sda/
This appears to be a regression in the HPSA driver. In the 4.13 kernel, the following hpsa output is seen:
https:/ /paste. ubuntu. com/p/Bq9ktJWtB m/
And the HW RAID volume ends up as /dev/sda. In 4.15, the HW RAID is not found and one of the SSD volumes ends up as /dev/sda/