The lab in question appears to be configured as 2+ 2 controller-1 has the following storage configuration apiVersion: starlingx.windriver.com/v1 kind: HostProfile metadata: labels: controller-tools.k8s.io: "1.0" name: controller-1-profile namespace: deployment spec: administrativeState: unlocked bootDevice: /dev/disk/by-path/pci-0000:04:00.0-sas-0x5000c50076366105-lun-0 clockSynchronization: ntp console: ttyS0,115200n8 installOutput: graphical interfaces: ethernet: - class: platform dataNetworks: [] name: oam0 platformNetworks: - oam port: name: enp13s0f0 - class: platform dataNetworks: [] name: mgmt0 platformNetworks: - mgmt - cluster-host port: name: enp13s0f1 personality: controller powerOn: true provisioningMode: static rootDevice: /dev/disk/by-path/pci-0000:04:00.0-sas-0x5000c50076366105-lun-0 storage: filesystems: - name: scratch size: 8 - name: backup size: 25 - name: docker size: 30 - name: kubelet size: 10 osds: - cluster: ceph_cluster function: osd path: /dev/disk/by-path/pci-0000:04:00.0-sas-0x5001e6738bc90001-lun-0 subfunctions: - controller $ system host-disk-list controller-1 +--------------------------------------+-----------+---------+---------+-------+------------+--------------+---------+-----------------------------------------------------------------+ | uuid | device_no | device_ | device_ | size_ | available_ | rpm | serial_ | device_path | | | de | num | type | gib | gib | | id | | +--------------------------------------+-----------+---------+---------+-------+------------+--------------+---------+-----------------------------------------------------------------+ | 33d64f76-b367-4d9c-a7a9-4aca0ccd61ec | /dev/sda | 2048 | HDD | 838. | 0.0 | Undetermined | S0N1RS0 | /dev/disk/by-path/pci-0000:04:00.0-sas-0x5000c50076366105-lun-0 | | | | | | 362 | | | G0000B4 | | | | | | | | | | 44BGA1 | | | | | | | | | | | | | 91f0d50d-30a0-4087-a841-da223e492985 | /dev/sdb | 2064 | SSD | 223. | 0.0 | N/A | CVTR528 | /dev/disk/by-path/pci-0000:04:00.0-sas-0x5001e6738bc90001-lun-0 | | | | | | 57 | | | 101E824 | | | | | | | | | | 0CGN | $ system host-stor-list controller-1 +--------------------------------------+----------+-------+------------+----------------------------| uuid | function | osdid | state | idisk_uuid | journal_path | journal_node | journal_size_gib | tier_name | +--------------------------------------+----------+-------+------------+---------------------------- | c9027940-c8cd-4b9c-a73a-c7d367e6ed50 | osd | 0 | configured | 91f0d50d-30a0-4087-a841-da223e492985 | /dev/disk/by-path/pci-0000:04:00.0-sas-0x5001e6738bc90001-lun-0-part2 | /dev/sdb2 | 1 | storage $ ls -l /dev/disk/by-path/* lrwxrwxrwx 1 root root 9 Dec 3 15:56 /dev/disk/by-path/pci-0000:04:00.0-sas-0x5000c50076366105-lun-0 -> ../../sda lrwxrwxrwx 1 root root 10 Dec 3 15:56 /dev/disk/by-path/pci-0000:04:00.0-sas-0x5000c50076366105-lun-0-part1 -> ../../sda1 lrwxrwxrwx 1 root root 10 Dec 3 15:56 /dev/disk/by-path/pci-0000:04:00.0-sas-0x5000c50076366105-lun-0-part2 -> ../../sda2 lrwxrwxrwx 1 root root 10 Dec 3 15:56 /dev/disk/by-path/pci-0000:04:00.0-sas-0x5000c50076366105-lun-0-part3 -> ../../sda3 lrwxrwxrwx 1 root root 10 Dec 3 15:56 /dev/disk/by-path/pci-0000:04:00.0-sas-0x5000c50076366105-lun-0-part4 -> ../../sda4 lrwxrwxrwx 1 root root 9 Dec 3 15:56 /dev/disk/by-path/pci-0000:04:00.0-sas-0x5001e6738bc90001-lun-0 -> ../../sdb lrwxrwxrwx 1 root root 10 Dec 3 15:56 /dev/disk/by-path/pci-0000:04:00.0-sas-0x5001e6738bc90001-lun-0-part1 -> ../../sdb1 lrwxrwxrwx 1 root root 10 Dec 3 15:56 /dev/disk/by-path/pci-0000:04:00.0-sas-0x5001e6738bc90001-lun-0-part2 -> ../../sdb2 controller-1:~$ udevadm info -q all -n /dev/sda P: /devices/pci0000:00/0000:00:01.1/0000:02:00.0/0000:03:08.0/0000:04:00.0/host0/port-0:0/end_device-0:0/target0:0:0/0:0:0:0/block/sda N: sda S: disk/by-id/scsi-35000c50076366107 S: disk/by-id/wwn-0x5000c50076366107 S: disk/by-path/pci-0000:04:00.0-sas-0x5000c50076366105-lun-0 E: DEVLINKS=/dev/disk/by-id/scsi-35000c50076366107 /dev/disk/by-id/wwn-0x5000c50076366107 /dev/disk/by-path/pci-0000:04:00.0-sas-0x5000c50076366105-lun-0 E: DEVNAME=/dev/sda E: DEVPATH=/devices/pci0000:00/0000:00:01.1/0000:02:00.0/0000:03:08.0/0000:04:00.0/host0/port-0:0/end_device-0:0/target0:0:0/0:0:0:0/block/sda E: DEVTYPE=disk E: ID_BUS=scsi E: ID_MODEL=ST900MM0026 E: ID_MODEL_ENC=ST900MM0026\x20\x20\x20\x20\x20 E: ID_PART_TABLE_TYPE=gpt E: ID_PATH=pci-0000:04:00.0-sas-0x5000c50076366105-lun-0 E: ID_PATH_TAG=pci-0000_04_00_0-sas-0x5000c50076366105-lun-0 E: ID_REVISION=0003 E: ID_SAS_PATH=pci-0000:04:00.0-sas-phy0-lun-0 E: ID_SCSI=1 E: ID_SCSI_SERIAL=S0N1RS0G0000B444BGA1 E: ID_SERIAL=35000c50076366107 E: ID_SERIAL_SHORT=5000c50076366107 E: ID_TYPE=disk E: ID_VENDOR=SEAGATE E: ID_VENDOR_ENC=SEAGATE\x20 E: ID_WWN=0x5000c50076366107 E: ID_WWN_WITH_EXTENSION=0x5000c50076366107 E: MAJOR=8 E: MINOR=0 E: MPATH_SBIN_PATH=/sbin E: SUBSYSTEM=block E: TAGS=:systemd: E: USEC_INITIALIZED=865273 controller-1:~$ udevadm info -q all -n /dev/sdb P: /devices/pci0000:00/0000:00:01.1/0000:02:00.0/0000:03:08.0/0000:04:00.0/host0/port-0:1/end_device-0:1/target0:0:1/0:0:1:0/block/sdb N: sdb S: disk/by-id/ata-INTEL_SSDSC2BW240H6_CVTR528101E8240CGN S: disk/by-id/wwn-0x55cd2e414c8d201a S: disk/by-path/pci-0000:04:00.0-sas-0x5001e6738bc90001-lun-0 E: DEVLINKS=/dev/disk/by-id/ata-INTEL_SSDSC2BW240H6_CVTR528101E8240CGN /dev/disk/by-id/wwn-0x55cd2e414c8d201a /dev/disk/by-path/pci-0000:04:00.0-sas-0x5001e6738bc90001-lun-0 E: DEVNAME=/dev/sdb E: DEVPATH=/devices/pci0000:00/0000:00:01.1/0000:02:00.0/0000:03:08.0/0000:04:00.0/host0/port-0:1/end_device-0:1/target0:0:1/0:0:1:0/block/sdb E: DEVTYPE=disk E: ID_ATA=1 E: ID_ATA_DOWNLOAD_MICROCODE=1 E: ID_ATA_FEATURE_SET_APM=1 E: ID_ATA_FEATURE_SET_APM_CURRENT_VALUE=254 E: ID_ATA_FEATURE_SET_APM_ENABLED=1 E: ID_ATA_FEATURE_SET_HPA=1 E: ID_ATA_FEATURE_SET_HPA_ENABLED=1 E: ID_ATA_FEATURE_SET_PM=1 E: ID_ATA_FEATURE_SET_PM_ENABLED=1 E: ID_ATA_FEATURE_SET_PUIS=1 E: ID_ATA_FEATURE_SET_PUIS_ENABLED=0 E: ID_ATA_FEATURE_SET_SECURITY=1 E: ID_ATA_FEATURE_SET_SECURITY_ENABLED=0 E: ID_ATA_FEATURE_SET_SECURITY_ENHANCED_ERASE_UNIT_MIN=2 E: ID_ATA_FEATURE_SET_SECURITY_ERASE_UNIT_MIN=4 E: ID_ATA_FEATURE_SET_SMART=1 E: ID_ATA_FEATURE_SET_SMART_ENABLED=1 E: ID_ATA_ROTATION_RATE_RPM=0 E: ID_ATA_SATA=1 E: ID_ATA_SATA_SIGNAL_RATE_GEN1=1 E: ID_ATA_SATA_SIGNAL_RATE_GEN2=1 E: ID_ATA_WRITE_CACHE=1 E: ID_ATA_WRITE_CACHE_ENABLED=1 E: ID_BUS=ata E: ID_MODEL=INTEL_SSDSC2BW240H6 E: ID_MODEL_ENC=INTEL\x20SSDSC2BW240H6\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20 E: ID_PART_TABLE_TYPE=gpt E: ID_PATH=pci-0000:04:00.0-sas-0x5001e6738bc90001-lun-0 E: ID_PATH_TAG=pci-0000_04_00_0-sas-0x5001e6738bc90001-lun-0 E: ID_REVISION=RG20 E: ID_SAS_PATH=pci-0000:04:00.0-sas-phy1-lun-0 E: ID_SERIAL=INTEL_SSDSC2BW240H6_CVTR528101E8240CGN E: ID_SERIAL_SHORT=CVTR528101E8240CGN E: ID_TYPE=disk E: ID_WWN=0x55cd2e414c8d201a E: ID_WWN_WITH_EXTENSION=0x55cd2e414c8d201a E: MAJOR=8 E: MINOR=16 E: MPATH_SBIN_PATH=/sbin E: SUBSYSTEM=block E: TAGS=:systemd: E: USEC_INITIALIZED=866651