when using agent based installer to provision OCP, the Validation failed with the following message:
"id": "sufficient-installation-disk-speed"
"status": "failure"
"message": "While preparing the previous installation the installation disk speed measurement failed or was found to be insufficient"

4.13.0
{

  "versions": {

    "assisted-installer": "quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:3a8b33263729ab42c0ff29b9d5e8b767b7b1a9b31240c592fa8d173463fb04d1",

    "assisted-installer-controller": "quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:ce3e2e4aac617077ac98b82d9849659595d85cd31f17b3213da37bc5802b78e1",

    "assisted-installer-service": "Unknown",

    "discovery-agent": "quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:70397ac41dffaa5f3333c00ac0c431eff7debad9177457a038b6e8c77dc4501a"

  }

}

100%

1. Using agent based installer provision the DELL 16G server
2. 
3.

Validation failed with "sufficient-installation-disk-speed"

Validation pass

[root@c2-esx02 bin]# lsblkNAME        MAJ:MIN RM   SIZE RO TYPE MOUNTPOINTSloop0         7:0    0 125.7G  0 loop /var/lib/containers/storage/overlay                                      /var                                      /etc                                      /run/ephemeralloop1         7:1    0   934M  0 loop /usr                                      /boot                                      /                                      /sysrootnvme1n1     259:0    0   1.5T  0 disknvme0n1     259:2    0 894.2G  0 disk├─nvme0n1p1 259:6    0     2M  0 part├─nvme0n1p2 259:7    0    20M  0 part├─nvme0n1p3 259:8    0  93.1G  0 part├─nvme0n1p4 259:9    0 701.9G  0 part└─nvme0n1p5 259:10   0  99.2G  0 partnvme2n1     259:3    0   1.5T  0 disknvme4n1     259:4    0   1.5T  0 disknvme3n1     259:5    0   1.5T  0 disk[root@c2-esx02 bin]# ls -lh /dev |grep nvmecrw-------.   1 root root    239,     0 Jun 12 06:01 nvme0-rw-r--r--.   1 root root          4.0M Jun 12 06:04 nvme0c0n1brw-rw----.   1 root disk    259,     2 Jun 12 06:01 nvme0n1brw-rw----.   1 root disk    259,     6 Jun 12 06:01 nvme0n1p1brw-rw----.   1 root disk    259,     7 Jun 12 06:01 nvme0n1p2brw-rw----.   1 root disk    259,     8 Jun 12 06:01 nvme0n1p3brw-rw----.   1 root disk    259,     9 Jun 12 06:01 nvme0n1p4brw-rw----.   1 root disk    259,    10 Jun 12 06:01 nvme0n1p5crw-------.   1 root root    239,     1 Jun 12 06:01 nvme1brw-rw----.   1 root disk    259,     0 Jun 12 06:01 nvme1n1crw-------.   1 root root    239,     2 Jun 12 06:01 nvme2brw-rw----.   1 root disk    259,     3 Jun 12 06:01 nvme2n1crw-------.   1 root root    239,     3 Jun 12 06:01 nvme3brw-rw----.   1 root disk    259,     5 Jun 12 06:01 nvme3n1crw-------.   1 root root    239,     4 Jun 12 06:01 nvme4brw-rw----.   1 root disk    259,     4 Jun 12 06:01 nvme4n1[root@c2-esx02 bin]# lsblk -f nvme0c0n1lsblk: nvme0c0n1: not a block device[root@c2-esx02 bin]# ls -l /dev/disk/by-id/total 0lrwxrwxrwx. 1 root root 13 Jun 12 06:01 google-CN0WW56VFCP0033900HU -> ../../nvme0n1lrwxrwxrwx. 1 root root 15 Jun 12 06:01 google-CN0WW56VFCP0033900HU-part1 -> ../../nvme0n1p1lrwxrwxrwx. 1 root root 15 Jun 12 06:01 google-CN0WW56VFCP0033900HU-part2 -> ../../nvme0n1p2lrwxrwxrwx. 1 root root 15 Jun 12 06:01 google-CN0WW56VFCP0033900HU-part3 -> ../../nvme0n1p3lrwxrwxrwx. 1 root root 15 Jun 12 06:01 google-CN0WW56VFCP0033900HU-part4 -> ../../nvme0n1p4lrwxrwxrwx. 1 root root 15 Jun 12 06:01 google-CN0WW56VFCP0033900HU-part5 -> ../../nvme0n1p5lrwxrwxrwx. 1 root root 13 Jun 12 06:01 google-PHAB112600291P9SGN -> ../../nvme3n1lrwxrwxrwx. 1 root root 13 Jun 12 06:01 google-PHAB115400P81P9SGN -> ../../nvme2n1lrwxrwxrwx. 1 root root 13 Jun 12 06:01 google-PHAB120401CP1P9SGN -> ../../nvme1n1lrwxrwxrwx. 1 root root 13 Jun 12 06:01 google-PHAB124501MF1P9SGN -> ../../nvme4n1lrwxrwxrwx. 1 root root 13 Jun 12 06:01 nvme-Dell_BOSS-N1_CN0WW56VFCP0033900HU -> ../../nvme0n1lrwxrwxrwx. 1 root root 15 Jun 12 06:01 nvme-Dell_BOSS-N1_CN0WW56VFCP0033900HU-part1 -> ../../nvme0n1p1lrwxrwxrwx. 1 root root 15 Jun 12 06:01 nvme-Dell_BOSS-N1_CN0WW56VFCP0033900HU-part2 -> ../../nvme0n1p2lrwxrwxrwx. 1 root root 15 Jun 12 06:01 nvme-Dell_BOSS-N1_CN0WW56VFCP0033900HU-part3 -> ../../nvme0n1p3lrwxrwxrwx. 1 root root 15 Jun 12 06:01 nvme-Dell_BOSS-N1_CN0WW56VFCP0033900HU-part4 -> ../../nvme0n1p4lrwxrwxrwx. 1 root root 15 Jun 12 06:01 nvme-Dell_BOSS-N1_CN0WW56VFCP0033900HU-part5 -> ../../nvme0n1p5lrwxrwxrwx. 1 root root 13 Jun 12 06:01 nvme-Dell_Ent_NVMe_P5600_MU_U.2_1.6TB_PHAB112600291P9SGN -> ../../nvme3n1lrwxrwxrwx. 1 root root 13 Jun 12 06:01 nvme-Dell_Ent_NVMe_P5600_MU_U.2_1.6TB_PHAB115400P81P9SGN -> ../../nvme2n1lrwxrwxrwx. 1 root root 13 Jun 12 06:01 nvme-Dell_Ent_NVMe_P5600_MU_U.2_1.6TB_PHAB120401CP1P9SGN -> ../../nvme1n1lrwxrwxrwx. 1 root root 13 Jun 12 06:01 nvme-Dell_Ent_NVMe_P5600_MU_U.2_1.6TB_PHAB124501MF1P9SGN -> ../../nvme4n1lrwxrwxrwx. 1 root root 13 Jun 12 06:01 nvme-eui.0050434209000001 -> ../../nvme0n1lrwxrwxrwx. 1 root root 15 Jun 12 06:01 nvme-eui.0050434209000001-part1 -> ../../nvme0n1p1lrwxrwxrwx. 1 root root 15 Jun 12 06:01 nvme-eui.0050434209000001-part2 -> ../../nvme0n1p2lrwxrwxrwx. 1 root root 15 Jun 12 06:01 nvme-eui.0050434209000001-part3 -> ../../nvme0n1p3lrwxrwxrwx. 1 root root 15 Jun 12 06:01 nvme-eui.0050434209000001-part4 -> ../../nvme0n1p4lrwxrwxrwx. 1 root root 15 Jun 12 06:01 nvme-eui.0050434209000001-part5 -> ../../nvme0n1p5lrwxrwxrwx. 1 root root 13 Jun 12 06:01 nvme-eui.01000000000000005cd2e44e7a445351 -> ../../nvme2n1lrwxrwxrwx. 1 root root 13 Jun 12 06:01 nvme-eui.01000000000000005cd2e48f14515351 -> ../../nvme1n1lrwxrwxrwx. 1 root root 13 Jun 12 06:01 nvme-eui.01000000000000005cd2e49d3e605351 -> ../../nvme4n1lrwxrwxrwx. 1 root root 13 Jun 12 06:01 nvme-eui.01000000000000005cd2e4fd973e5351 -> ../../nvme3n1[root@c2-esx02 bin]# ls -l /dev/disk/by-pathtotal 0lrwxrwxrwx. 1 root root 13 Jun 12 06:01 pci-0000:01:00.0-nvme-1 -> ../../nvme0n1lrwxrwxrwx. 1 root root 15 Jun 12 06:01 pci-0000:01:00.0-nvme-1-part1 -> ../../nvme0n1p1lrwxrwxrwx. 1 root root 15 Jun 12 06:01 pci-0000:01:00.0-nvme-1-part2 -> ../../nvme0n1p2lrwxrwxrwx. 1 root root 15 Jun 12 06:01 pci-0000:01:00.0-nvme-1-part3 -> ../../nvme0n1p3lrwxrwxrwx. 1 root root 15 Jun 12 06:01 pci-0000:01:00.0-nvme-1-part4 -> ../../nvme0n1p4lrwxrwxrwx. 1 root root 15 Jun 12 06:01 pci-0000:01:00.0-nvme-1-part5 -> ../../nvme0n1p5lrwxrwxrwx. 1 root root 13 Jun 12 06:01 pci-0000:c3:00.0-nvme-1 -> ../../nvme1n1lrwxrwxrwx. 1 root root 13 Jun 12 06:01 pci-0000:c4:00.0-nvme-1 -> ../../nvme2n1lrwxrwxrwx. 1 root root 13 Jun 12 06:01 pci-0000:c5:00.0-nvme-1 -> ../../nvme3n1lrwxrwxrwx. 1 root root 13 Jun 12 06:01 pci-0000:c6:00.0-nvme-1 -> ../../nvme4n1