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== Comment: #1 - Application Cdeadmin
BMC/PNOR:
=========
Firmware Revision : 00.37 IP address : 009.003.020.216
Firmware Build Time : 20171201 BMC MAC address : 0c:c4:7a:f4:4d:60
PNOR Build Time : 20180117
CPLD Version : B2.91.00
Ubuntu 18.04:
=========
root@bos1u1p1:~# uname -a
Linux bos1u1p1 4.15.0-041500rc9-generic #201801212130 SMP Mon Jan 22 03:36:42
UTC 2018 ppc64le ppc64le ppc64le GNU/Linux
root@bos1u1p1:~# ls -l /dev/disk/by-path
total 0
lrwxrwxrwx 1 root root 9 Jan 25 10:19 pci-0003:01:00.0-scsi-0:2:0:0 ->
../../sda
lrwxrwxrwx 1 root root 10 Jan 25 10:19 pci-0003:01:00.0-scsi-0:2:0:0-part1 ->
../../sda1
lrwxrwxrwx 1 root root 10 Jan 25 10:19 pci-0003:01:00.0-scsi-0:2:0:0-part2 ->
../../sda2
lrwxrwxrwx 1 root root 9 Jan 25 10:19 pci-0003:01:00.0-scsi-0:2:1:0 ->
../../sdb
lrwxrwxrwx 1 root root 9 Jan 25 10:19 pci-0003:01:00.0-scsi-0:2:2:0 ->
../../sdc
lrwxrwxrwx 1 root root 9 Jan 25 10:20
pci-0031:01:00.0-fc-0x500507680b218452-lun-0 -> ../../sdd
lrwxrwxrwx 1 root root 9 Jan 25 10:20
pci-0031:01:00.0-fc-0x500507680b218452-lun-1 -> ../../sde
lrwxrwxrwx 1 root root 9 Jan 25 10:20
pci-0031:01:00.0-fc-0x500507680b218452-lun-2 -> ../../sdf
lrwxrwxrwx 1 root root 9 Jan 25 10:20
pci-0031:01:00.0-fc-0x500507680b218452-lun-3 -> ../../sdg
lrwxrwxrwx 1 root root 9 Jan 25 10:20
pci-0031:01:00.0-fc-0x500507680b218453-lun-0 -> ../../sdh
lrwxrwxrwx 1 root root 9 Jan 25 10:20
pci-0031:01:00.0-fc-0x500507680b218453-lun-1 -> ../../sdi
lrwxrwxrwx 1 root root 9 Jan 25 10:20
pci-0031:01:00.0-fc-0x500507680b218453-lun-2 -> ../../sdj
lrwxrwxrwx 1 root root 9 Jan 25 10:20
pci-0031:01:00.0-fc-0x500507680b218453-lun-3 -> ../../sdk
lrwxrwxrwx 1 root root 9 Jan 25 10:20
pci-0031:01:00.1-fc-0x500507680b218452-lun-0 -> ../../sdl
lrwxrwxrwx 1 root root 9 Jan 25 10:20
pci-0031:01:00.1-fc-0x500507680b218452-lun-1 -> ../../sdm
lrwxrwxrwx 1 root root 9 Jan 25 10:20
pci-0031:01:00.1-fc-0x500507680b218452-lun-2 -> ../../sdn
lrwxrwxrwx 1 root root 9 Jan 25 10:20
pci-0031:01:00.1-fc-0x500507680b218452-lun-3 -> ../../sdo
lrwxrwxrwx 1 root root 9 Jan 25 10:20
pci-0031:01:00.1-fc-0x500507680b218453-lun-0 -> ../../sdp
lrwxrwxrwx 1 root root 9 Jan 25 10:20
pci-0031:01:00.1-fc-0x500507680b218453-lun-1 -> ../../sdq
lrwxrwxrwx 1 root root 9 Jan 25 10:20
pci-0031:01:00.1-fc-0x500507680b218453-lun-2 -> ../../sdr
lrwxrwxrwx 1 root root 9 Jan 25 10:20
pci-0031:01:00.1-fc-0x500507680b218453-lun-3 -> ../../sds
root@bos1u1p1:~#
Problem Description:
=============
- I setup my Boston LC system to run with Ubuntu 18.04
- I tried to test out Samsung PM1725a NVMe 1.6TB and .8 TB disk drives
on Boston LC system.
- The disk drive plugged good into the system. However, after boot the
system did not see the disk.
- I tried with both Samsung PM1725a NVMe 1.6TB and with .8TB disk drives
and none of them show up.
- This disk type plan to supporte in Boston LC system so if the system
does not recognize it then it is an issue.
- I checked with Joe W. my team lead and he told me to open github issue
for further investigation.
root@bos1u1p1:~# ls -l /dev/disk/by-path
total 0
lrwxrwxrwx 1 root root 9 Jan 25 10:19 pci-0003:01:00.0-scsi-0:2:0:0 ->
../../sda
lrwxrwxrwx 1 root root 10 Jan 25 10:19 pci-0003:01:00.0-scsi-0:2:0:0-part1 ->
../../sda1
lrwxrwxrwx 1 root root 10 Jan 25 10:19 pci-0003:01:00.0-scsi-0:2:0:0-part2 ->
../../sda2
lrwxrwxrwx 1 root root 9 Jan 25 10:19 pci-0003:01:00.0-scsi-0:2:1:0 ->
../../sdb
lrwxrwxrwx 1 root root 9 Jan 25 10:19 pci-0003:01:00.0-scsi-0:2:2:0 ->
../../sdc
- If the disk is recognized then it will be
pci-0003:01:00.0-scsi-0:2:3:0 -> ../../sdd but it's not.
== Comment: #2 - Application Cdeadmin
------- Comment From dacng 2018-01-25 11:13:00 EDT -------
You need to install NMVE HBA in your machine
== Comment: #3 - Application Cdeadmin
------- Comment From nguyenp1 2018-01-26 15:35:40 EDT -------
- I have NVME HBA adapter installed in the system and 2 Samsung PM1725a NVMe
1.6TB and .8 TB disk drives in the system. The adapter and nvme drives show
correctly.
- However, the "ls -l /dev/disk/by-path" command did not show any nvme drives.
So it's new issue with
Ubuntu 18.04. Without the PCI path the nvme disks can not be assigned to KVM
guest.
root@bos1u1p1:/dev/disk/by-path# ls -l /dev/disk/by-path
total 0
lrwxrwxrwx 1 root root 9 Jan 26 15:19 pci-0003:01:00.0-scsi-0:2:0:0 ->
../../sda
lrwxrwxrwx 1 root root 10 Jan 26 15:19 pci-0003:01:00.0-scsi-0:2:0:0-part1 ->
../../sda1
lrwxrwxrwx 1 root root 10 Jan 26 15:19 pci-0003:01:00.0-scsi-0:2:0:0-part2 ->
../../sda2
Nvme HBA adapter:
0031:08:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd NVMe
SSD Controller 172Xa (rev 01)
0031:09:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd NVMe
SSD Controller 172Xa (rev
2 NVMe disks in the system.
root@bos1u1p1:/dev/disk/by-path# nvme list
Node SN Model
Namespace Usage Format FW Rev
---------------- -------------------- ----------------------------------------
--------- -------------------------- ---------------- --------
/dev/nvme0n1 S3HCNX0J700289 SAMSUNG MZWLL800HEHP-00003
1 800.17 GB / 800.17 GB 512 B + 0 B GPNA4B3Q
/dev/nvme1n1 S3HDNX0J800067 SAMSUNG MZWLL1T6HEHP-00003
1 1.60 TB / 1.60 TB 512 B + 0 B GPNA5B3Q
== Comment: #4 - Application Cdeadmin <cdead...@us.ibm.com> - 2018-01-26
15:50:35 ==
------- Comment From nguyenp1 2018-01-26 15:41:17 EDT -------
I checked with Dac Nguyen and he told me his system also has this problem. The
"ls -l /dev/disk/by-path" does not display any NVME drives. Without the PCI
path the nvme disks can not be assigned to KVM guest. So this problem need to
be further investigate.
- I'm gathering sosreport and attach it to the bugzilla.
== Comment: #5 - Paul Nguyen
Attached sosreport in bugzilla for Linux team to look at the problem.
** Affects: linux (Ubuntu)
Importance: Undecided
Assignee: Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage)
Status: New
** Tags: architecture-ppc64le bugnameltc-163975 severity-medium
targetmilestone-inin1804
--
Boston-LC:bos009:Ubuntu18.04: No /dev/disk/by-path link created for Samsung
PM1725a NVMe 1.6TB and .8 TB disk drives
https://bugs.launchpad.net/bugs/1746416
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