[Bug 1777131] Re: Wrong RAM size shown for server

[Andres Rodriguez]

Alexander,

>From the looks of the lshw it seems that it reports 12 dimms of ~34GB
each. This means that the RAM size is being reported incorrectly by LSHW
and, as such, MAAS reflects that information. As such, I'll mark this
invalid for MAAS, and open a task for lshw.

That said, i noticed you are using 2.3.3, and I'm guessing you are using
Xenial for commissioning. Could you please switch to bionic for
commissioning and see if the issue persists? A newer version of lshw is
in Bionic which may have already fixed this issue.

** Changed in: maas
       Status: Incomplete => Invalid

** Also affects: lshw (Ubuntu)
   Importance: Undecided
       Status: New

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Title:
  Wrong RAM size shown for server

Status in MAAS:
  Invalid
Status in lshw package in Ubuntu:
  Confirmed

Bug description:
  Currently MAAS relies on DMI for the info about RAM size.
  DMI seems not to be always correct, this results in wrong RAM amount shown in the MAAS UI.

  In my case :

  ......
  handle: DMI:0017
              - lshw:description:
                DIMM Synchronous 2666 MHz (0.4 ns)
              - lshw:product:
                M386A8K40BM2-CTD
              - lshw:vendor:
                Samsung
              - lshw:physid:
                0
              - lshw:serial:
                375610DE
              - lshw:slot:
                P1-DIMMA1
              - lshw:size:
                units: bytes
                34358689792
  ......

  full machine yaml : https://pastebin.canonical.com/p/TqpvzXj2sx/

  However product M386A8K40BM2-CTD is actually 64GB:
  https://memory.net/product/m386a8k40bm2-ctd-samsung-1x-64gb-ddr4-2666-lrdimm-pc4-21300v-l-quad-rank-x4-module/

  I have 12 of those, and on boot it shows me the correct amount 12 *
  64GB:

  ubuntu:~$ dmesg | grep Memory
  [    0.000000] Memory: 791161372K/803909324K available (8541K kernel code, 1313K rwdata, 4000K rodata, 1512K init, 1316K bss, 12747952K reserved, 0K cma-reserved)

  ubuntu:~$ free -m
                total        used        free      shared  buff/cache   available
  Mem:         772658        3828      768156          18         672      766751
  Swap:          8191           0        8191

  ----------------------------------------------------------------

  /var/log/maas : https://private-
  fileshare.canonical.com/~dima/varlogmaas-15062018.tar

  ubuntu$  dpkg -l '*maas*'|cat
  Desired=Unknown/Install/Remove/Purge/Hold
  | Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
  |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
  ||/ Name                            Version                              Architecture Description
  +++-===============================-====================================-============-=============================================
  un  maas                            <none>                               <none>       (no description available)
  ii  maas-cli                        2.3.3-6498-ge4db91d-0ubuntu1~16.04.1 all          MAAS client and command-line interface
  un  maas-cluster-controller         <none>                               <none>       (no description available)
  ii  maas-common                     2.3.3-6498-ge4db91d-0ubuntu1~16.04.1 all          MAAS server common files
  ii  maas-dhcp                       2.3.3-6498-ge4db91d-0ubuntu1~16.04.1 all          MAAS DHCP server
  ii  maas-dns                        2.3.3-6498-ge4db91d-0ubuntu1~16.04.1 all          MAAS DNS server
  ii  maas-proxy                      2.3.3-6498-ge4db91d-0ubuntu1~16.04.1 all          MAAS Caching Proxy
  ii  maas-rack-controller            2.3.3-6498-ge4db91d-0ubuntu1~16.04.1 all          Rack Controller for MAAS
  ii  maas-region-api                 2.3.3-6498-ge4db91d-0ubuntu1~16.04.1 all          Region controller API service for MAAS
  ii  maas-region-controller          2.3.3-6498-ge4db91d-0ubuntu1~16.04.1 all          Region Controller for MAAS
  un  maas-region-controller-min      <none>                               <none>       (no description available)
  un  python-django-maas              <none>                               <none>       (no description available)
  un  python-maas-client              <none>                               <none>       (no description available)
  un  python-maas-provisioningserver  <none>                               <none>       (no description available)
  ii  python3-django-maas             2.3.3-6498-ge4db91d-0ubuntu1~16.04.1 all          MAAS server Django web framework (Python 3)
  ii  python3-maas-client             2.3.3-6498-ge4db91d-0ubuntu1~16.04.1 all          MAAS python API client (Python 3)
  ii  python3-maas-provisioningserver 2.3.3-6498-ge4db91d-0ubuntu1~16.04.1 all          MAAS server provisioning libraries (Python 3)

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