add multi-host support in the phosphor-post-code-manager

[Vijay Khemka]

I would also prefer single process design but as Patrick mentioned about hot pluggable 
Host, either we can predefine maximum allowed host per platform or go for multi
process  approach for complete dynamic pluggable host.

We really need to assess what is the disadvantage in predefining maximum number of hosts
With single process because there will be limited slots available per platform.

On 7/21/20, 10:12 AM, "openbmc on behalf of Ren, Zhikui" <openbmc-bounces+vijaykhemka=fb.com at lists.ozlabs.org on behalf of zhikui.ren at intel.com> wrote:

    I would think that one process to handle all post-code is a cleaner design. 

    -----Original Message-----
    From: openbmc <openbmc-bounces+zhikui.ren=intel.com at lists.ozlabs.org> On Behalf Of Manikandan
    Sent: Monday, July 20, 2020 9:00 AM
    To: openbmc at lists.ozlabs.org
    Cc: Wang, Kuiying <kuiying.wang at intel.com>; velumanit at hcl.com; manikandan.e at hcl.com
    Subject: add multi-host support in the phosphor-post-code-manager

    Hi All,

     We woukld like to get opion on below multi-host support approaches.

    Background :
    ------------
      The Phosphor-post-code-manager supports only host to store/retrieve the host postcode history.

    Approaches:
    -----------
    Approach 1: << run the multiple process >>

    Create and run the multiple phosphor-post-code-manager process to handle each host postcode history.

       xyz.openbmc_project.State.Host0.Boot.PostCode
       xyz.openbmc_project.State.Host1.Boot.PostCode
       xyz.openbmc_project.State.Host2.Boot.PostCode
       xyz.openbmc_project.State.Host3.Boot.PostCode

    Approach 2: << pass number of host to single process >>

    Pass number of host to single process phosphor-post-code-manager to register dbus object and handle each host postcode.

       xyz.openbmc_project.State.Host0.Boot.PostCode
       xyz.openbmc_project.State.Host1.Boot.PostCode
       xyz.openbmc_project.State.Host2.Boot.PostCode
       xyz.openbmc_project.State.Host3.Boot.PostCode


    Thanks
    Mani.E