[ofa-general] Re: [PATCH] opensm/osm_mcast_mgr.c: Only sendMCG delete notice if not previously done

[Sasha Khapyorsky]

Hi Eitan,

On 16:44 Wed 02 Jul     , Eitan Zahavi wrote:
> 
> Once a MCG group is deleted by the last member leaving the group (immediately) it 
> is required to still exist until the routing engine deletes its routing.

Why MCG is required to still exist? MFT entries will be there until the
routing engine rebuilds this (same is true for unicast). I cannot see
any reason to keep deleted MCG.

> We mark the group with "to be deleted" flag so we know it will be deleted soon.

Correct and all "to be deleted" groups are ignored in all OpenSM
operations. That was my original question - why we need to keep those
"to be deleted" groups?

Sasha