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

[Eitan Zahavi]

The data in the old MCG struct is used for the actual delete. 
> -----Original Message-----
> From: Sasha Khapyorsky [mailto:sashak at voltaire.com] 
> Sent: ד 09 יולי 2008 07:14
> To: Eitan Zahavi
> Cc: Hal Rosenstock; general at lists.openfabrics.org
> Subject: Re: [ofa-general] Re: [PATCH] 
> opensm/osm_mcast_mgr.c: Only sendMCGdelete notice if not 
> previously done
> 
> 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
>