[ofa-general] ofed 1.3.2 opensmd failover

[PN]

HI,

I can think of a situation in which all servers have dual port IB cards and
need failover of OpenSM to achieve HA.
As I know, OpenSM can only bind to 1 port at a time, so do I need to start 2
OpenSM in server A and 2 OpenSM in server B? Will they use the same guid2lid
file? Do I need to set something in the config file or they will
automatically communcate each other?
Do I need to run sldd.sh manually or it will automatically sync with other
OpenSM?

Thanks a lot.

Regards,
PN




2009/8/26 Hal Rosenstock <hal.rosenstock at gmail.com>

>
>
> On 8/25/09, kovlensky at interia.pl <kovlensky at interia.pl> wrote:
>>
>> Hi all,
>>
>> Quick question - is there a need to run anything except opensmd deamons to
>> provide failover capability on ib network in ofed 1.3?
>
>
> In terms of SM failover, modulo bugs fixed relative to this feature since
> OFED 1.3 (there are a couple of things here which may affect your
> environment if I recall correctly), you only need to run more than 1 SM for
> this (one will become master, the other standby).
>
>  I'm aware that when master manager dies standby one comes in and manages
>> the network, but that does not necessary means that lids are preserved,
>> especially for nodes joining in. I used to run sldd.sh for distributing lids
>> list on ofed 1.2.5, but while this script seems to be in place noone
>> mentions necessity for it.
>
>
> So subnet manager failover is provided by running standby opensm.
>
>
> And how LID preservation is provided?
>
>
> If you want LIDs to be preserved, the guid2lid file needs to be sync'd
> (copied from the master SM once it's fully assembled to the node which is
> running the standby SM). That's what the sldd.sh script does.
>
> -- Hal
>
> Regards,
>>
>> Zdenek Kovlensky
>>
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-- 
Best Regards,
PN Lai
HPC Specialist
Galactic Computng Corp.
Tel: 86-755-26733939 ext 826
Mobile: 86-13823161729
Fax: 86-755-26733780
URL: http://www.galactic.com.hk
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