2009/8/26 Hal Rosenstock <[email protected]> > > > On 8/25/09, PN <[email protected]> wrote: >> >> 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, > > > Yes. > > so do I need to start 2 OpenSM in server A and 2 OpenSM in server B? > > > That would be one valid configuration. I'm assuming all ports are connected > to same subnet. >
In some cases, I will use IB bonding. While in another cases, I may use 1 port for calculation and another port to connect the storage. I'm not sure which configuration will provide better performance. > Will they use the same guid2lid file? > > > Depends how the OpenSM configuration is done. > > Do I need to set something in the config file or they will automatically >> communcate each other? > > > What communication are you referring to ? The all need to share the same > subnet prefix. > I mean the handover mechanism. I remember in the previous OpenSM config file (in OFED 1.2.x/1.3.x), there is a field about all the subnet manager in the subnet, but this field is omitted in the new version. I wonder whether all the OpenSM will automatically discover each other and do the handover mechanism right. Thanks. PN > > > >> Do I need to run sldd.sh manually or it will automatically sync with other >> OpenSM? > > > You can either manually copy the guid2lid file around to the appropriate > places. I'm not that familiar with sldd.sh but I think it can either be run > manually or made to run automatically but I'm not familiar with the details. > > -- Hal > > > Thanks a lot. >> >> Regards, >> PN >> >> >> >> >> 2009/8/26 Hal Rosenstock <[email protected]> >> >>> >>> >>> On 8/25/09, [email protected] <[email protected]> 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 >>>> >>>> ---------------------------------------------------------------------- >>>> Kup wlasne mieszkanie za 33 tys. zl! >>>> Sprawdz >>> http://link.interia.pl/f22f2 >>>> >>>> _______________________________________________ >>>> general mailing list >>>> [email protected] >>>> http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general >>>> >>>> To unsubscribe, please visit >>>> http://openib.org/mailman/listinfo/openib-general >>>> >>> >>> >>> _______________________________________________ >>> general mailing list >>> [email protected] >>> http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general >>> >>> To unsubscribe, please visit >>> http://openib.org/mailman/listinfo/openib-general >>> >> >> >> >> -- >> 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 >> > > -- 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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