[ofa-general] GPFS node loses IB-connection
Hal Rosenstock
halr at voltaire.com
Wed May 23 07:11:38 PDT 2007
On Wed, 2007-05-23 at 09:51, Scott Weitzenkamp (sweitzen) wrote:
> No C code changes, just a few config file changes (RENICE_IB_MAD=yes in
> openib.conf,
Does the host really not respond to MAD requests for over 10 seconds in
some cases ?
-- Hal
> memlock in /etc/security/limits.conf, fix /etc/hosts on
> SLES10 for bug 267, etc.).
>
> Scott Weitzenkamp
> SQA and Release Manager
> Server Virtualization Business Unit
> Cisco Systems
>
>
> > -----Original Message-----
> > From: SEGERS Koen [mailto:Koen.SEGERS at VRT.BE]
> > Sent: Wednesday, May 23, 2007 6:48 AM
> > To: Scott Weitzenkamp (sweitzen); Clive Hall (clivhall)
> > Cc: Shirley Ma; Ami Perlmutter;
> > general at lists.openfabrics.org; general-bounces at lists.openfabrics.org
> > Subject: RE: [ofa-general] GPFS node loses IB-connection
> >
> > This far, all tests seem to work.
> >
> > Thanks for the help!
> >
> > Scott,
> > Are there more bugfixes that cisco does in its rpms?
> >
> > Greetz
> >
> > Koen
> >
> > -----Oorspronkelijk bericht-----
> > Van: Scott Weitzenkamp (sweitzen) [mailto:sweitzen at cisco.com]
> > Verzonden: woensdag 23 mei 2007 0:39
> > Aan: SEGERS Koen; Scott Weitzenkamp (sweitzen); Clive Hall (clivhall)
> > CC: Shirley Ma; Ami Perlmutter; general at lists.openfabrics.org;
> > general-bounces at lists.openfabrics.org
> > Onderwerp: RE: [ofa-general] GPFS node loses IB-connection
> >
> > It's not so much pinging every 10 seconds as expecting a
> > response within
> > 10 seconds (Clive, correct me if I'm wrong).
> >
> > You only need to do 1) or 2), not both. Cisco configures 1)
> > in the OFED
> > binary RPMs we release at
> > http://www.cisco.com/cgi-bin/tablebuild.pl/sfs-linux. I
> > prefer to have
> > the host be more responsive.
> >
> >
> > Scott Weitzenkamp
> > SQA and Release Manager
> > Server Virtualization Business Unit
> > Cisco Systems
> >
> >
> > > -----Original Message-----
> > > From: Koen Segers [mailto:koen.segers at VRT.BE]
> > > Sent: Tuesday, May 22, 2007 3:35 PM
> > > To: Scott Weitzenkamp (sweitzen)
> > > Cc: Shirley Ma; Ami Perlmutter;
> > > general at lists.openfabrics.org; general-bounces at lists.openfabrics.org
> > > Subject: RE: [ofa-general] GPFS node loses IB-connection
> > >
> > > If I understand it wright, the switch is actually polling
> > > (=pinging) the
> > > interfaces every 10s. This means that when the interface is handling
> > > other traffic, the poll can fail and the port could be
> > > considered out of
> > > service. My question is then: "How can the timeout be reached while
> > > packets are being sent/received to/from the interface?"
> > >
> > > Anyway, what timeout-value would you recommend for us? And why?
> > >
> > > To recapitulate: these are the actions I'll take tomorrow
> > > 1) change the MAD niceness of the servers
> > > 2) change the timeout on the switches
> > >
> > > Are these changes sufficient for the HCA's to keep their ports in
> > > PORT_ACTIVE state?
> > >
> > > Regards,
> > >
> > > Koen
> > >
> > > On Tue, 2007-05-22 at 12:59 -0700, Scott Weitzenkamp
> > (sweitzen) wrote:
> > > > Yes, you can tune it. Here's an example via the switch CLI:
> > > >
> > > > SFS-7000D(config)# ib sm subnet-prefix fe:80:00:00:00:00:00:00
> > > > node-timeout <value>
> > > >
> > > > The default is 10 seconds, it can be configured up to
> > 2000 seconds.
> > > > If a HCA is completely unresponsive for longer than the
> > node-timeout
> > > > value, then we consider that HCA out of service.
> > > >
> > > > Scott Weitzenkamp
> > > > SQA and Release Manager
> > > > Server Virtualization Business Unit
> > > > Cisco Systems
> > > >
> > > >
> > > >
> > > >
> > > ______________________________________________________________
> > > > From: Shirley Ma [mailto:xma at us.ibm.com]
> > > > Sent: Tuesday, May 22, 2007 11:30 AM
> > > > To: koen.segers at VRT.BE
> > > > Cc: Ami Perlmutter; general at lists.openfabrics.org;
> > > > general-bounces at lists.openfabrics.org; Scott Weitzenkamp
> > > > (sweitzen)
> > > > Subject: RE: [ofa-general] GPFS node loses IB-connection
> > > >
> > > >
> > > >
> > > > Koen,
> > > >
> > > > So it is most likely you hit the same bug as 229 (Scott
> > > > pointed out earlier). The same workaround might
> > work for you
> > > > by renicing ib_mad as Scott suggested.
> > > >
> > > > I think this should be a SM query timeout tunable value in
> > > > Cisco SM. Am I right, Scott?
> > > >
> > > > Thanks
> > > > Shirley Ma
> > > >
> > > >
> > > > Inactive hide details for Koen Segers
> > > <koen.segers at VRT.BE>Koen
> > > > Segers <koen.segers at VRT.BE>
> > > >
> > > >
> > > > Koen Segers
> > > <koen.segers at VRT.BE>
> > > >
> > > > 05/22/07 11:14 AM
> > > > Please respond to
> > > > koen.segers at VRT.BE
> > > >
> > > >
> > > > To
> > > >
> > > > Shirley
> > > > Ma/Beaverton/IBM at IBMUS
> > > >
> > > > cc
> > > >
> > > > Ami Perlmutter
> > > > <amip at dev.mellanox.co.il>,
> > > general at lists.openfabrics.org, general-bounces at lists.openfabrics.org
> > > >
> > > > Subject
> > > >
> > > > RE:
> > > > [ofa-general]
> > > > GPFS node loses
> > > > IB-connection
> > > >
> > > >
> > > >
> > > > Hi,
> > > >
> > > > It is the Cisco SM.
> > > >
> > > > SFS-7000P> show version
> > > >
> > > >
> > > >
> > > ==============================================================
> > > ==================
> > > > System Version Information
> > > >
> > > ==============================================================
> > > ==================
> > > > system-version : SFS-7000P TopspinOS
> > 2.9.0 releng
> > > > #147
> > > > 10/25/2006 02:01:32
> > > > contact : tac at cisco.com
> > > > name : SFS-7000P
> > > > location : 170 West Tasman Drive,
> > > San Jose, CA
> > > > 95134
> > > > up-time : 11(d):7(h):49(m):3(s)
> > > > last-change : none
> > > > last-config-save : none
> > > > action : none
> > > > result : none
> > > > oper-mode : normal
> > > >
> > > > There is also a command that gives the SM version,
> > > but I can't
> > > > find it
> > > > right now.
> > > >
> > > > On Tue, 2007-05-22 at 09:45 -0700, Shirley Ma wrote:
> > > > > Hello Koen,
> > > > >
> > > > > From the switch log, it looks a SM issue to me.
> > > The node was
> > > > kicked
> > > > > out of the membership. Which SM you are using in your
> > > > fabric?
> > > > >
> > > > > Thanks
> > > > > Shirley Ma
> > > > >
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> > > >
> > > >
> > > >
> > > >
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> > > Vlaamse Radio- en Televisieomroep
> > > Auguste Reyerslaan 52, 1043 Brussel
> > >
> > > nv van publiek recht
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> > >
> > >
> > *** Disclaimer ***
> >
> > Vlaamse Radio- en Televisieomroep
> > Auguste Reyerslaan 52, 1043 Brussel
> >
> > nv van publiek recht
> > BTW BE 0244.142.664
> > RPR Brussel
> > http://www.vrt.be/disclaimer
> >
> >
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