[ofa-general] GPFS node loses IB-connection
SEGERS Koen
Koen.SEGERS at VRT.BE
Thu May 24 14:24:27 PDT 2007
We are not using IPoIB. We only use SDP, but IPoIB is compiled just in case we need it (when SDP is not sufficient).
All interfaces are given an IPv4 address, so the messages aren't harmful I guess.
Thanks!
Koen
________________________________
Van: Clive Hall (clivhall) [mailto:clivhall at cisco.com]
Verzonden: do 24/05/2007 22:37
Aan: Shirley Ma; SEGERS Koen
CC: general-bounces at lists.openfabrics.org; general at lists.openfabrics.org
Onderwerp: RE: [ofa-general] GPFS node loses IB-connection
Those particular log messages are just informational messages. They're logged when multicast groups are created (when the first group member joins) and when multicast groups are deleted (when the last group member leaves).
As Shirley said, if you're not using IPv6 anyway then those messages aren't harmful. Even if you are using IPv6 it will quite possibly still be fine, although I don't know why hosts would be leaving/rejoining the multicast groups.
Clive.
________________________________
From: general-bounces at lists.openfabrics.org [mailto:general-bounces at lists.openfabrics.org] On Behalf Of Shirley Ma
Sent: Thursday, May 24, 2007 11:16 AM
To: SEGERS Koen
Cc: general-bounces at lists.openfabrics.org; general at lists.openfabrics.org
Subject: RE: [ofa-general] GPFS node loses IB-connection
Koen,
Are you using IPv6? If not, then this is no harmful. If you don't use it, you can simply disable loading IPv6 module in your notes when rebooting.
Thanks
Shirley Ma
IBM Linux Technology Center
15300 SW Koll Parkway
Beaverton, OR 97006-6063
Phone(Fax): (503) 578-7638
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RE: [ofa-general] GPFS node loses IB-connection
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After changing the switch timeout value, we never got the error again. Yesterday, we started a 24h stresstest. This test was succesfull. I think we can conclude that the problem is fixed now.
But, there is a strange message in de logs of the switch:
Topspin-120sc ib_sm.x[632]: %IB-6-INFO: Generate SM DELETE_MC_GROUP trap for GID=xx
Topspin-120sc ib_sm.x[632]: %IB-6-INFO: Generate SM CREATE_MC_GROUP trap for GID=xx
Topspin-120sc ib_sm.x[632]: %IB-6-INFO: Generate SM DELETE_MC_GROUP trap for GID=xx
Topspin-120sc ib_sm.x[632]: %IB-6-INFO: Generate SM CREATE_MC_GROUP trap for GID=xx
Topspin-120sc ib_sm.x[618]: %IB-6-INFO: Configuration caused by multicast membership change
Topspin-120sc ib_sm.x[618]: %IB-6-INFO: Configuration caused by multicast membership change
Topspin-120sc ib_sm.x[632]: %IB-6-INFO: Generate SM DELETE_MC_GROUP trap for GID=yy
Topspin-120sc ib_sm.x[632]: %IB-6-INFO: Generate SM CREATE_MC_GROUP trap for GID=yy
Topspin-120sc ib_sm.x[632]: %IB-6-INFO: Generate SM DELETE_MC_GROUP trap for GID=yy
Topspin-120sc ib_sm.x[632]: %IB-6-INFO: Generate SM CREATE_MC_GROUP trap for GID=yy
Topspin-120sc ib_sm.x[618]: %IB-6-INFO: Configuration caused by multicast membership change
Topspin-120sc ib_sm.x[618]: %IB-6-INFO: Configuration caused by multicast membership change
With xx,yy = (e.g) ff:12:60:1b:ff:ff:00:00:00:00:00:01:ff:05:87:d9 but changing to different GIDs in the next group of loggings each belonging to the IB ports of the server HCA's.
This logging occurs every few minutes (not at a regular interval). Is there somewhere a Cisco manual available that describes or explains these messages? Or can anyone explain what is happening? And whether this can harm a setup that doesn't use multicast?
Greetz
Koen
________________________________
Van: Scott Weitzenkamp (sweitzen) [mailto:sweitzen at cisco.com]
Verzonden: wo 23/05/2007 17:40
Aan: SEGERS Koen; Hal Rosenstock
CC: Clive Hall (clivhall); general-bounces at lists.openfabrics.org; general at lists.openfabrics.org
Onderwerp: RE: [ofa-general] GPFS node loses IB-connection
Try 20 seconds, I'm curious if if you are barely crossing the 10-second
threshold.
Scott
> -----Original Message-----
> From: SEGERS Koen [mailto:Koen.SEGERS at VRT.BE <mailto:Koen.SEGERS at VRT.BE> ]
> Sent: Wednesday, May 23, 2007 8:39 AM
> To: Scott Weitzenkamp (sweitzen); Hal Rosenstock
> Cc: Clive Hall (clivhall);
> general-bounces at lists.openfabrics.org; general at lists.openfabrics.org
> Subject: RE: [ofa-general] GPFS node loses IB-connection
>
> What value would you recommend then?
>
> Koen
>
> -----Oorspronkelijk bericht-----
> Van: Scott Weitzenkamp (sweitzen) [mailto:sweitzen at cisco.com <mailto:sweitzen at cisco.com> ]
> Verzonden: woensdag 23 mei 2007 17:38
> Aan: SEGERS Koen; Hal Rosenstock
> CC: Clive Hall (clivhall); general-bounces at lists.openfabrics.org;
> general at lists.openfabrics.org
> Onderwerp: RE: [ofa-general] GPFS node loses IB-connection
>
> The boot time of the host doesn't matter for this timeout. While the
> host is booting, the IB link is down anyway.
>
> Scott
>
> > -----Original Message-----
> > From: SEGERS Koen [mailto:Koen.SEGERS at VRT.BE <mailto:Koen.SEGERS at VRT.BE> ]
> > Sent: Wednesday, May 23, 2007 8:20 AM
> > To: Hal Rosenstock; Scott Weitzenkamp (sweitzen)
> > Cc: Clive Hall (clivhall);
> > general-bounces at lists.openfabrics.org; general at lists.openfabrics.org
> > Subject: RE: [ofa-general] GPFS node loses IB-connection
> >
> > After a whole day of stresstesting with the MAD renicing
> turned on, we
> > got the error once. So I think I should raise the timeout on
> > the switch
> > also.
> >
> > It takes about 2 minutes to boot the system. Do you agree
> > that this is a
> > good value for the timeout?
> >
> > Scott,
> > Can you explain me the problem of the memlock?
> >
> > I saw that the SLES10 bug is only an issue in MVAPICH.
> Since we didn't
> > install this, the bug is not related to us. This is
> correct, isn't it?
> >
> > Greetz
> >
> > Koen
> >
> > -----Oorspronkelijk bericht-----
> > Van: Hal Rosenstock [mailto:halr at voltaire.com <mailto:halr at voltaire.com> ]
> > Verzonden: woensdag 23 mei 2007 16:12
> > Aan: Scott "Weitzenkamp (sweitzen)
> > CC: SEGERS Koen; Clive Hall (clivhall);
> > general-bounces at lists.openfabrics.org; general at lists.openfabrics.org
> > Onderwerp: RE: [ofa-general] GPFS node loses IB-connection
> >
> > 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 <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 <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 <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 <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 <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
> > > > > > >
> > > > > > *** Disclaimer ***
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