[ofa-general] GPFS node loses IB-connection
SEGERS Koen
Koen.SEGERS at VRT.BE
Tue May 29 03:03:27 PDT 2007
Hi,
Saturday we did a different stresstest.
This is what we see in the /var/log/messages:
May 25 10:41:19 gpfswhbe2s1 kernel: SDP: FIXME MID 11
There were errors from that time on. Can someone explain me what this
message does?
Koen
-----Oorspronkelijk bericht-----
Van: Scott Weitzenkamp (sweitzen) [mailto:sweitzen at cisco.com]
Verzonden: woensdag 23 mei 2007 17:41
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]
> 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]
> 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]
> > 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]
> > 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]
> > > > 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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