[Lustre-discuss] [HPDD-discuss] lustre lnet infiniband config

Tue Sep 30 06:51:14 PDT 2014

- what is the output of 'ifconfig -a' , do you see ib0  there ? mentioning
'options lnet networks=*o2ib0*(ib0)' should be enough.
- anything in syslog ?

HTH

On Tue, Sep 30, 2014 at 6:03 PM, aayush agrawal <
aayush.agrawal at calsoftinc.com> wrote:

>  Hi,
>
> I am trying to build lustre 2.5.0 against
> MLNX_OFED_LINUX-2.2-1.0.1-rhel6.4-x86_64 on CentOS6.4 with kernel version
> 2.6.32-358.
> But I am not able to set lnet config settings properly. I used settings
> suggested in lustre 2.x manual. But then not able to get network up using
> lctl.
>
> Details:
>
> I have two server machines, one for mgs+mdt and second for oss and one
> client machine. I want to setup Infiniband on all these machines.
> I could run below steps successfully for all the three machines:
> 1. Run script mlnxofedinstall
>     # ./mlnxofedinstall  -vvv --add-kernel-support --without-32bit
> --without-fw-update --hpc
> 2. Restart openibd service
>     #  /etc/init.d/openibd restart
> 3. configure ib0 interface.
> 4. configure lustre with o2ib
>     # ./configure --with-linux=Path_to_linux-2.6.32-358.18.1.el6
> --with-o2ib=/usr/src/ofa_kernel/default/
>
> 5. make lustre rpms:
>     # make rpms
> This gave me below compilation error
> I looked online for this error and found bug registered on the same:
> https://jira.hpdd.intel.com/browse/LU-4266
> <https://urldefense.proofpoint.com/v2/url?u=https-3A__jira.hpdd.intel.com_browse_LU-2D4266&d=AAMCAw&c=IGDlg0lD0b-nebmJJ0Kp8A&r=c-1Cg_VH2lcYI_JXS3gypPA6xWmYsO2Md6-EoqjeIzk&m=q_uNuYFdGrDiFyB8x0KjRuPV4TbYGJf20PKQKambrfE&s=Gu0enSN8vm3fdyqEtx0cJjPMhWf9o_TCXmJhHez9HKE&e=>
> Below patch from above link solved the problem and hence I could build
> lustre rpms:
> http://review.whamcloud.com/#/c/8451/1
> <https://urldefense.proofpoint.com/v2/url?u=http-3A__review.whamcloud.com_-23_c_8451_1&d=AAMCAw&c=IGDlg0lD0b-nebmJJ0Kp8A&r=c-1Cg_VH2lcYI_JXS3gypPA6xWmYsO2Md6-EoqjeIzk&m=q_uNuYFdGrDiFyB8x0KjRuPV4TbYGJf20PKQKambrfE&s=BqWJdkdWSRVMHWQkLWAhYaV0yfRwJZDUb61TfAgRss0&e=>
>
> Now first I want to do the Infiniband setup for mgs and mdt on single
> machine which also has Ethernet IP. Then I want to format and mount mgs and
> mdt.
> So I installed above created lustre rpms and then added below line in
> /etc/modprobe.d/lustre.conf
> options lnet networks=o2ib(ib0)
>
> Then I rebooted the machine to remove all lustre related modules including
> lnet and then ran modprobe lnet command to add above parameters and the
> ran lctl network up which is giving me below error:
> LNET configure error 100: Network is down
>
> I looked online and found below discussion on same error:
> http://lists.lustre.org/pipermail/lustre-discuss/2010-June/013510.html
> <https://urldefense.proofpoint.com/v2/url?u=http-3A__lists.lustre.org_pipermail_lustre-2Ddiscuss_2010-2DJune_013510.html&d=AAMCAw&c=IGDlg0lD0b-nebmJJ0Kp8A&r=c-1Cg_VH2lcYI_JXS3gypPA6xWmYsO2Md6-EoqjeIzk&m=q_uNuYFdGrDiFyB8x0KjRuPV4TbYGJf20PKQKambrfE&s=aCgXfqCUyJ7IXVRJHjqpk2HCS1_dsKDuaKJrDPmWp4I&e=>
>
> As per suggestion in above mail I tried with below line in
> /etc/modprobe.d/lustre.conf.  In below command for IB_IP, I have given
> infiniband IP.
> options lnet *networks=o2ib(ib0)* routes="tcp0 IB_IP at o2ib"
> This command hangs for around 2 to 3 minutes and then gives error: Write
> failed: Broken pipe. Same is the case for "options lnet
> *networks=o2ib(ib0)*"
> But if I set: options lnet *networks=tcp0(eth0),o2ib(ib0)* routes="tcp1
> IB_IP at o2ib" then it gives LNET configure error 100: Network is down.
>
> It seems that for network=o2ib(ibo) I am getting error Write failed:
> Broken pipe.
> Am I missing anything while following above steps? Or how do I resolve
> above error?
>
> Thanks,
> Aayush.
>
> <html>
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