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

Tue Sep 30 08:07:33 PDT 2014

IMO you should try out strace to see if anything is noticed.
"Write failed: Broken pipe" is quite common message and difficult to
conclude anything with.

Regards
parinay

On Tue, Sep 30, 2014 at 8:16 PM, aayush agrawal <
aayush.agrawal at calsoftinc.com> wrote:

>  Hi Parinay,
>
> Yes, I see ib0 in output of ifconfig -a.
> I also tried with options lnet networks=*o2ib0*(ib0) but no luck.
> While loading lnet I do see error in var/log/messages:
>
> kernel: LNet: HW CPU cores: 32, npartitions: 4
> alg: No test for crc32 (crc32-table)
> kernel: alg: No test for adler32 (adler32-zlib)
> kernel: alg: No test for crc32 (crc32-pclmul)
> kernel: padlock: VIA PadLock Hash Engine not detected.
> modprobe: FATAL: Error inserting padlock_sha
> (/lib/modules/2.6.32_358/kernel/drivers/crypto/padlock-sha.ko): No such
> device
>
> But as per below link this should not be a problem?
> https://jira.hpdd.intel.com/browse/LU-1599
>
> modprobe lnet completes successfully and I see "Write failed: Broken pipe"
> after running "lctl network up" and after this session gets logout from the
> server.
>
> Thanks,
> Aayush.
>
>
> On 9/30/2014 7:21 PM, Parinay Kondekar wrote:
>
>  - 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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>>
>
>
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