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  1. Lustre
  2. LU-14064 socklnd needs several improvements detailed in the description
  3. LU-13641

socklnd: remove use_tcp_bonding option in favor of LNet Multi-Rail

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Details

    • Technical task
    • Status: Resolved
    • Minor
    • Resolution: Fixed
    • Lustre 2.14.0, Lustre 2.12.4, Lustre 2.15.0
    • Lustre 2.15.0
    • 9223372036854775807

    Description

      TCP bonding in socklnd over-complicates the code and there is no evidence it's being used anywhere. With LNet Multi-Rail, the use_tcp_bonding option has become obsolete. Add a deprecation message for earlier releases. Remove it in the 2.15 release.

      Multi-Rail feature doesn't need to be explicitly enabled. To use MR instead of the use_tcp_bonding configuration option, group the interfaces on the same network using the lnetctl utility:

      lnetctl net add --net tcp --if eth0,eth1
      

      or via the /etc/modprobe.d/lnet.conf or /etc/modprobe.d/lustre.conf configuration file:

      options lnet networks="tcp(eth0,eth1)"
      

      and make sure dynamic discovery is enabled:

      lnetctl set discovery 1
      

      MR will aggregate the throughput of all available networks/interfaces shared between peer nodes.

      See LNet Software Multi-Rail Configuration in the Lustre Operations Manual for more details.

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            ssmirnov Serguei Smirnov
            ashehata Amir Shehata
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              Created:
              Updated:
              Resolved: