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  1. Lustre
  2. LU-6901

LNet: Support dynamic number of NIDs in ping response

Details

    • New Feature
    • Resolution: Fixed
    • Minor
    • None
    • None
    • None
    • 9223372036854775807

    Description

      It is desirable for ping to discover all NIDs on a router if the router has more than 16 NIDs. Current restriction is 16.

      Attachments

        Issue Links

          is related to

          Bug - A problem which impairs or prevents the functions of the product. LU-6130 Number of LNET NI's limited

          • Major - Major loss of function.
          • Open

          Bug - A problem which impairs or prevents the functions of the product. LU-10003 lnetctl error "cannot add network: invalid argument"

          • Major - Major loss of function.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. LU-17700 lnet ping: failed to ping NID: Protocol error

          • Major - Major loss of function.
          • Resolved

          Activity

            [LU-6901] LNet: Support dynamic number of NIDs in ping response
            simmonsja James A Simmons added a comment -

            Yes. In fact the only reason for LNET_PING_BUFFER_MAX is that currently IB RDMA doesn't support IPv6 addresses. Otherwise we could do way more.

            simmonsja James A Simmons added a comment - Yes. In fact the only reason for LNET_PING_BUFFER_MAX is that currently IB RDMA doesn't support IPv6 addresses. Otherwise we could do way more.
            adilger Andreas Dilger added a comment -

            simmonsja, hornc, I thought there was just recently patch https://review.whamcloud.com/54673 "LU-17700 lnet: properly calculate ping buffer size" that was changing the limit of the number of NIDs in a ping reply because of IPv6?

            According to LNET_PING_BUFFER_MAX = 3960 it should be possible to receive up to 198 IPv6 NIDs or 495 IPv4 NIDs, so I think this ticket can be closed as a duplicate of LU-10003 or similar?

            adilger Andreas Dilger added a comment - simmonsja , hornc , I thought there was just recently patch https://review.whamcloud.com/54673 " LU-17700 lnet: properly calculate ping buffer size " that was changing the limit of the number of NIDs in a ping reply because of IPv6? According to LNET_PING_BUFFER_MAX = 3960 it should be possible to receive up to 198 IPv6 NIDs or 495 IPv4 NIDs, so I think this ticket can be closed as a duplicate of LU-10003 or similar?

            People

              core-lustre-triage Core Lustre Triage
              ashehata Amir Shehata (Inactive)
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              Dates

                Created:
                Updated:
                Resolved: