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  1. Lustre
  2. LU-10213

o2iblnd: Potential discrepancy when allocating qp

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      patch https://review.whamcloud.com/#/c/18347 introduced a bug. Basically you're negotiating the number of fragments and then explicitly setting the max_send_wrs according to that number. This patch introduces the logic where if you fail to allocate the qp then you reduce max_send_wrs by quarter, but that could cause a problem where not enough wrs are available under heavy load, if you're sending multiple fragments.

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          is related to

          Bug - A problem which impairs or prevents the functions of the product. LU-12385 2.12.2: IOR read testing reliably inducing LNetError: Timed out RDMA with ...@o2ib1 (6): c: 0, oc: 0, rc: 63

          • Major - Major loss of function.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. LU-12901 Failing to create a properly sized IB queue pair

          • Major - Major loss of function.
          • Resolved
          is related to

          Bug - A problem which impairs or prevents the functions of the product. LU-7124 MLX5: Limit hit in cap.max_send_wr

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Resolved

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              ashehata Amir Shehata (Inactive)
              ashehata Amir Shehata (Inactive)
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