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After running normally, the lpfc application produces the error of "Too many segments from dma_map_sg" (Doc ID 1420464.1)

Last updated on APRIL 21, 2020

Applies to:

Linux OS - Version Oracle Linux 5.0 and later
Oracle Cloud Infrastructure - Version N/A and later
Information in this document applies to any platform.


After bootup, the following messages flood the console:

lpfc_scsi_prep_dma_buf: Too many sg segments from dma_map_sg


This error is related to the number of Emulex HBA cards are in the system. This means that a system could operate successfully for some time, but fail once additional Emulex HBA cards are added. Alternatively, a large system with several Emulex cards could produce this error immediately.


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