On 02/14/2017 09:15 AM, Max Gurtovoy wrote: > this is 4MB transactions. can you increase the cmd_sg_entries to the > maximum and run the test again ? How could that affect the error message Laurence reported? If cmd_sg_entries is too low then the block layer refuses direct I/O requests that are too large. From __scsi_init_queue(): blk_queue_max_segments(q, min_t(unsigned short, shost->sg_tablesize, SG_MAX_SEGMENTS)); Bart. -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
