iSER on 4.5-rc3 seems to fall over pretty quickly for me. The test is a a single LUN, against a Linux iSER target, also running 4.5-rc. Both are usinx mlx4 hardware. These messages appear immediately when running xfstests on xfs (but not during mkfs.xfs), and after a few dozend tests with ext4, and ultimiately lock up the system: Feb 13 13:33:57 redstar37 kernel: [ 566.871038] iser: iser_fast_reg_fmr: ib_fmr_pool_map_phys failed: -22 Feb 13 13:33:57 redstar37 kernel: [ 566.878278] iser: iser_prepare_read_cmd: Failed to set up Data-IN RDMA Feb 13 13:33:57 redstar37 kernel: [ 566.885604] iser: iser_send_command: conn ffff8809261bbb28 failed task->itt 5 err -22 Feb 13 13:33:57 redstar37 kernel: [ 566.899804] iser: iser_fast_reg_fmr: ib_fmr_pool_map_phys failed: -22 Feb 13 13:33:57 redstar37 kernel: [ 566.907037] iser: iser_prepare_read_cmd: Failed to set up Data-IN RDMA Feb 13 13:33:57 redstar37 kernel: [ 566.914355] iser: iser_send_command: conn ffff8809261bbb28 failed task->itt 6 err -22 When hacking the initiator to use FRs instead of FMRs I get something fairly similar: Feb 13 22:49:18 redstar37 kernel: [ 277.500477] iser: iser_fast_reg_mr: failed to map sg (5/6) Feb 13 22:49:18 redstar37 kernel: [ 277.506679] iser: iser_prepare_write_cmd: Failed to register write cmd RDMA mem Feb 13 22:49:18 redstar37 kernel: [ 277.514906] iser: iser_send_command: conn ffff88091ac8cb28 failed task->itt 59 err -22 Feb 13 22:49:18 redstar37 kernel: [ 277.529614] iser: iser_fast_reg_mr: failed to map sg (5/6) Feb 13 22:49:18 redstar37 kernel: [ 277.535785] iser: iser_prepare_write_cmd: Failed to register write cmd RDMA mem Feb 13 22:49:18 redstar37 kernel: [ 277.544006] iser: iser_send_command: conn ffff88091ac8cb28 failed task->itt 29 err -22 Feb 13 22:49:18 redstar37 kernel: [ 277.558669] iser: iser_fast_reg_mr: failed to map sg (5/6) Feb 13 22:49:18 redstar37 kernel: [ 277.564844] iser: iser_prepare_write_cmd: Failed to register write cmd RDMA mem Feb 13 22:49:18 redstar37 kernel: [ 277.573069] iser: iser_send_command: conn ffff88091ac8cb28 failed task->itt 78 err -22 Feb 13 22:49:18 redstar37 kernel: [ 277.587677] iser: iser_fast_reg_mr: failed to map sg (5/6) The only other kernel version I had available quickly is 3.16 from Debian Jessie, and that works fine. -- 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
