read_complete(struct spdk_bdev_io *bdev_io, bool success, void *cb_arg) { struct hello_context_t *hello_context = cb_arg; if (success) { SPDK_NOTICELOG("Read string from bdev : %s\n", hello_context->buff); } else { SPDK_ERRLOG("bdev io read error\n"); } //结束后关闭chan...
nvme_ctrlr_createSPDK_POLLER_REGISTER(bdev_nvme_poll_adminq)SPDK_POLLER_REGISTER(bdev_nvme_async_poll) (b)bdev-nvme的probe spdk_nvme_probe>spdk_nvme_probe_async>> nvme_probe_internal>>> nvme_transport_ctrlr_scan>>> spdk_nvme_transport->ops.ctrlr_scan>>> nvme_pcie_ctrlr_scan>>> nvme_...
spdk_file_read spdk_file->fs->send_request spdk_blob_io_read blob_request_submit_op blob_request_submit_op_single bs_batch_read_dev blob_bdev->bs_dev.read bdev_blob_read spdk_bdev_read_blocks blob向上提供的写接口: spdk_file_write spdk_file->fs->send_request spdk_blob_io_write blob_...
为了解决该问题,SPDK封装了线程间异步传递消息 (Async Messaging Passing) 的方式。 4.2 线程间的高效通信 SPDK放弃使用传统的加锁方式来进行线程间的通信,因为这种方案比较低效。为了使同一个thread只执行自己所管理的资源,SPDK提供了Event (事件调用) 机制。该机制的本质是每个Reactor对应的数据结构 (struct spdk_...
由于单个CPU上只有一个Reactor thread,所以同一个Reactor thread 中不需要一些锁的机制来保护资源。当然,位于不同CPU的core上的thread还是需要通信必要。为了解决该问题,SPDK封装了线程间异步传递消息 (Async Messaging Passing) 的方式。 4.2 线程间的高效通信...
通过该结构文件系统读写操作发送的io请求最终到达物理存储设备 INIT_WORK(&ctrl->async_event_work, nvme_async_event_work) INIT_WORK(&ctrl->fw_act_work, nvme_fw_act_work) INIT_WORK(&ctrl->delete_work, nvme_delete_ctrl_work) INIT_DELAYED_WORK(&ctrl->ka_work, nvme_keep_alive_work) INIT_...
spdk_nvme_probe_poll_async() until it returns 0, indicating that the operation completed. A new qpair creation option, delay_pcie_doorbell, was added. This can be passed to spdk_nvme_alloc_io_qpair(). This makes the I/O submission functions, such as ...
async_op(baz,ctx); } voidfoo(void*ctx) { async_op(bar,ctx); } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. Don't split these functions up - keep them as a nice unit that can be read from bottom to top. ...
Addedspdk_bdev_open_async()API to allow asynchronous bdev open that waits for specified time until the block device appears. bdev_nvme Addedbdev_nvme_enable_controllerandbdev_nvme_disable_controllerRPC to enable and disable NVMe controller. For NVMe multipathcntlidis used to select only one NVMe...
The upper layer is expected to read ANA log page instead if true. The default value is false.New APIs, spdk_nvme_ctrlr_reset_async and spdk_nvme_ctrlr_reset_poll_async, have been added to reset a controller asynchronously.New RPC bdev_nvme_reset_controller was added, to reset an NVMe ...