admin queue: 用于发送控制命令的queue,所有非io命令都会通过此queue发送给nvme设备,一个nvme设备只有一个admin queue,在nvme_dev中,使用queues[0]来描述. io queue: 用于发送io命令的queue,所有io命令都是通过此queue发送给nvme设备,简单来说读/写操作都是通过io queue发送给nvme设备的,一个nvme设备有一个或多个...
本指南针对华为ES3000 V3 NVMe PCIe SSD(以下简称ES3000 V3)进行说明,介绍ES3000 V3产品信息及如何使用ES3000 V3(包括安装配置、操作与维护等)。 NVMe 管理命令支持情况 ES3000 V3支持所有NVMe 1.2协议规定必须支持的管理命令,分别为: Delete I/O Submission Queue ...
If delete() is kicking off in this period the queues are still in CONNECTED state. Part of the delete sequence is trying to issue ctrl shutdown if the admin queue is CONNECTED (which it is!). This request is issued but stuck in blk-mq waiting for the queues to start again. This ...
NVME_STATUS_INVALID_QUEUE_DELETIONIndicates the following status for the Delete I/O Completion Queue command:It is invalid to delete the Specified I/O Completion Queue. The typical reason for this error condition is that there is an associated I/O Submission Queue that has not been deleted. NV...
union {structnvme_common_command common;structnvme_rw_command rw;structnvme_identify identify;structnvme_features features;structnvme_create_cq create_cq;structnvme_create_sq create_sq;structnvme_delete_queue delete_queue;structnvme_download_firmware dlfw;structnvme_format_cmd format;structnvme_dsm_cmd...
union {structnvme_common_command common;structnvme_rw_command rw;structnvme_identify identify;structnvme_features features;structnvme_create_cq create_cq;structnvme_create_sq create_sq;structnvme_delete_queue delete_queue;structnvme_download_firmware dlfw;structnvme_format_cmd format;structnvme_dsm_cmd...
.localport_delete = fcloop_localport_delete, .remoteport_delete = fcloop_remoteport_delete, .create_queue = fcloop_create_queue, .delete_queue = fcloop_delete_queue, .ls_req = fcloop_h2t_ls_req, .fcp_io = fcloop_fcp_req,
Admin Queue的ID都是0。 IO Submission Queues和对应的IO Completion Queues用来处理IO命令,规范定义了一种IO Command Set,叫做NVM Command Set,与IO队列一起使用。系统在创建Submission Queue前必须先创建相关的Completion Queue,同时,删除Submission Queue操作也要先于相关的Completion Queue。 实际上NVMe还有另外一种...
NVMe有两种命令:admin命令和I/O命令。admin命令时用以Host管理和控制SSD的,而I/O命令用于Host与SSD之间的数据传输。 NVMe Driver支持以下admin处理和命令:DeleteI/O Submission Queue,CreateI/O Submission Queue,GetLog Page,DeleteI/O Completion Queue,CreateI/O Completion Queue,Identify,NamespaceAttachment,Abort...
NVMe Host Controller IP具备ASQ/ACQ引擎,实现NVMe Admin Command Set:Identify、SMART、Create/Delete IO Submission/Completion Queue、Set Feature。 NVMe Host Controller IP具备IO(Page) Wr/Rd引擎和SQ1/CQ1引擎,实现对PCIe SSD的IO(Page)读写、Cache Flush和逻辑数据块擦除功能。 NVMe Host Controller IP具备DMA...