286 typedef void (*spdk_nvme_attach_cb)(void *cb_ctx, const struct spdk_nvme_transport_id *trid, 287 struct spdk_nvme_ctrlr *ctrlr, 288 const struct spdk_nvme_ctrlr_opts *opts); 289 290 /** 291 * Callback for spdk_nvme_probe() to report that a device attached to the userspace...
对虚拟机中I/O (virtio) 的加速,主要支持Linux系统下的QEMU/KVM作为hypervisor 管理虚拟机的场景,使用vhost交互协议实现基于共享内存通道的高效vhost用户态target (例如vhost SCSI/blk/NVMe target) SPDK加速数据库存储引擎。通过实现了RocksDB中的抽象文件类,SPDK的blobfs/blobstore目前可以和Rocksdb集成,用于在NVMe SSD...
rc = spdk_nvme_probe(NULL, probe_cb, attach_cb, NULL); 枚举NVMe 设备,向 SPDK 返回布尔值,表示是否连接设备: 01static bool 02probe_cb(void *cb_ctx, struct spdk_pci_device *dev, struct spdk_nvme_ctrlr_opts *opts) 03{ 04printf("Attaching to %04x:%02x:%02x.%02x\n", 05spdk_pci_devic...
39structctrlr_entry {40structspdk_nvme_ctrlr *ctrlr;41structctrlr_entry *next;42charname[1024];43};4445structns_entry {46structspdk_nvme_ctrlr *ctrlr;47structspdk_nvme_ns *ns;48structns_entry *next;49structspdk_nvme_qpair *qpair;50};5152staticstructctrlr_entry *g_controllers =NULL;...
struct spdk_nvme_ctrlr *ctrlr, const struct spdk_nvme_ctrlr_opts *opts){printf("Attached to controller %!s(MISSING)\n", trid->traddr);g_controllers[g_num_controllers++] = ctrlr;}static voidctrlr_detach_cb(void *cb_ctx, struct spdk_nvme_ctrlr *ctrlr){printf("Detached from ...
SPDK 存储性能开发套件(Storage Performance Development Kit ) —— 针对于支持nvme协议的SSD设备。 SPDK是一种高性能的解决方案。 硬件推动软件革新需求。 Intel发布的,提供了一整套工具和库,以实现高性能、扩展性强、全用户态的存储应用程序。它是继DPDK之后,intel在存储领域推出的又一项颠覆性技术,旨在大幅缩减存储...
rc = spdk_nvme_probe(NULL, probe_cb, attach_cb, NULL); Enumerate the NVMe devices, returning a boolean value to SPDK as to whether the device should be attached: static bool probe_cb(void *cb_ctx, struct spdk_pci_device *dev, struct spdk_nvme_ctrlr_opts *opts) ...
rc = spdk_nvme_probe(NULL, probe_cb, attach_cb, NULL); Enumerate the NVMe devices, returning a boolean value to SPDK as to whether the device should be attached: static bool probe_cb(void *cb_ctx, struct spdk_pci_device *dev, struct spdk_nvme_ctrlr_opts *opts) ...
在了解了SPDK的IO栈之后,我们进一步来分析一下vhost进程的线程模型,如下图所示。图中示例场景为,一台服务器上插了一张NVMe SSD卡,卡上划分了三个namespace;三个namespace分别配给了三台虚拟机的vhost-user-blk-pci设备。 vhost进程启动时可以配置多个轮循线程(reactor),每个线程绑定一个物理CPU。在示例场景下,我...
本文基于SPDK v23.1版本的hello_world示例来说明SPDK的nvme命令处理流程,代码架构如下: example\nvme\hello_world.c int main(int argc, char **argv) { spdk_env_opts_init(&opts); rc = parse_args(argc, argv, &opts); // 参数解析 opts.name = "hello_world"; ...