The SPDK team is proud to announce the v17.07 release. This release incorporates a number of ease-of-use improvements and API cleanups.

Build System

A configure script has been added to simplify the build configuration process. The existing CONFIG file and make CONFIG_... options are also still supported. Run ./configure --help for information about available configuration options.

A DPDK submodule has been added to make building SPDK easier. If no --with-dpdk option is specified to configure, the SPDK build system will automatically build a known-good configuration of DPDK with the minimal options enabled. See the Building section of for more information.

A Vagrant setup has been added to make it easier to develop and use SPDK on systems without suitable NVMe hardware. See the Vagrant section of for more information.

Userspace vhost-blk target

The vhost library and example app have been updated to support the vhost-blk protocol in addition to the existing vhost-scsi protocol. See the vhost documentation for more details.

Block device abstraction layer (bdev)

A GPT virtual block device has been added, which automatically exposes GPT partitions with a special SPDK-specific partition type as bdevs. See the GPT bdev documentation for more information.

In support of the GPT bdev, a new virtual bdev “examine” interface has been added to the bdev module API. This allows bdev modules to check if a newly-added bdev contains a specific on-disk format, such as a GPT partition table, and gives them the ability to export virtual bdevs as desired.

NVMe driver

The NVMe driver has been updated to support recent Intel SSDs, including the Intel® Optane™ SSD DC P4800X series.

A workaround has been added for devices that fail to recognize register writes during controller reset.

The NVMe driver now allocates request tracking objects on a per-queue basis. The number of requests allowed on an I/O queue may be set during spdk_nvme_probe() by modifying io_queue_requests in the opts structure.

The SPDK NVMe fio_plugin has been updated to support multiple threads (numjobs).

spdk_nvme_ctrlr_alloc_io_qpair() has been modified to allow the user to override controller-level options for each individual I/O queue pair. Existing callers with qprio == 0 can be updated to:

... = spdk_nvme_ctrlr_alloc_io_qpair(ctrlr, NULL, 0);

Callers that need to specify a non-default qprio should be updated to:

struct spdk_nvme_io_qpair_opts opts;
spdk_nvme_ctrlr_get_default_io_qpair_opts(ctrlr, &opts, sizeof(opts));
opts.qprio = SPDK_NVME_QPRIO_...;
... = spdk_nvme_ctrlr_alloc_io_qpair(ctrlr, &opts, sizeof(opts));

Environment Abstraction Layer

The environment abstraction layer has been updated to include several new functions in order to wrap additional DPDK functionality. See include/spdk/env.h for the current set of functions.