39f552fc2d
Change-Id: Iebc8bba692530977d837fb6f3781fdb52a7e1945 Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
85 lines
4.1 KiB
Markdown
85 lines
4.1 KiB
Markdown
Changelog
|
|
=========
|
|
|
|
v16.06: NVMf userspace target
|
|
-----------------------------
|
|
|
|
This release adds a userspace NVMf (NVMe over Fabrics) target, conforming to the
|
|
newly-released NVMf 1.0/NVMe 1.2.1 specification. The NVMf target exports NVMe
|
|
devices from a host machine over the network via RDMA. Currently, the target is
|
|
limited to directly exporting physical NVMe devices, and the discovery subsystem
|
|
is not supported.
|
|
|
|
This release includes a general API cleanup, including renaming all declarations
|
|
in public headers to include a `spdk` prefix to prevent namespace clashes with
|
|
user code.
|
|
|
|
- NVMe
|
|
- The `nvme_attach()` API was reworked into a new probe/attach model, which
|
|
moves device detection into the NVMe library. The new API also allows
|
|
parallel initialization of NVMe controllers, providing a major reduction in
|
|
startup time when using multiple controllers.
|
|
- I/O queue allocation was changed to be explicit in the API. Each function
|
|
that generates I/O requests now takes a queue pair (`spdk_nvme_qpair *`)
|
|
argument, and I/O queues may be allocated using
|
|
`spdk_nvme_ctrlr_alloc_io_qpair()`. This allows more flexible assignment of
|
|
queue pairs than the previous model, which only allowed a single queue
|
|
per thread and limited the total number of I/O queues to the lowest number
|
|
supported on any attached controller.
|
|
- Added support for the Write Zeroes command.
|
|
- `examples/nvme/perf` can now report I/O command latency from the
|
|
the controller's viewpoint using the Intel vendor-specific read/write latency
|
|
log page.
|
|
- Added namespace reservation command support, which can be used to coordinate
|
|
sharing of a namespace between multiple hosts.
|
|
- Added hardware SGL support, which enables use of scattered buffers that
|
|
don't conform to the PRP list alignment and length requirements on supported
|
|
NVMe controllers.
|
|
- Added end-to-end data protection support, including the ability to write and
|
|
read metadata in extended LBA (metadata appended to each block of data in the
|
|
buffer) and separate metadata buffer modes.
|
|
See `spdk_nvme_ns_cmd_write_with_md()` and `spdk_nvme_ns_cmd_read_with_md()`
|
|
for details.
|
|
- IOAT
|
|
- The DMA block fill feature is now exposed via the `ioat_submit_fill()`
|
|
function. This is functionally similar to `memset()`, except the memory is
|
|
filled with an 8-byte repeating pattern instead of a single byte like memset.
|
|
- PCI
|
|
- Added support for using DPDK for PCI device mapping in addition to the
|
|
existing libpciaccess option. Using the DPDK PCI support also allows use of
|
|
the Linux VFIO driver model, which means that SPDK userspace drivers will work
|
|
with the IOMMU enabled. Additionally, SPDK applications may be run as an
|
|
unprivileged user with access restricted to a specific set of PCIe devices.
|
|
- The PCI library API was made more generic to abstract away differences
|
|
between the underlying PCI access implementations.
|
|
|
|
v1.2.0: IOAT user-space driver
|
|
------------------------------
|
|
|
|
This release adds a user-space driver with support for the Intel I/O Acceleration Technology (I/OAT, also known as "Crystal Beach") DMA offload engine.
|
|
|
|
- IOAT
|
|
- New user-space driver supporting DMA memory copy offload
|
|
- Example programs `ioat/perf` and `ioat/verify`
|
|
- Kernel-mode DMA engine test driver `kperf` for performance comparison
|
|
- NVMe
|
|
- Per-I/O flags for Force Unit Access (FUA) and Limited Retry
|
|
- Public API for retrieving log pages
|
|
- Reservation register/acquire/release/report command support
|
|
- Scattered payload support - an alternate API to provide I/O buffers via a sequence of callbacks
|
|
- Declarations and `nvme/identify` support for Intel SSD DC P3700 series vendor-specific log pages and features
|
|
- Updated to support DPDK 2.2.0
|
|
|
|
|
|
v1.0.0: NVMe user-space driver
|
|
------------------------------
|
|
|
|
This is the initial open source release of the Storage Performance Development Kit (SPDK).
|
|
|
|
Features:
|
|
- NVMe user-space driver
|
|
- NVMe example programs
|
|
- `examples/nvme/perf` tests performance (IOPS) using the NVMe user-space driver
|
|
- `examples/nvme/identify` displays NVMe controller information in a human-readable format
|
|
- Linux and FreeBSD support
|