Commit f84744e9 authored by Shuhei Matsumoto's avatar Shuhei Matsumoto Committed by Darek Stojaczyk
Browse files

CHANGELOG: update for DIF feature 



In SPDK 19.07, DIF insert and strip is supported for TCP transport of NVMe-oF
target, and  DIF reference tag remap is now supported for partitioned virtual
bdev modules.

This patch updates CHANGELOG to reflect these updates.

If summarizing shortly,

DIF insert/strip is supported in the NVMe/TCP target. User can choose
DIF insert/strip or pass-through based on the use case. DIF reference tag
remapping is supported in partition type virtual bdevs.

Signed-off-by: default avatarShuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Change-Id: I452ccb60713928087e90bae0cfbf3393dfd61be7
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/462368


Reviewed-by: default avatarChangpeng Liu <changpeng.liu@intel.com>
Reviewed-by: default avatarDarek Stojaczyk <dariusz.stojaczyk@intel.com>
Tested-by: default avatarSPDK CI Jenkins <sys_sgci@intel.com>
parent 89003d5c

CHANGELOG.md

+25 −0
Original line number Diff line number Diff line
@@ -10,6 +10,18 @@ Blobfs file asynchronous operations were added to public APIs. 


A new file API `spdk_posix_file_load` was added to load file content into a data buffer.



New APIs `spdk_dif_ctx_set_data_offset`, `spdk_dif_verify_stream`,

`spdk_dif_get_range_with_md`, `spdk_dif_get_length_with_md` have been added,

and existing APIs `spdk_dif_ctx_init`, `spdk_dif_set_md_interleave_iovs`, and

`spdk_dif_generate_stream` have been refined to insert or strip DIF by stream

fasion with any alignment.



New APIs `spdk_dif_ctx_set_remapped_init_ref_tag`, `spdk_dif_remap_ref_tag`,

and `spdk_dix_remap_ref_tag` have been added to remap DIF reference tag.



New APIs `spdk_dif_update_crc32c` and `spdk_dif_update_crc32c_stream` have been

added to compute CRC-32C checksum for extended LBA payload.



### NVMe-oF Target



Persistent reservation emulation has been added to the NVMe-oF target. Persistent reservation
@@ -34,6 +46,15 @@ scheduling strategy among different spdk threads. 


Added infrastructure to retrieve global and per poll group NVMf statistics.



DIF strip and insert is now supported for TCP transport. When it is enabled, DIF

setting is not exposed to the NVMe-oF initiator, and DIF is attached into data

for write I/O and stripped from data for read I/O.



Added a field `dif_insert_or_strip` to struct spdk_nvmf_transport_opts, and

updated the related rpc function nvmf_create_transport to make this

configurable parameter available to users. The `dif_insert_or_strip` is relevant

for TCP transport for now and used to configure the DIF strip and insert.



### notify



The function `spdk_notify_get_types()` and `spdk_notify_get_events()` were
@@ -56,6 +77,10 @@ would expect the drive to see the slowest 1% of I/O report. For underlying drive 
significant latency, the latency values provided to the drive will be additive. This should be

taken into account if trying to achieve an artificial latency on top of an nvme drive or aio device.



DIF reference tag remapping is now supported for partition type virtual bdev

modules. When using partition type virtual bdevs, block address space is

remapped during I/O processing and DIF reference tag is remapped accordingly.



### nvme



Added spdk_nvme_ctrlr_get_transport_id() to get the transport ID from a