Almost all I/O callbacks in ftl utilize data in ftl_io, which is
initialized as callback argument in ftl_io_init_internal. This patch
changes the behavior to always returning the ftl_io struct in addition
to an extra opaque buffer.
Signed-off-by: Mateusz Kozlowski <mateusz.kozlowski@intel.com>
Change-Id: I611ab1b33575f599798a2bb65c231a724c852c7f
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/455831
Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-by: Wojciech Malikowski <wojciech.malikowski@intel.com>
Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Keep lba map related fields in separate struct directly
in the band. Cleanup interfaces depended on ftl_md.
Lba map structure will be extended in next commit.
Change-Id: I1cfc2f2ff0c0e90bb63f39808780845673002e70
Signed-off-by: Wojciech Malikowski <wojciech.malikowski@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/453370
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Split the IO in case io->iov_cnt exceeds the FTL_IO_MAX_IOVEC. It allows
the user to pass any number of iovecs. Each IO request is now split if
necessary and submitted via ftl_io_call_foreach_child submitting each
child individually. Any resubmissions need to be handled on a child
level, as parent request doesn't track its children submission status.
Change-Id: If54249d54225b34191216a366c227f79215abc90
Signed-off-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/455527
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Extended ftl_band_read_lba_map() interface to provide
range of lba map to read.
Added ftl_xfer_offset_from_ppa() function for
calculating offset of read portion of lba map
based on ppa address from IO. This offset is
used for coping read lba map portion to internal
ftl buffer.
Change-Id: I1c72a18c79eda8c33cd0b20ea36a5d9521a09d06
Signed-off-by: Wojciech Malikowski <wojciech.malikowski@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/449435
Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
This assert is not needed anymore.
Change-Id: I7bc85c980c2e120b105b35763b9bea5960564acc
Signed-off-by: Wojciech Malikowski <wojciech.malikowski@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/456590
Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Keep an array of iovecs tied to each IO. Internal IOs can have
iov_cnt > 1 without having to allocate additional memory. User's iovec
can now be modified too (e.g. when splitting the request).
Change-Id: Iec73c6dad59acdc331a1461fd7feac085138a8de
Signed-off-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/455525
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Replaced single IO pointer with a queue. This allows multiple requests
to be queued when the writes cannot be scheduled.
Change-Id: I0cde50e7378108a6aab4ef6fe601cb854244f5d5
Signed-off-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/455524
Reviewed-by: Wojciech Malikowski <wojciech.malikowski@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
On the user IO path, the flow always follows the same procedure:
allocate ftl_io and initialize it using ftl_io_user_init. There's no
point in separating these two actions.
Change-Id: I578347ccc7c85e5945368dd6bf76c58985af3939
Signed-off-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/455523
Reviewed-by: Wojciech Malikowski <wojciech.malikowski@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
There's no point in synchronously returning an error from ftl_io_write
/ ftl_io_read as they're also reported in the IO's completion callback.
All errors are now reported through io->status.
Change-Id: I4adf4e13221b63715625276042e1172cd63b8f9b
Signed-off-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/455521
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Select the method of choosing next PPA to read inside ftl_submit_read,
as it can be deduced from other arguments.
Change-Id: I6cbd37c2c6d7f073bf735491b4960d72e327c4e6
Signed-off-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/455520
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Reviewed-by: Wojciech Malikowski <wojciech.malikowski@intel.com>
Some of the internal IOs split the contiguous data buffer into multiple
iovecs to separate the requests. It's unnecessary and can be replaced
by checking the position within the data buffer.
Change-Id: I9255ea0072fee6c4e6a7dca21e4008780bc45610
Signed-off-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/455519
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Wojciech Malikowski <wojciech.malikowski@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Advance parent's IO position when children positions are advanced.
There's no need to call ftl_io_advance twice for the same request
anymore.
Change-Id: I1f7f04a3a83575b11e7bf0b13c0c8f3bf98b5522
Signed-off-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/455518
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Wojciech Malikowski <wojciech.malikowski@intel.com>
Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Padding requests are issued in multiple batches at the same time
when shutdown occurs. This allows for faster removal.
Change-Id: Iea40d2418bedbd7cf3c6865e5eb8f85871db13cd
Signed-off-by: Kozlowski Mateusz <mateusz.kozlowski@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/454578
Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Wojciech Malikowski <wojciech.malikowski@intel.com>
Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
For the latest TLC NAND, one write buffer unit (rwb batch)
needs to be spread over three PUs instead of being allocated
to a single PU for better sequential read performance
since the optimal write size(ws_opt) of 3D TLC NAND is
3 times bigger than the optimal read size(rs_opt).
I added num_interleave_units in 'struct spdk_ftl_conf'
to configure the number of interleaving units per ws_opt.
If num_interleave_units is set as 1, the whole of the ws_opt
blocks are placed sequentially around each PU.
If num_interleave_units is set as N, the 1/N of the ws_opt
blocks are staggered. So consecutively numbered blocks
are separated by ws_opt / num_interleave_units.
The sequential read performance is improved from 1.9GiB/s
up to 2.97GiB/S with this patch on our system. No performance
degradation is observed on sequential writes or
4KB random reads/writes.
Please refer to the Trello card for more details.
https://trello.com/c/Osol93ZU
Change-Id: I371e72067b278ef43c3ac87a3d9ce9010d3fcb15
Signed-off-by: Claire J. In <claire.in@circuitblvd.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/450976
Reviewed-by: Young Tack Jin <youngtack.jin@circuitblvd.com>
Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Reviewed-by: Wojciech Malikowski <wojciech.malikowski@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Apart from writing the data to OCSSD, mirror the latest two bands of
data on the persistent write buffer cache. Currently the data is only
sent there, further patches will add metadata support, shutdown recovery
and L2P updates.
Change-Id: Ief05d0c23fa0e25bd6085e0ce3e1528d6736d174
Signed-off-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/450266
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Removed unused 'context' parameter. Removed 'lbk' parameter from
next_ppa function signature, as it could be easily deduced from ftl_io
passed as the first argument.
Change-Id: I2b2b699ffc1b282086adcc2d4dc6c4691a87a7c5
Signed-off-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/454228
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Replaced all direct accesses to io->lba / io->iov with getter functions,
as they both should behave differently based on the FTL_IO_VECTOR_LBA
flag and io->iov_cnt respectively.
Change-Id: I0d387a2a908cc37afa9e1b97ca5b408cef0d6b08
Signed-off-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/450265
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Moved early read completion (due to cache hit or reading unwritten
data) traces to ftl_submit_read to keep them in one place. Also removed
the context parameter from next_ppa function, as it was unused.
Change-Id: Ic69174a6cdc0e626550cd673789e86bb891094bf
Signed-off-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/453683
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Replaced the unnamed unions with named ones. It makes the assignments
easier (it allows for direct assignment instead of having to choose the
correct union member).
Change-Id: I130233a096070092275a040e73cbaf36106ae1ab
Signed-off-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/453682
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
This fixes incorrect LBA reported by traces (it reported the next one,
as the IO position was advanced before storing the trace).
Change-Id: I788853d729dd25e90c6c899be0616aa3a79d08b3
Signed-off-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/453681
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
There are no guarantees of the order of completion
of NVMe IO submission queue so wait for write completion
on specific chunk before submitting another write to it.
To control chunk occupancy split IO to child requests
and release chunk in IO completion callback.
Change-Id: I44147a21b528a7f33fb92b9e77d7de8f5b18f8ff
Signed-off-by: Wojciech Malikowski <wojciech.malikowski@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/449239
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-by: Young Tack Jin <youngtack.jin@circuitblvd.com>
Reviewed-by: Claire Jihyun In <claire.in@circuitblvd.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Change-Id: I7a7667e1c4e6321150e5bc8eb4287fb61847ccb5
Signed-off-by: Wojciech Malikowski <wojciech.malikowski@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/450174
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-by: Young Tack Jin <youngtack.jin@circuitblvd.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Extended the IO descriptors with the ability to group them together in a
parent / child(-ren) relationship. It allows to delay parent completion
until all children are done and enables the children to have additional
context in their completion routines (as opposed to having a single IO
describe all requests).
Signed-off-by: Konrad Sztyber <konrad.sztyber@intel.com>
Change-Id: I6ad111dc231813e397697109a333e2a5d7f5941d
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/449068
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Wojciech Malikowski <wojciech.malikowski@intel.com>
Reviewed-by: Young Tack Jin <youngtack.jin@circuitblvd.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
This patch is starting point for metadata refactor
which is needed for efficient ANM events support.
Change-Id: I81d864605e69008d8e3922fb61adf504187447a1
Signed-off-by: Wojciech Malikowski <wojciech.malikowski@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/449328
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Added means to configure libftl to use (optionally) another bdev as
persistent write buffer cache.
Signed-off-by: Konrad Sztyber <konrad.sztyber@intel.com>
Change-Id: I97028a681be168d9386eac8a226631ff772f803b
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/448629
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Added internal retry IO queue. In case ENOMEM from
nvme layer request is put to retry queue. When some
inflight operations are completed try to make progress
on IOs in retry queue in first place.
Change-Id: Ie9d3d20bd34431ee57f9454f242b0cdca349c804
Signed-off-by: Wojciech Malikowski <wojciech.malikowski@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/448461
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Change-Id: I026902096686da37c0ca7086bb5d91b35d90ffa6
Signed-off-by: Wojciech Malikowski <wojciech.malikowski@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/447340
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-by: Young Tack Jin <youngtack.jin@circuitblvd.com>
Reviewed-by: Claire Jihyun In <claire.in@circuitblvd.com>
FTL should pass IO errors to upper layer only in
completion callback to be consistent on sync and
async error paths.
Change-Id: I29c81af477b476c1e10b7933126737a222553ffa
Signed-off-by: Wojciech Malikowski <wojciech.malikowski@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/447176
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
This patch allows to process more then one I/O
completion per reactor iteration.
Change-Id: Ib58013cd96c2b7fe378f175b34d58c6d1d219dcd
Signed-off-by: Wojciech Malikowski <wojciech.malikowski@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/447175
Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Young Tack Jin <youngtack.jin@circuitblvd.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
ENOMEM is expected when nvme_qpair will be out of resources.
In such a case ENOMEM shall be propagated to allow upper (bdev)
layer proper handling.
Change-Id: Ie647c2d3efff24a8de949a22ac42a31dfd0e78b7
Signed-off-by: Wojciech Malikowski <wojciech.malikowski@intel.com>
Reviewed-on: https://review.gerrithub.io/c/445580
Reviewed-by: Jakub Radtke <jakub.radtke@intel.com>
Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Added check before write submission to indicate if
LBA was update in meantime. In such case don't set band's
metadata and rwb entry cache bit. Previous implementation
invalidates such address during write completion and could
cause that inconsistent lba map was stored into disk.
Change-Id: I4353d9f96c53132ca384aeca43caef8d11f07fa4
Signed-off-by: Wojciech Malikowski <wojciech.malikowski@intel.com>
Reviewed-on: https://review.gerrithub.io/c/444403
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
This patch adds supplementary tracing for OCSSD library to allow
for more efficient debugging and profiling of the user I/O path
as well as the background tasks (maintaining write pointer,
defragmentation, ANM event handling, etc.).
Change-Id: I741f1304f4ee0eba019e31bea7814af475c3296e
Signed-off-by: Konrad Sztyber <konrad.sztyber@intel.com>
Signed-off-by: Wojciech Malikowski <wojciech.malikowski@intel.com>
Signed-off-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-on: https://review.gerrithub.io/c/431327
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
The patch adds support for retrieving asynchronous media management
events sent by the drives. SSDs needs to inform the host of various
incidents concerning the data placed on the media. The events include
wear-leveling, read disturb, and background data refresh.
In order to poll for this asynchronous events, a separate thread is
added that polls for completion of admin commands for each of Open
Channel disk and dispatches the ANM events to the appropriate block
devices.
Change-Id: Ic5d4943614c65a9d8849c500826841ae21d4c9c5
Signed-off-by: Wojciech Malikowski <wojciech.malikowski@intel.com>
Signed-off-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-on: https://review.gerrithub.io/c/431324
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Chandler-Test-Pool: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
This patch implements module responsible for data relocation due to
defragmentation, wear-leveling, read disturb and/or background data
refresh.
The submodule supports moving whole bands, chunks, as well as
single logical blocks.
Change-Id: Iaef37f50e0bb93986a21e495174f6d5ef8a1f30d
Signed-off-by: Wojciech Malikowski <wojciech.malikowski@intel.com>
Signed-off-by: Konrad Sztyber <konrad.sztyber@intel.com>
Signed-off-by: Jakub Radtke <jakub.radtke@intel.com>
Reviewed-on: https://review.gerrithub.io/c/431323
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Chandler-Test-Pool: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
This patch adds core FTL (flash translation layer) submodules.
On regular SSDs the FTL is part of firmware, whereas Open Channel
enables moving it to the host and allows for having full controll
of data placement on the device.
Main functionalities added:
* logical to physical address map
* read / write buffer cache
* wear-leveling
* bad block management
Change-Id: I5c28aa277b212734bd4b1f71ae386b3d6f8c3715
Signed-off-by: Konrad Sztyber <konrad.sztyber@intel.com>
Signed-off-by: Wojciech Malikowski <wojciech.malikowski@intel.com>
Signed-off-by: Jakub Radtke <jakub.radtke@intel.com>
Signed-off-by: Mateusz Kozlowski <mateusz.kozlowski@intel.com>
Reviewed-on: https://review.gerrithub.io/c/431322
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Chandler-Test-Pool: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
