bdev: send bdev reset based on outstanding IO and a new timeout parameter

A new parameter io_drain_timeout has been added to spdk_bdev
structure. If this value is unset, the bdev reset behavior
does

bdev: send bdev reset based on outstanding IO and a new timeout parameter

A new parameter io_drain_timeout has been added to spdk_bdev
structure. If this value is unset, the bdev reset behavior
does not change.
The io_drain_timeout controls how long a bdev reset must wait for IO
to complete prior to issuing a reset to the underlying device.
If there is no outstanding IO at the end of that period, the reset
is skipped.

Change-Id: I585af427064ce234a4f60afc3d69bc9fc3252432
Signed-off-by: Krzysztof Karas <krzysztof.karas@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/14501
Reviewed-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Mellanox Build Bot

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Replace most BSD 3-clause license text with SPDX identifier.

Many open source projects have moved to using SPDX identifiers
to specify license information, reducing the amount of
boilerplate code in

Replace most BSD 3-clause license text with SPDX identifier.

Many open source projects have moved to using SPDX identifiers
to specify license information, reducing the amount of
boilerplate code in every source file. This patch replaces
the bulk of SPDK .c, .cpp and Makefiles with the BSD-3-Clause
identifier.

Almost all of these files share the exact same license text,
and this patch only modifies the files that contain the
most common license text. There can be slight variations
because the third clause contains company names - most say
"Intel Corporation", but there are instances for Nvidia,
Samsung, Eideticom and even "the copyright holder".

Used a bash script to automate replacement of the license text
with SPDX identifier which is checked into scripts/spdx.sh.

Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: Iaa88ab5e92ea471691dc298cfe41ebfb5d169780
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/12904
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@nvidia.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Dong Yi <dongx.yi@intel.com>
Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-by: Paul Luse <paul.e.luse@intel.com>
Reviewed-by: <qun.wan@intel.com>

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bdev: abort all IOs when unregistering the bdev

To fix issue: #2484

When unregistering the bdev, will send out the message
to each thread to abort all the IOs including IOs from
nomem_io queue, nee

bdev: abort all IOs when unregistering the bdev

To fix issue: #2484

When unregistering the bdev, will send out the message
to each thread to abort all the IOs including IOs from
nomem_io queue, need_buf_small queue and need_buf_large queue.

The new SPDK_BDEV_STATUS_UNREGISTERING state is newly
added to indicate this unregister operation.

In this case, the bdev unregister operation becomes the
async operation as each thread will be sent the message
to abort the IOs and as the last step, it will unregister
the required bdev and associted io device.

On the other hand, the queued_resets will be handled
separately and not aborted in the bdev unregister.

New unit test cases are also added:
enomem_multi_bdev_unregister: to abort the IO from
nomem_io queue during the unregister operation
bdev_open_ext_unregister: to handle the events and
async operations from the unregister operation

Change-Id: Ib1663c0f71ffe87144869cb3a684e18eb956046b
Signed-off-by: GangCao <gang.cao@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/12573
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
Reviewed-by: Aleksey Marchuk <alexeymar@nvidia.com>
Reviewed-by: Dong Yi <dongx.yi@intel.com>

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bdev: Fix race among bdev_reset(), bdev_close(), and bdev_unregister()

There is a race condition when a bdev is unregistered while reset is
submitted from the upper layer very frequently.

spdk_io_d

bdev: Fix race among bdev_reset(), bdev_close(), and bdev_unregister()

There is a race condition when a bdev is unregistered while reset is
submitted from the upper layer very frequently.

spdk_io_device_unregister() may fail because it is called while
spdk_for_each_channel() is processed.

spdk_io_device_unregister io_device bdev_Nvme0n1 (0x7f4be8053aa1)
has 1 for_each calls outstanding

To avoid this failure, defer calling spdk_io_device_unregister() until
reset completes if reset is in progress when unregistration is ready
to do, and then reset completion calls spdk_io_device_unregister()
later.

A bdev cannot be opened if it is already deleting. So we do not need
to hold mutex.

Signed-off-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
Change-Id: Ida1681ba9f3096670ff62274b35bb3e4fd69398a
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/12222
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Michael Haeuptle <michaelhaeuptle@gmail.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Paul Luse <paul.e.luse@intel.com>

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bdev: pull/push data if bdev doesn't support
memory domains

If bdev doesn't support any memory domain then allocate
internal bounce buffer, pull data for write operation before
IO submission, push d

bdev: pull/push data if bdev doesn't support
memory domains

If bdev doesn't support any memory domain then allocate
internal bounce buffer, pull data for write operation before
IO submission, push data to memory domain once IO completes
for read operation.

Update test tool, add simple pull/push functions
implementation.

Signed-off-by: Alexey Marchuk <alexeymar@mellanox.com>
Change-Id: Ie9b94463e6a818bcd606fbb898fb0d6e0b5d5027
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/10069
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Shuhei Matsumoto <smatsumoto@nvidia.com>

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spelling: test

Part of #2256

* achieve
* additionally
* against
* aliases
* already
* another
* arguments
* between
* capabilities
* comparison
* compatibility
* configuration
* continuing
* contro

spelling: test

Part of #2256

* achieve
* additionally
* against
* aliases
* already
* another
* arguments
* between
* capabilities
* comparison
* compatibility
* configuration
* continuing
* controlq
* cpumask
* default
* depends
* dereferenced
* discussed
* dissect
* driver
* environment
* everything
* excluded
* existing
* expectation
* failed
* fails
* following
* functions
* hugepages
* identifiers
* implicitly
* in_capsule
* increment
* initialization
* initiator
* integrity
* iteration
* latencies
* libraries
* management
* namespace
* negotiated
* negotiation
* nonexistent
* number
* occur
* occurred
* occurring
* offsetting
* operations
* outstanding
* overwhelmed
* parameter
* parameters
* partition
* preempts
* provisioned
* responded
* segment
* skipped
* struct
* subsystem
* success
* successfully
* sufficiently
* this
* threshold
* transfer
* transferred
* unchanged
* unexpected
* unregistered
* useless
* utility
* value
* variable
* workload

Change-Id: I21ca7dab4ef575b5767e50aaeabc34314ab13396
Signed-off-by: Josh Soref <jsoref@gmail.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/10409
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>

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test: optimize unit test .gitignore files

Just add a single .gitignore file in test/unit
that covers *_ut. That allows us to eliminate
100 .gitignore files in the test/unit directory
hierarchy.

Si

test: optimize unit test .gitignore files

Just add a single .gitignore file in test/unit
that covers *_ut. That allows us to eliminate
100 .gitignore files in the test/unit directory
hierarchy.

Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: Ia190587b4d5c6f1847471be27550cbfb843dc01e

Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/9235
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>

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mk/unit: link with trace library

Linking each unit test with spdk_trace allows for getting rid of lots of
stub definitions for the trace functions. The behavior stays the same,
as the trace calls r

mk/unit: link with trace library

Linking each unit test with spdk_trace allows for getting rid of lots of
stub definitions for the trace functions. The behavior stays the same,
as the trace calls result in no-op anyway because none of the unit test
apps enable tracing.

Signed-off-by: Konrad Sztyber <konrad.sztyber@intel.com>
Change-Id: I904dac92205aadd644100af2c38989bb7979e47c
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/7231
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Paul Luse <paul.e.luse@intel.com>

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