3fb4a66d7d
This module simply sits on another virtual bdev and adds a simulated average and p99 latency to that drive. Change-Id: Ie9fc91e27585fd0636cb7dc845cb41744bf24625 Signed-off-by: Seth Howell <seth.howell@intel.com> Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/453594 Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com> Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com> Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
67 lines
2.6 KiB
C
67 lines
2.6 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright (c) Intel Corporation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef SPDK_VBDEV_DELAY_H
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#define SPDK_VBDEV_DELAY_H
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#include "spdk/stdinc.h"
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#include "spdk/bdev.h"
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#include "spdk/bdev_module.h"
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/**
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* Create new delay bdev.
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*
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* \param bdev_name Bdev on which delay vbdev will be created.
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* \param vbdev_name Name of the delay bdev.
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* \param avg_read_latency Desired typical read latency.
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* \param p99_read_latency Desired p99 read latency
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* \param avg_write_latency Desired typical write latency.
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* \param p99_write_latency Desired p99 write latency
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* \return 0 on success, other on failure.
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*/
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int create_delay_disk(const char *bdev_name, const char *vbdev_name, uint64_t avg_read_latency,
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uint64_t p99_read_latency, uint64_t avg_write_latency, uint64_t p99_write_latency);
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/**
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* Delete delay bdev.
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*
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* \param bdev Pointer to delay bdev.
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* \param cb_fn Function to call after deletion.
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* \param cb_arg Argument to pass to cb_fn.
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*/
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void delete_delay_disk(struct spdk_bdev *bdev, spdk_bdev_unregister_cb cb_fn,
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void *cb_arg);
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#endif /* SPDK_VBDEV_DELAY_H */
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