1 /*- 2 * BSD LICENSE 3 * 4 * Copyright (c) Intel Corporation. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * * Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * * Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * * Neither the name of Intel Corporation nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #ifndef SPDK_VBDEV_SPLIT_H 35 #define SPDK_VBDEV_SPLIT_H 36 37 #include "spdk/bdev_module.h" 38 39 /** 40 * Add given disk name to split config. If bdev with \c base_bdev_name name 41 * exist the split bdevs will be created right away, if not the split bdevs will 42 * be created when base bdev became be available (during examination process). 43 * 44 * \param base_bdev_name Base bdev name 45 * \param split_count number of splits to be created. 46 * \param split_size_mb size of each bdev. If 0 use base bdev size / split_count 47 * \return value >= 0 - number of splits create. Negative errno code on error. 48 */ 49 int create_vbdev_split(const char *base_bdev_name, unsigned split_count, uint64_t split_size_mb); 50 51 /** 52 * Remove all created split bdevs and split config. 53 * 54 * \param base_bdev_name base bdev name 55 * \return 0 on success or negative errno value. 56 */ 57 int spdk_vbdev_split_destruct(const char *base_bdev_name); 58 59 /** 60 * Get the spdk_bdev_part_base associated with the given split base_bdev. 61 * 62 * \param base_bdev Bdev to get the part_base from 63 * \return pointer to the associated spdk_bdev_part_base 64 * \return NULL if the base_bdev is not being split by the split module 65 */ 66 struct spdk_bdev_part_base *spdk_vbdev_split_get_part_base(struct spdk_bdev *base_bdev); 67 68 #endif /* SPDK_VBDEV_SPLIT_H */ 69