4e8e97c886
There is nothing left here, so remove it. Signed-off-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com> Change-Id: Ib947d42bc577dbebb4650b1be885e05a80f8f8cf Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/4541 Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com> Reviewed-by: Anil Veerabhadrappa <anil.veerabhadrappa@broadcom.com> Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com> Community-CI: Broadcom CI
115 lines
3.5 KiB
C
115 lines
3.5 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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#include "bdev_raid.h"
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#include "spdk/env.h"
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#include "spdk/thread.h"
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#include "spdk/string.h"
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#include "spdk/util.h"
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#include "spdk/log.h"
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struct raid5_info {
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/* The parent raid bdev */
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struct raid_bdev *raid_bdev;
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/* Number of data blocks in a stripe (without parity) */
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uint64_t stripe_blocks;
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/* Number of stripes on this array */
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uint64_t total_stripes;
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};
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static inline uint8_t
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raid5_stripe_data_chunks_num(const struct raid_bdev *raid_bdev)
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{
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return raid_bdev->num_base_bdevs - raid_bdev->module->base_bdevs_max_degraded;
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}
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static void
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raid5_submit_rw_request(struct raid_bdev_io *raid_io)
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{
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raid_bdev_io_complete(raid_io, SPDK_BDEV_IO_STATUS_FAILED);
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}
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static int
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raid5_start(struct raid_bdev *raid_bdev)
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{
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uint64_t min_blockcnt = UINT64_MAX;
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struct raid_base_bdev_info *base_info;
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struct raid5_info *r5info;
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r5info = calloc(1, sizeof(*r5info));
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if (!r5info) {
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SPDK_ERRLOG("Failed to allocate r5info\n");
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return -ENOMEM;
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}
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r5info->raid_bdev = raid_bdev;
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RAID_FOR_EACH_BASE_BDEV(raid_bdev, base_info) {
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min_blockcnt = spdk_min(min_blockcnt, base_info->bdev->blockcnt);
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}
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r5info->total_stripes = min_blockcnt / raid_bdev->strip_size;
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r5info->stripe_blocks = raid_bdev->strip_size * raid5_stripe_data_chunks_num(raid_bdev);
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raid_bdev->bdev.blockcnt = r5info->stripe_blocks * r5info->total_stripes;
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raid_bdev->bdev.optimal_io_boundary = r5info->stripe_blocks;
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raid_bdev->bdev.split_on_optimal_io_boundary = true;
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raid_bdev->module_private = r5info;
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return 0;
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}
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static void
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raid5_stop(struct raid_bdev *raid_bdev)
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{
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struct raid5_info *r5info = raid_bdev->module_private;
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free(r5info);
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}
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static struct raid_bdev_module g_raid5_module = {
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.level = RAID5,
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.base_bdevs_min = 3,
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.base_bdevs_max_degraded = 1,
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.start = raid5_start,
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.stop = raid5_stop,
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.submit_rw_request = raid5_submit_rw_request,
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};
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RAID_MODULE_REGISTER(&g_raid5_module)
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SPDK_LOG_REGISTER_COMPONENT(bdev_raid5)
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