6322b4ce40
The size of raid name inside raid superblock structure is increased to 64 chars to let the creation of raid bdev with longer name. Signed-off-by: Damiano Cipriani <damiano.cipriani@suse.com>
99 lines
3.0 KiB
C
99 lines
3.0 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright (C) 2022 Intel Corporation.
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* All rights reserved.
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*/
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#ifndef SPDK_BDEV_RAID_SB_H_
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#define SPDK_BDEV_RAID_SB_H_
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#include "spdk/stdinc.h"
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#include "spdk/util.h"
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#include "spdk/uuid.h"
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#define RAID_BDEV_SB_VERSION_MAJOR 1
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#define RAID_BDEV_SB_VERSION_MINOR 0
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#define RAID_BDEV_SB_NAME_SIZE 64
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#define RAID_BDEV_SB_MAX_LENGTH \
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SPDK_ALIGN_CEIL((sizeof(struct raid_bdev_superblock) + UINT8_MAX * sizeof(struct raid_bdev_sb_base_bdev)), 0x1000)
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enum raid_bdev_sb_base_bdev_state {
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RAID_SB_BASE_BDEV_MISSING = 0,
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RAID_SB_BASE_BDEV_CONFIGURED = 1,
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RAID_SB_BASE_BDEV_FAILED = 2,
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RAID_SB_BASE_BDEV_SPARE = 3,
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};
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struct raid_bdev_sb_base_bdev {
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/* uuid of the base bdev */
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struct spdk_uuid uuid;
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/* offset in blocks from base device start to the start of raid data area */
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uint64_t data_offset;
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/* size in blocks of the base device raid data area */
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uint64_t data_size;
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/* state of the base bdev */
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uint32_t state;
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/* feature/status flags */
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uint32_t flags;
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/* slot number of this base bdev in the raid */
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uint8_t slot;
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uint8_t reserved[23];
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};
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SPDK_STATIC_ASSERT(sizeof(struct raid_bdev_sb_base_bdev) == 64, "incorrect size");
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struct raid_bdev_superblock {
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#define RAID_BDEV_SB_SIG "SPDKRAID"
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uint8_t signature[8];
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struct {
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/* incremented when a breaking change in the superblock structure is made */
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uint16_t major;
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/* incremented for changes in the superblock that are backward compatible */
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uint16_t minor;
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} version;
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/* length in bytes of the entire superblock */
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uint32_t length;
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/* crc32c checksum of the entire superblock */
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uint32_t crc;
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/* feature/status flags */
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uint32_t flags;
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/* unique id of the raid bdev */
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struct spdk_uuid uuid;
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/* name of the raid bdev */
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uint8_t name[RAID_BDEV_SB_NAME_SIZE];
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/* size of the raid bdev in blocks */
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uint64_t raid_size;
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/* the raid bdev block size - must be the same for all base bdevs */
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uint32_t block_size;
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/* the raid level */
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uint32_t level;
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/* strip (chunk) size in blocks */
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uint32_t strip_size;
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/* state of the raid */
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uint32_t state;
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/* sequence number, incremented on every superblock update */
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uint64_t seq_number;
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/* number of raid base devices */
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uint8_t num_base_bdevs;
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uint8_t reserved[86];
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/* size of the base bdevs array */
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uint8_t base_bdevs_size;
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/* array of base bdev descriptors */
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struct raid_bdev_sb_base_bdev base_bdevs[];
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};
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SPDK_STATIC_ASSERT(sizeof(struct raid_bdev_superblock) == 224, "incorrect size");
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typedef void (*raid_bdev_load_sb_cb)(const struct raid_bdev_superblock *sb, int status, void *ctx);
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typedef void (*raid_bdev_save_sb_cb)(int status, void *ctx);
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int raid_bdev_load_base_bdev_superblock(struct spdk_bdev_desc *desc, struct spdk_io_channel *ch,
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raid_bdev_load_sb_cb cb, void *cb_ctx);
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int raid_bdev_save_base_bdev_superblock(struct spdk_bdev_desc *desc, struct spdk_io_channel *ch,
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const struct raid_bdev_superblock *sb, raid_bdev_save_sb_cb cb, void *cb_ctx);
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void raid_bdev_sb_update_crc(struct raid_bdev_superblock *sb);
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#endif /* SPDK_BDEV_RAID_SB_H_ */
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