36049672a3
Track the relative sequence of opening and closing bands and chunks. Necessary for detecting the most recent user data during dirty shutdown recovery. Signed-off-by: Artur Paszkiewicz <artur.paszkiewicz@intel.com> Signed-off-by: Kozlowski Mateusz <mateusz.kozlowski@intel.com> Change-Id: I682030e58284d7b090667e4e5a9f4bbc7615708a Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/13366 Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Community-CI: Mellanox Build Bot Reviewed-by: Ben Walker <benjamin.walker@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com>
69 lines
1.8 KiB
C
69 lines
1.8 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright (c) Intel Corporation.
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* All rights reserved.
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*/
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#ifndef FTL_SB_COMMON_H
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#define FTL_SB_COMMON_H
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#include "spdk/stdinc.h"
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#include "utils/ftl_defs.h"
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/* Size of superblock on NV cache, make it bigger for future fields */
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#define FTL_SUPERBLOCK_SIZE (128ULL * KiB)
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#define FTL_MAGIC(a, b, c, d) \
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((UINT64_C(a) << 48) | (UINT64_C(b) << 32) | (UINT64_C(c) << 16) | \
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UINT64_C(d))
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/**
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* Magic number identifies FTL superblock
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*/
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#define FTL_SUPERBLOCK_MAGIC FTL_MAGIC(0x1410, 0x1683, 0x1920, 0x1989)
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struct ftl_superblock_gc_info {
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/* High priority band; if there's no free bands after dirty shutdown, don't restart GC from same id, or phys_id -
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* pick actual lowest validity band to avoid being stuck and try to write it to the open band.
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*/
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uint64_t band_id_high_prio;
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/* Currently relocated band (note it's just id, not seq_id ie. its actual location on disk) */
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uint64_t current_band_id;
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/* Bands are grouped together into larger reclaim units; this is the band id translated to those units */
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uint64_t band_phys_id;
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/* May be updating multiple fields at the same time, clearing/setting this marks the transaction */
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uint64_t is_valid;
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};
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struct ftl_superblock_header {
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uint64_t magic;
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uint64_t crc;
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uint64_t version;
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};
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struct ftl_superblock_md_region {
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uint32_t type;
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uint32_t version;
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uint64_t blk_offs;
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uint64_t blk_sz;
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};
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struct ftl_superblock_shm {
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/* SHM initialization completed */
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bool shm_ready;
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/* SHM status - fast restart */
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bool shm_clean;
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/* Used to continue trim after SHM recovery */
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struct {
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bool in_progress;
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uint64_t start_lba;
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uint64_t num_blocks;
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uint64_t seq_id;
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} trim;
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struct ftl_superblock_gc_info gc_info;
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};
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#endif /* FTL_SB_COMMON_H */
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