d10c618065
Fix problem introduced by increasing partition name size to 1024 bytes, which effectively made superblock bigger than one page. Due to this flushing superblock required more than one io, which in case of dirty shutdown between these ios resulted in CRC missmatch and made cache recovery impossible. Moving parts metadata to separate sections makes superblock fitting in one page, effectively solving described problem. Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
52 lines
1.5 KiB
C
52 lines
1.5 KiB
C
/*
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* Copyright(c) 2012-2018 Intel Corporation
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* SPDX-License-Identifier: BSD-3-Clause-Clear
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*/
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#ifndef __METADATA_HASH_H__
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#define __METADATA_HASH_H__
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/**
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* @file metadata_.h
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* @brief Metadata Service - Hash Implementation
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*/
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#include "../ocf_request.h"
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/**
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* @brief Metada hash elements type
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*/
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enum ocf_metadata_segment {
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metadata_segment_sb_config = 0, /*!< Super block conf */
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metadata_segment_sb_runtime, /*!< Super block runtime */
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metadata_segment_reserved, /*!< Reserved space on disk */
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metadata_segment_part_config, /*!< Part Config Metadata */
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metadata_segment_part_runtime, /*!< Part Runtime Metadata */
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metadata_segment_core_config, /*!< Core Config Metadata */
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metadata_segment_core_runtime, /*!< Core Runtime Metadata */
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metadata_segment_core_uuid, /*!< Core UUID */
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/* .... new fixed size sections go here */
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metadata_segment_fixed_size_max,
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metadata_segment_variable_size_start = metadata_segment_fixed_size_max,
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/* sections with size dependent on cache device size go here: */
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metadata_segment_cleaning = /*!< Cleaning policy */
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metadata_segment_variable_size_start,
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metadata_segment_eviction, /*!< Eviction policy */
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metadata_segment_collision, /*!< Collision */
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metadata_segment_list_info, /*!< Collision */
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metadata_segment_hash, /*!< Hash */
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/* .... new variable size sections go here */
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metadata_segment_max, /*!< MAX */
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};
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/**
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* @brief Get metadata interface implementation
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*
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* @return metadata interface
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*/
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const struct ocf_metadata_iface *metadata_hash_get_iface(void);
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#endif /* METADATA_HASH_H_ */
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