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e59027e4f7
Create backup copies of system.devices in /etc/lvm/devices/backup named system.devices-YYYYMMDD.HHMMSS.NNNN. NNNN is the version counter from the file. Each time that an lvm command writes a new system.devices file, it also writes the same file in the backup directory. A new comment line is added to system.devices with HASH=<num> where <num> is a crc calculated from the uncommented lines in system.devices. This lets lvm detect if the file has been modified outside of lvm itself. If system.devices is edited directly, the next time a command reads the file, the crc will not match the HASH value. The command will then rewrite system.devices with the correct HASH value, and create a backup reflecting the edits. A default limit of 50 backup files is kept, configurable by lvm.conf devicesfile_backup_limit (set to 0 to disable backups.)
346 lines
13 KiB
C
346 lines
13 KiB
C
/*
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* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
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* Copyright (C) 2004-2014 Red Hat, Inc. All rights reserved.
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*
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* This file is part of LVM2.
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*
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* This copyrighted material is made available to anyone wishing to use,
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* modify, copy, or redistribute it subject to the terms and conditions
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* of the GNU Lesser General Public License v.2.1.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _LVM_DEFAULTS_H
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#define _LVM_DEFAULTS_H
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#include "device_mapper/vdo/vdo_limits.h"
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/*
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* By default the first PE is placed at 1 MiB.
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*
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* If default_data_alignment is 2, then the first PE
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* is placed at 2 * 1 MiB.
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*
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* If default_data_alignment is 3, then the first PE
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* is placed at 3 * 1 MiB.
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*/
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#define FIRST_PE_AT_ONE_MB_IN_SECTORS 2048 /* 1 MiB in 512 byte sectors */
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#define FIRST_PE_AT_ONE_MB_IN_MB 1
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#define DEFAULT_ARCHIVE_ENABLED 1
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#define DEFAULT_BACKUP_ENABLED 1
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#define DEFAULT_CACHE_FILE_PREFIX ""
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#define DEFAULT_ARCHIVE_DAYS 30
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#define DEFAULT_ARCHIVE_NUMBER 10
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#define DEFAULT_DEV_DIR "/dev"
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#define DEFAULT_PROC_DIR "/proc"
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#define DEFAULT_SYSTEM_ID_SOURCE "none"
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#define DEFAULT_OBTAIN_DEVICE_LIST_FROM_UDEV 0
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#define DEFAULT_EXTERNAL_DEVICE_INFO_SOURCE "none"
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#define DEFAULT_SYSFS_SCAN 1
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#define DEFAULT_MD_COMPONENT_DETECTION 1
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#define DEFAULT_FW_RAID_COMPONENT_DETECTION 0
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#define DEFAULT_MD_CHUNK_ALIGNMENT 1
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#define DEFAULT_IGNORE_LVM_MIRRORS 1
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#define DEFAULT_MULTIPATH_COMPONENT_DETECTION 1
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#define DEFAULT_IGNORE_SUSPENDED_DEVICES 0
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#define DEFAULT_REQUIRE_RESTOREFILE_WITH_UUID 1
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#define DEFAULT_DATA_ALIGNMENT_OFFSET_DETECTION 1
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#define DEFAULT_DATA_ALIGNMENT_DETECTION 1
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#define DEFAULT_ISSUE_DISCARDS 0
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#define DEFAULT_PV_MIN_SIZE_KB 2048
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#define DEFAULT_ALLOW_CHANGES_WITH_DUPLICATE_PVS 0
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#define DEFAULT_LOCKING_LIB "liblvm2clusterlock.so"
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#define DEFAULT_ERROR_WHEN_FULL 0
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#define DEFAULT_FALLBACK_TO_LOCAL_LOCKING 1
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#define DEFAULT_FALLBACK_TO_CLUSTERED_LOCKING 1
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#define DEFAULT_WAIT_FOR_LOCKS 1
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#define DEFAULT_LVMLOCKD_LOCK_RETRIES 3
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#define DEFAULT_LVMETAD_UPDATE_WAIT_TIME 10
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#define DEFAULT_PRIORITISE_WRITE_LOCKS 1
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#define DEFAULT_USE_MLOCKALL 0
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#define DEFAULT_METADATA_READ_ONLY 0
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#define DEFAULT_LVDISPLAY_SHOWS_FULL_DEVICE_PATH 0
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#define DEFAULT_UNKNOWN_DEVICE_NAME "[unknown]"
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#define DEFAULT_USE_AIO 1
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#define DEFAULT_SANLOCK_LV_EXTEND_MB 256
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#define DEFAULT_MIRRORLOG MIRROR_LOG_DISK
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#define DEFAULT_MIRROR_LOG_FAULT_POLICY "allocate"
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#define DEFAULT_MIRROR_IMAGE_FAULT_POLICY "remove"
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#define DEFAULT_MIRROR_MAX_IMAGES 8 /* limited by kernel DM_KCOPYD_MAX_REGIONS */
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/* Limited by kernel failed devices bitfield in superblock (raid4/5/6 MD max 253) */
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/*
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* FIXME: Increase these to 64 and further to the MD maximum
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* once the SubLVs split and name shift got enhanced
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*/
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#define DEFAULT_RAID1_MAX_IMAGES 64
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#define DEFAULT_RAID_MAX_IMAGES 64
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#define DEFAULT_ALLOCATION_STRIPE_ALL_DEVICES 0 /* Don't stripe across all devices if not -i/--stripes given */
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#define DEFAULT_RAID_FAULT_POLICY "warn"
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#define DEFAULT_DMEVENTD_RAID_LIB "libdevmapper-event-lvm2raid.so"
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#define DEFAULT_DMEVENTD_MIRROR_LIB "libdevmapper-event-lvm2mirror.so"
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#define DEFAULT_DMEVENTD_SNAPSHOT_LIB "libdevmapper-event-lvm2snapshot.so"
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#define DEFAULT_DMEVENTD_THIN_LIB "libdevmapper-event-lvm2thin.so"
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#define DEFAULT_DMEVENTD_THIN_COMMAND "lvm lvextend --use-policies"
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#define DEFAULT_DMEVENTD_VDO_LIB "libdevmapper-event-lvm2vdo.so"
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#define DEFAULT_DMEVENTD_VDO_COMMAND "lvm lvextend --use-policies"
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#define DEFAULT_DMEVENTD_MONITOR 1
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#define DEFAULT_BACKGROUND_POLLING 1
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#ifndef DMEVENTD_PATH
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# define DEFAULT_DMEVENTD_PATH ""
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#else
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# define DEFAULT_DMEVENTD_PATH DMEVENTD_PATH
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#endif
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#define DEFAULT_MAX_EXEC_ARGS 15 /* Max number of accepted options args */
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#ifdef THIN_CHECK_NEEDS_CHECK
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# define DEFAULT_THIN_CHECK_OPTION1 "-q"
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# define DEFAULT_THIN_CHECK_OPTION2 "--clear-needs-check-flag"
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# define DEFAULT_THIN_CHECK_OPTIONS_CONFIG "#S" DEFAULT_THIN_CHECK_OPTION1 "#S" DEFAULT_THIN_CHECK_OPTION2
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#else
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# define DEFAULT_THIN_CHECK_OPTION1 "-q"
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# define DEFAULT_THIN_CHECK_OPTION2 ""
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# define DEFAULT_THIN_CHECK_OPTIONS_CONFIG "#S" DEFAULT_THIN_CHECK_OPTION1
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#endif
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#define DEFAULT_THIN_REPAIR_OPTION1 ""
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#define DEFAULT_THIN_REPAIR_OPTIONS_CONFIG "#S" DEFAULT_THIN_REPAIR_OPTION1
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#define DEFAULT_THIN_RESTORE_OPTION1 ""
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#define DEFAULT_THIN_RESTORE_OPTIONS_CONFIG "#S" DEFAULT_THIN_RESTORE_OPTION1
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#define DEFAULT_THIN_POOL_METADATA_REQUIRE_SEPARATE_PVS 0
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#define DEFAULT_THIN_POOL_CROP_METADATA 0
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#define DEFAULT_THIN_POOL_MAX_METADATA_SIZE_V1_KB (UINT64_C(255) * ((1 << 14) - 64) * 4) /* KB */ /* 0x3f8040 blocks */
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#define DEFAULT_THIN_POOL_MAX_METADATA_SIZE (DM_THIN_MAX_METADATA_SIZE / 2) /* KB */
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#define DEFAULT_THIN_POOL_MIN_METADATA_SIZE 2048 /* KB */
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#define DEFAULT_THIN_POOL_OPTIMAL_METADATA_SIZE (128 * 1024) /* KB */
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#define DEFAULT_THIN_POOL_CHUNK_SIZE_POLICY "generic"
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#define DEFAULT_THIN_POOL_CHUNK_SIZE 64 /* KB */
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#define DEFAULT_THIN_POOL_CHUNK_SIZE_PERFORMANCE 512 /* KB */
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/* Chunk size big enough it no longer needs jump by power-of-2 */
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#define DEFAULT_THIN_POOL_CHUNK_SIZE_ALIGNED 1024 /* KB */
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#define DEFAULT_THIN_POOL_DISCARDS "passdown"
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#define DEFAULT_THIN_POOL_ZERO 1
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#define DEFAULT_POOL_METADATA_SPARE 1 /* thin + cache */
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#define DEFAULT_ZERO_METADATA 1 /* thin + cache */
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#ifdef CACHE_CHECK_NEEDS_CHECK
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# define DEFAULT_CACHE_CHECK_OPTION1 "-q"
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# define DEFAULT_CACHE_CHECK_OPTION2 "--clear-needs-check-flag"
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# define DEFAULT_CACHE_CHECK_OPTIONS_CONFIG "#S" DEFAULT_CACHE_CHECK_OPTION1 "#S" DEFAULT_CACHE_CHECK_OPTION2
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#else
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# define DEFAULT_CACHE_CHECK_OPTION1 "-q"
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# define DEFAULT_CACHE_CHECK_OPTION2 ""
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# define DEFAULT_CACHE_CHECK_OPTIONS_CONFIG "#S" DEFAULT_CACHE_CHECK_OPTION1
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#endif
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#define DEFAULT_CACHE_REPAIR_OPTION1 ""
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#define DEFAULT_CACHE_REPAIR_OPTIONS_CONFIG "#S" DEFAULT_CACHE_REPAIR_OPTION1
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#define DEFAULT_CACHE_RESTORE_OPTION1 ""
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#define DEFAULT_CACHE_RESTORE_OPTIONS_CONFIG "#S" DEFAULT_CACHE_RESTORE_OPTION1
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#define DEFAULT_CACHE_POOL_METADATA_REQUIRE_SEPARATE_PVS 0
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#define DEFAULT_CACHE_POOL_CHUNK_SIZE 64 /* KB */
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#define DEFAULT_CACHE_POOL_MAX_CHUNKS 1000000
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#define DEFAULT_CACHE_POOL_MIN_METADATA_SIZE 2048 /* KB */
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#define DEFAULT_CACHE_POOL_MAX_METADATA_SIZE (16 * 1024 * 1024) /* KB */
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#define DEFAULT_CACHE_POLICY "mq"
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#define DEFAULT_CACHE_METADATA_FORMAT CACHE_METADATA_FORMAT_UNSELECTED /* Autodetect */
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#define DEFAULT_CACHE_MODE "writethrough"
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/* VDO defaults */
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#define DEFAULT_VDO_USE_COMPRESSION (true)
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#define DEFAULT_VDO_USE_DEDUPLICATION (true)
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#define DEFAULT_VDO_USE_METADATA_HINTS (true)
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#define DEFAULT_VDO_MINIMUM_IO_SIZE (4096)
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#define DEFAULT_VDO_BLOCK_MAP_CACHE_SIZE_MB (DM_VDO_BLOCK_MAP_CACHE_SIZE_MINIMUM_MB)
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#define DEFAULT_VDO_BLOCK_MAP_ERA_LENGTH (DM_VDO_BLOCK_MAP_ERA_LENGTH_MAXIMUM)
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#define DEFAULT_VDO_USE_SPARSE_INDEX (false)
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#define DEFAULT_VDO_CHECK_POINT_FREQUENCY (0)
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#define DEFAULT_VDO_INDEX_MEMORY_SIZE_MB (DM_VDO_INDEX_MEMORY_SIZE_MINIMUM_MB)
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#define DEFAULT_VDO_SLAB_SIZE_MB (2 * 1024) // 2GiB ... 19 slabbits
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#define DEFAULT_VDO_ACK_THREADS (1)
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#define DEFAULT_VDO_BIO_THREADS (4)
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#define DEFAULT_VDO_BIO_ROTATION (64)
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#define DEFAULT_VDO_CPU_THREADS (2)
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#define DEFAULT_VDO_HASH_ZONE_THREADS (1)
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#define DEFAULT_VDO_LOGICAL_THREADS (1)
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#define DEFAULT_VDO_PHYSICAL_THREADS (1)
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#define DEFAULT_VDO_WRITE_POLICY "auto"
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#define DEFAULT_VDO_MAX_DISCARD (DM_VDO_MAX_DISCARD_MINIMUM)
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#define DEFAULT_VDO_FORMAT_OPTIONS_CONFIG "#S" ""
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/*
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* VDO pool will reverve some sectors in the front and the back of pool device to avoid
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* seeing same device twice in the system.
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*/
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#define DEFAULT_VDO_POOL_HEADER_SIZE_KB (512)
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#define DEFAULT_FSADM_PATH FSADM_PATH
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#define DEFAULT_UMASK 0077
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#define DEFAULT_FORMAT "lvm2"
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#define DEFAULT_STRIPESIZE 64 /* KB */
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#define DEFAULT_RECORD_LVS_HISTORY 0
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#define DEFAULT_LVS_HISTORY_RETENTION_TIME 0
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#define DEFAULT_PVMETADATAIGNORE 0
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#define DEFAULT_PVMETADATACOPIES 1
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#define DEFAULT_VGMETADATACOPIES 0
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#define DEFAULT_LABELSECTOR UINT64_C(1)
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#define DEFAULT_READ_AHEAD "auto"
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#define DEFAULT_UDEV_RULES 1
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#define DEFAULT_UDEV_SYNC 1
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#define DEFAULT_NOTIFY_DBUS 1
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#define DEFAULT_VERIFY_UDEV_OPERATIONS 0
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#define DEFAULT_RETRY_DEACTIVATION 1
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#define DEFAULT_ACTIVATION_CHECKS 0
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#define DEFAULT_EXTENT_SIZE 4096 /* In KB */
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#define DEFAULT_MAX_PV 0
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#define DEFAULT_MAX_LV 0
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#define DEFAULT_ALLOC_POLICY ALLOC_NORMAL
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#define DEFAULT_MIRROR_LOGS_REQUIRE_SEPARATE_PVS 0
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#define DEFAULT_MAXIMISE_CLING 1
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#define DEFAULT_CLUSTERED 0
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#define DEFAULT_MSG_PREFIX " "
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#define DEFAULT_CMD_NAME 0
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#define DEFAULT_OVERWRITE 0
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#ifndef DEFAULT_LOG_FACILITY
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# define DEFAULT_LOG_FACILITY LOG_USER
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#endif
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#define DEFAULT_COMMAND_LOG_REPORT 0
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#define DEFAULT_SYSLOG 0
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#define DEFAULT_VERBOSE 0
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#define DEFAULT_SILENT 0
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#define DEFAULT_LOGLEVEL 0
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#define DEFAULT_INDENT 0
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#define DEFAULT_ABORT_ON_INTERNAL_ERRORS 0
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#define DEFAULT_UNITS "r"
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#define DEFAULT_SUFFIX 1
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#define DEFAULT_HOSTTAGS 0
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#ifndef DEFAULT_SI_UNIT_CONSISTENCY
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# define DEFAULT_SI_UNIT_CONSISTENCY 1
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#endif
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#ifdef DEVMAPPER_SUPPORT
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# define DEFAULT_ACTIVATION 1
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#else
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# define DEFAULT_ACTIVATION 0
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#endif
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#define DEFAULT_RESERVED_MEMORY 8192
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#define DEFAULT_RESERVED_STACK 64 /* KB */
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#define DEFAULT_PROCESS_PRIORITY -18
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#define DEFAULT_AUTO_SET_ACTIVATION_SKIP 1
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#define DEFAULT_ACTIVATION_MODE "degraded"
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#define DEFAULT_USE_LINEAR_TARGET 1
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#define DEFAULT_STRIPE_FILLER "error"
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#define DEFAULT_RAID_REGION_SIZE 2048 /* KB */
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#define DEFAULT_INTERVAL 15
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#define DEFAULT_MAX_HISTORY 100
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#define DEFAULT_REP_COMPACT_OUTPUT 0
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#define DEFAULT_REP_ALIGNED 1
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#define DEFAULT_REP_BUFFERED 1
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#define DEFAULT_REP_COLUMNS_AS_ROWS 0
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#define DEFAULT_REP_HEADINGS 1
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#define DEFAULT_REP_PREFIXES 0
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#define DEFAULT_REP_QUOTED 1
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#define DEFAULT_REP_SEPARATOR " "
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#define DEFAULT_REP_LIST_ITEM_SEPARATOR ","
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#define DEFAULT_TIME_FORMAT "%Y-%m-%d %T %z"
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#define DEFAULT_REP_OUTPUT_FORMAT "basic"
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#define DEFAULT_COMPACT_OUTPUT_COLS ""
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#define DEFAULT_COMMAND_LOG_SELECTION "!(log_type=status && message=success)"
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#define DEFAULT_LVS_COLS "lv_name,vg_name,lv_attr,lv_size,pool_lv,origin,data_percent,metadata_percent,move_pv,mirror_log,copy_percent,convert_lv"
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#define DEFAULT_VGS_COLS "vg_name,pv_count,lv_count,snap_count,vg_attr,vg_size,vg_free"
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#define DEFAULT_PVS_COLS "pv_name,vg_name,pv_fmt,pv_attr,pv_size,pv_free"
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#define DEFAULT_SEGS_COLS "lv_name,vg_name,lv_attr,stripes,segtype,seg_size"
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#define DEFAULT_PVSEGS_COLS "pv_name,vg_name,pv_fmt,pv_attr,pv_size,pv_free,pvseg_start,pvseg_size"
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#define DEFAULT_DEVTYPES_COLS "devtype_name,devtype_max_partitions,devtype_description"
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#define DEFAULT_COMMAND_LOG_COLS "log_seq_num,log_type,log_context,log_object_type,log_object_name,log_object_id,log_object_group,log_object_group_id,log_message,log_errno,log_ret_code"
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#define DEFAULT_LVS_COLS_VERB "lv_name,vg_name,seg_count,lv_attr,lv_size,lv_major,lv_minor,lv_kernel_major,lv_kernel_minor,pool_lv,origin,data_percent,metadata_percent,move_pv,copy_percent,mirror_log,convert_lv,lv_uuid,lv_profile"
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#define DEFAULT_VGS_COLS_VERB "vg_name,vg_attr,vg_extent_size,pv_count,lv_count,snap_count,vg_size,vg_free,vg_uuid,vg_profile"
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#define DEFAULT_PVS_COLS_VERB "pv_name,vg_name,pv_fmt,pv_attr,pv_size,pv_free,dev_size,pv_uuid"
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#define DEFAULT_SEGS_COLS_VERB "lv_name,vg_name,lv_attr,seg_start,seg_size,stripes,segtype,stripesize,chunksize"
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#define DEFAULT_PVSEGS_COLS_VERB "pv_name,vg_name,pv_fmt,pv_attr,pv_size,pv_free,pvseg_start,pvseg_size,lv_name,seg_start_pe,segtype,seg_pe_ranges"
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#define DEFAULT_DEVTYPES_COLS_VERB "devtype_name,devtype_max_partitions,devtype_description"
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#define DEFAULT_VGS_COLS_FULL "vg_all"
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#define DEFAULT_PVS_COLS_FULL "pv_all"
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#define DEFAULT_LVS_COLS_FULL "lv_all"
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#define DEFAULT_PVSEGS_COLS_FULL "pvseg_all,pv_uuid,lv_uuid"
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#define DEFAULT_SEGS_COLS_FULL "seg_all,lv_uuid"
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#define DEFAULT_LVS_SORT "vg_name,lv_name"
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#define DEFAULT_VGS_SORT "vg_name"
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#define DEFAULT_PVS_SORT "pv_name"
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#define DEFAULT_SEGS_SORT "vg_name,lv_name,seg_start"
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#define DEFAULT_PVSEGS_SORT "pv_name,pvseg_start"
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#define DEFAULT_DEVTYPES_SORT "devtype_name"
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#define DEFAULT_COMMAND_LOG_SORT "log_seq_num"
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#define DEFAULT_VGS_SORT_FULL "vg_name"
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#define DEFAULT_PVS_SORT_FULL "pv_name"
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#define DEFAULT_LVS_SORT_FULL "vg_name,lv_name"
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#define DEFAULT_PVSEGS_SORT_FULL "pv_uuid,pvseg_start"
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#define DEFAULT_SEGS_SORT_FULL "lv_uuid,seg_start"
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#define DEFAULT_MIRROR_DEVICE_FAULT_POLICY "remove"
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#define DEFAULT_MIRROR_LOG_FAULT_POLICY "allocate"
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#define DEFAULT_SNAPSHOT_AUTOEXTEND_THRESHOLD 100
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#define DEFAULT_SNAPSHOT_AUTOEXTEND_PERCENT 20
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#define DEFAULT_THIN_POOL_AUTOEXTEND_THRESHOLD 100
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#define DEFAULT_THIN_POOL_AUTOEXTEND_PERCENT 20
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#define DEFAULT_VDO_POOL_AUTOEXTEND_THRESHOLD 100
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#define DEFAULT_VDO_POOL_AUTOEXTEND_PERCENT 20
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#define DEFAULT_SCAN_LVS 0
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#define DEFAULT_HINTS "all"
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#define DEFAULT_IO_MEMORY_SIZE_KB 8192
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#define DEFAULT_MD_COMPONENT_CHECKS "auto"
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#define DEFAULT_DEVICES_FILE "system.devices"
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#define DEFAULT_SEARCH_FOR_DEVNAMES "all"
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#define DEFAULT_WWIDS_FILE "/etc/multipath/wwids"
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#define PVS_ONLINE_DIR DEFAULT_RUN_DIR "/pvs_online"
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#define VGS_ONLINE_DIR DEFAULT_RUN_DIR "/vgs_online"
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#define PVS_LOOKUP_DIR DEFAULT_RUN_DIR "/pvs_lookup"
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#define DEFAULT_DEVICE_ID_SYSFS_DIR "/sys/" /* trailing / to match dm_sysfs_dir() */
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#define DEFAULT_DEVICESFILE_BACKUP_LIMIT 50
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#endif /* _LVM_DEFAULTS_H */
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