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8b7a78c728
Wait to compare and choose alternate duplicate devices until after all devices are scanned. During scanning, the first duplicate dev is kept in lvmcache, and others are kept in a new list (_found_duplicate_devs). After all devices are scanned, compare all the duplicates available for a given PVID and decide which is best. If the dev used in lvmcache is changed, drop the old dev from lvmcache entirely and rescan the replacement dev. Previously the VG metadata from the old dev was kept in lvmcache and only the dev was replaced. A new config setting devices/allow_changes_with_duplicate_pvs can be set to 0 which disallows modifying a VG or activating LVs in it when the VG contains PVs with duplicate devices. Set to 1 is the old behavior which allowed the VG to be changed. The logic for which of two devs is preferred has changed. The primary goal is to choose a device that is currently in use if the other isn't, e.g. by an active LV. . prefer dev with fs mounted if the other doesn't, else . prefer dev that is dm if the other isn't, else . prefer dev in subsystem if the other isn't If neither device is preferred by these rules, then don't change devices in lvmcache, leaving the one that was found first. The previous logic for preferring a device was: . prefer dev in subsystem if the other isn't, else . prefer dev without holders if the other has holders, else . prefer dev that is dm if the other isn't
241 lines
9.1 KiB
C
241 lines
9.1 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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#define DEFAULT_PE_ALIGN 2048
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#define DEFAULT_PE_ALIGN_OLD 128
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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 1
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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_DISABLE_AFTER_ERROR_COUNT 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_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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#define DEFAULT_RAID_MAX_IMAGES 8
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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_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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#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_POOL_METADATA_REQUIRE_SEPARATE_PVS 0
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#define DEFAULT_THIN_POOL_MAX_METADATA_SIZE (16 * 1024 * 1024) /* KB */
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#define DEFAULT_THIN_POOL_MIN_METADATA_SIZE 2048 /* KB */
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#define DEFAULT_THIN_POOL_OPTIMAL_SIZE (128 * 1024 * 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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#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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#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_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_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_MODE "writethrough"
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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_PVMETADATASIZE 255
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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_SYSLOG 1
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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 1
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#define DEFAULT_ABORT_ON_INTERNAL_ERRORS 0
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#define DEFAULT_DETECT_INTERNAL_VG_CACHE_CORRUPTION 0
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#define DEFAULT_UNITS "h"
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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 512 /* KB */
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#define DEFAULT_INTERVAL 15
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#define DEFAULT_MAX_HISTORY 100
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#define DEFAULT_MAX_ERROR_COUNT NO_DEV_ERROR_COUNT_LIMIT
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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_COMPACT_OUTPUT_COLS ""
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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_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_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_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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#endif /* _LVM_DEFAULTS_H */
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