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lvm2/lib/config/config_settings.h
Jonathan Brassow d5896f0afd Mirror: Fix hangs and lock-ups caused by attempting label reads of mirrors 
There is a problem with the way mirrors have been designed to handle
failures that is resulting in stuck LVM processes and hung I/O.  When
mirrors encounter a write failure, they block I/O and notify userspace
to reconfigure the mirror to remove failed devices.  This process is
open to a couple races:
1) Any LVM process other than the one that is meant to deal with the
mirror failure can attempt to read the mirror, fail, and block other
LVM commands (including the repair command) from proceeding due to
holding a lock on the volume group.
2) If there are multiple mirrors that suffer a failure in the same
volume group, a repair can block while attempting to read the LVM
label from one mirror while trying to repair the other.

Mitigation of these races has been attempted by disallowing label reading
of mirrors that are either suspended or are indicated as blocking by
the kernel.  While this has closed the window of opportunity for hitting
the above problems considerably, it hasn't closed it completely.  This is
because it is still possible to start an LVM command, read the status of
the mirror as healthy, and then perform the read for the label at the
moment after a the failure is discovered by the kernel.

I can see two solutions to this problem:
1) Allow users to configure whether mirrors can be candidates for LVM
labels (i.e. whether PVs can be created on mirror LVs).  If the user
chooses to allow label scanning of mirror LVs, it will be at the expense
of a possible hang in I/O or LVM processes.
2) Instrument a way to allow asynchronous label reading - allowing
blocked label reads to be ignored while continuing to process the LVM
command.  This would action would allow LVM commands to continue even
though they would have otherwise blocked trying to read a mirror.  They
can then release their lock and allow a repair command to commence.  In
the event of #2 above, the repair command already in progress can continue
and repair the failed mirror.

This patch brings solution #1.  If solution #2 is developed later on, the
configuration option created in #1 can be negated - allowing mirrors to
be scanned for labels by default once again.
2013-10-22 19:14:33 -05:00

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/*
* Copyright (C) 2013 Red Hat, Inc. All rights reserved.
*
* This file is part of LVM2.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
* of the GNU Lesser General Public License v.2.1.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
* MACROS:
* cfg_section(id, name, parent, flags, since_version, comment)
* cfg(id, name, parent, flags, type, default_value, since_version, comment)
* cfg_array(id, name, parent, flags, types, default_value, since_version, comment)
*
* VARIABLES:
* cfg_section: define a new configuration section
* cfg: define a new configuration setting of a simple type
* cfg_array: define a new configuration setting of array type
*
* id: unique identifier
* name: configuration node name
* parent: id of parent configuration node
* flags: configuration item flags:
* CFG_NAME_VARIABLE - configuration node name is variable
* CFG_ALLOW_EMPTY - node value can be emtpy
* CFG_ADVANCED - this node belongs to advanced config set
* CFG_UNSUPPORTED - this node belongs to unsupported config set
* CFG_PROFILABLE - this node is customizable by a profile
* type: allowed type for the value of simple configuation setting, one of:
* CFG_TYPE_BOOL
* CFG_TYPE_INT
* CFG_TYPE_FLOAT
* CFG_TYPE_STRING
* types: allowed types for the values of array configuration setting
* (use logical "OR" to define more than one allowed type,
* e.g. CFG_TYPE_STRING | CFG_TYPE_INT)
* default_value: default value of type 'type' for the configuration node,
* if this is an array with several 'types' defined then
* default value is a string where each string representation
* of each value is prefixed by '#X' where X is one of:
* 'B' for boolean value
* 'I' for integer value
* 'F' for float value
* 'S' for string value
* '#' for the '#' character itself
* For example, "#Sfd#I16" means default value [ "fd", 16 ].
* comment: brief comment used in configuration dumps
* since_version: the version this configuration node first appeared in (be sure
* that parent nodes are consistent with versioning, no check done
* if parent node is older or the same age as any child node!)
*/
cfg_section(root_CFG_SECTION, "(root)", root_CFG_SECTION, 0, vsn(0, 0, 0), NULL)
cfg_section(config_CFG_SECTION, "config", root_CFG_SECTION, 0, vsn(2, 2, 99), "Configuration handling.")
cfg_section(devices_CFG_SECTION, "devices", root_CFG_SECTION, 0, vsn(1, 0, 0), NULL)
cfg_section(allocation_CFG_SECTION, "allocation", root_CFG_SECTION, CFG_PROFILABLE, vsn(2, 2, 77), NULL)
cfg_section(log_CFG_SECTION, "log", root_CFG_SECTION, 0, vsn(1, 0, 0), NULL)
cfg_section(backup_CFG_SECTION, "backup", root_CFG_SECTION, 0, vsn(1, 0, 0), NULL)
cfg_section(shell_CFG_SECTION, "shell", root_CFG_SECTION, 0, vsn(1, 0, 0), NULL)
cfg_section(global_CFG_SECTION, "global", root_CFG_SECTION, 0, vsn(1, 0, 0), NULL)
cfg_section(activation_CFG_SECTION, "activation", root_CFG_SECTION, CFG_PROFILABLE, vsn(1, 0, 0), NULL)
cfg_section(metadata_CFG_SECTION, "metadata", root_CFG_SECTION, CFG_ADVANCED, vsn(1, 0, 0), NULL)
cfg_section(report_CFG_SECTION, "report", root_CFG_SECTION, CFG_ADVANCED, vsn(1, 0, 0), NULL)
cfg_section(dmeventd_CFG_SECTION, "dmeventd", root_CFG_SECTION, 0, vsn(1, 2, 3), NULL)
cfg_section(tags_CFG_SECTION, "tags", root_CFG_SECTION, 0, vsn(1, 0, 18), NULL)
cfg(config_checks_CFG, "checks", config_CFG_SECTION, 0, CFG_TYPE_BOOL, 1, vsn(2, 2, 99), "Configuration tree check on each LVM command execution.")
cfg(config_abort_on_errors_CFG, "abort_on_errors", config_CFG_SECTION, 0, CFG_TYPE_BOOL, 0, vsn(2,2,99), "Abort LVM command execution if configuration is invalid.")
cfg(config_profile_dir_CFG, "profile_dir", config_CFG_SECTION, 0, CFG_TYPE_STRING, 0, vsn(2, 2, 99), "Directory with configuration profiles.")
cfg(devices_dir_CFG, "dir", devices_CFG_SECTION, 0, CFG_TYPE_STRING, DEFAULT_DEV_DIR, vsn(1, 0, 0), NULL)
cfg_array(devices_scan_CFG, "scan", devices_CFG_SECTION, 0, CFG_TYPE_STRING, "#S/dev", vsn(1, 0, 0), NULL)
cfg_array(devices_loopfiles_CFG, "loopfiles", devices_CFG_SECTION, 0, CFG_TYPE_STRING, NULL, vsn(1, 2, 0), NULL)
cfg(devices_obtain_device_list_from_udev_CFG, "obtain_device_list_from_udev", devices_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_OBTAIN_DEVICE_LIST_FROM_UDEV, vsn(2, 2, 85), NULL)
cfg_array(devices_preferred_names_CFG, "preferred_names", devices_CFG_SECTION, CFG_ALLOW_EMPTY, CFG_TYPE_STRING, NULL, vsn(1, 2, 19), NULL)
cfg_array(devices_filter_CFG, "filter", devices_CFG_SECTION, 0, CFG_TYPE_STRING, NULL, vsn(1, 0, 0), NULL)
cfg_array(devices_global_filter_CFG, "global_filter", devices_CFG_SECTION, 0, CFG_TYPE_STRING, NULL, vsn(2, 2, 98), NULL)
cfg(devices_cache_CFG, "cache", devices_CFG_SECTION, 0, CFG_TYPE_STRING, NULL, vsn(1, 0, 0), NULL)
cfg(devices_cache_dir_CFG, "cache_dir", devices_CFG_SECTION, 0, CFG_TYPE_STRING, NULL, vsn(1, 2, 19), NULL)
cfg(devices_cache_file_prefix_CFG, "cache_file_prefix", devices_CFG_SECTION, 0, CFG_TYPE_STRING, NULL, vsn(1, 2, 19), NULL)
cfg(devices_write_cache_state_CFG, "write_cache_state", devices_CFG_SECTION, 0, CFG_TYPE_BOOL, 1, vsn(1, 0, 0), NULL)
cfg_array(devices_types_CFG, "types", devices_CFG_SECTION, 0, CFG_TYPE_INT | CFG_TYPE_STRING, NULL, vsn(1, 0, 0), NULL)
cfg(devices_sysfs_scan_CFG, "sysfs_scan", devices_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_SYSFS_SCAN, vsn(1, 0, 8), NULL)
cfg(devices_multipath_component_detection_CFG, "multipath_component_detection", devices_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_MULTIPATH_COMPONENT_DETECTION, vsn(2, 2, 89), NULL)
cfg(devices_md_component_detection_CFG, "md_component_detection", devices_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_MD_COMPONENT_DETECTION, vsn(1, 0, 18), NULL)
cfg(devices_md_chunk_alignment_CFG, "md_chunk_alignment", devices_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_MD_CHUNK_ALIGNMENT, vsn(2, 2, 48), NULL)
cfg(devices_default_data_alignment_CFG, "default_data_alignment", devices_CFG_SECTION, 0, CFG_TYPE_INT, DEFAULT_DATA_ALIGNMENT, vsn(2, 2, 75), NULL)
cfg(devices_data_alignment_detection_CFG, "data_alignment_detection", devices_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_DATA_ALIGNMENT_DETECTION, vsn(2, 2, 51), NULL)
cfg(devices_data_alignment_CFG, "data_alignment", devices_CFG_SECTION, 0, CFG_TYPE_INT, 0, vsn(2, 2, 45), NULL)
cfg(devices_data_alignment_offset_detection_CFG, "data_alignment_offset_detection", devices_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_DATA_ALIGNMENT_OFFSET_DETECTION, vsn(2, 2, 50), NULL)
cfg(devices_ignore_suspended_devices_CFG, "ignore_suspended_devices", devices_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_IGNORE_SUSPENDED_DEVICES, vsn(1, 2, 19), NULL)
cfg(devices_ignore_lvm_mirrors_CFG, "ignore_lvm_mirrors", devices_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_IGNORE_LVM_MIRRORS, vsn(2, 2, 104), NULL)
cfg(devices_disable_after_error_count_CFG, "disable_after_error_count", devices_CFG_SECTION, 0, CFG_TYPE_INT, DEFAULT_DISABLE_AFTER_ERROR_COUNT, vsn(2, 2, 75), NULL)
cfg(devices_require_restorefile_with_uuid_CFG, "require_restorefile_with_uuid", devices_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_REQUIRE_RESTOREFILE_WITH_UUID, vsn(2, 2, 73), NULL)
cfg(devices_pv_min_size_CFG, "pv_min_size", devices_CFG_SECTION, 0, CFG_TYPE_INT, DEFAULT_PV_MIN_SIZE_KB, vsn(2, 2, 85), NULL)
cfg(devices_issue_discards_CFG, "issue_discards", devices_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_ISSUE_DISCARDS, vsn(2, 2, 85), NULL)
cfg_array(allocation_cling_tag_list_CFG, "cling_tag_list", allocation_CFG_SECTION, 0, CFG_TYPE_STRING, NULL, vsn(2, 2, 77), NULL)
cfg(allocation_maximise_cling_CFG, "maximise_cling", allocation_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_MAXIMISE_CLING, vsn(2, 2, 85), NULL)
cfg(allocation_mirror_logs_require_separate_pvs_CFG, "mirror_logs_require_separate_pvs", allocation_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_MIRROR_LOGS_REQUIRE_SEPARATE_PVS, vsn(2, 2, 85), NULL)
cfg(allocation_thin_pool_metadata_require_separate_pvs_CFG, "thin_pool_metadata_require_separate_pvs", allocation_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_THIN_POOL_METADATA_REQUIRE_SEPARATE_PVS, vsn(2, 2, 89), NULL)
cfg(allocation_thin_pool_zero_CFG, "thin_pool_zero", allocation_CFG_SECTION, CFG_PROFILABLE, CFG_TYPE_BOOL, DEFAULT_THIN_POOL_ZERO, vsn(2, 2, 99), NULL)
cfg(allocation_thin_pool_discards_CFG, "thin_pool_discards", allocation_CFG_SECTION, CFG_PROFILABLE, CFG_TYPE_STRING, DEFAULT_THIN_POOL_DISCARDS, vsn(2, 2, 99), NULL)
cfg(allocation_thin_pool_chunk_size_policy_CFG, "thin_pool_chunk_size_policy", allocation_CFG_SECTION, CFG_PROFILABLE, CFG_TYPE_STRING, DEFAULT_THIN_POOL_CHUNK_SIZE_POLICY, vsn(2, 2, 101), NULL)
cfg(allocation_thin_pool_chunk_size_CFG, "thin_pool_chunk_size", allocation_CFG_SECTION, CFG_PROFILABLE, CFG_TYPE_INT, 0, vsn(2, 2, 99), NULL)
cfg(log_verbose_CFG, "verbose", log_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_VERBOSE, vsn(1, 0, 0), NULL)
cfg(log_silent_CFG, "silent", log_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_SILENT, vsn(2, 2, 98), NULL)
cfg(log_syslog_CFG, "syslog", log_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_SYSLOG, vsn(1, 0, 0), NULL)
cfg(log_file_CFG, "file", log_CFG_SECTION, 0, CFG_TYPE_STRING, NULL, vsn(1, 0, 0), NULL)
cfg(log_overwrite_CFG, "overwrite", log_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_OVERWRITE, vsn(1, 0, 0), NULL)
cfg(log_level_CFG, "level", log_CFG_SECTION, 0, CFG_TYPE_INT, DEFAULT_LOGLEVEL, vsn(1, 0, 0), NULL)
cfg(log_indent_CFG, "indent", log_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_INDENT, vsn(1, 0, 0), NULL)
cfg(log_command_names_CFG, "command_names", log_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_CMD_NAME, vsn(1, 0, 0), NULL)
cfg(log_prefix_CFG, "prefix", log_CFG_SECTION, CFG_ALLOW_EMPTY, CFG_TYPE_STRING, DEFAULT_MSG_PREFIX, vsn(1, 0, 0), NULL)
cfg(log_activation_CFG, "activation", log_CFG_SECTION, 0, CFG_TYPE_BOOL, 0, vsn(1, 0, 0), NULL)
cfg(log_activate_file_CFG, "activate_file", log_CFG_SECTION, 0, CFG_TYPE_STRING, NULL, vsn(1, 0, 0), NULL)
cfg_array(log_debug_classes_CFG, "debug_classes", log_CFG_SECTION, CFG_ALLOW_EMPTY, CFG_TYPE_STRING, "#Smemory#Sdevices#Sactivation#Sallocation#Slvmetad#Smetadata#Scache#Slocking", vsn(2, 2, 99), NULL)
cfg(backup_backup_CFG, "backup", backup_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_BACKUP_ENABLED, vsn(1, 0, 0), NULL)
cfg(backup_backup_dir_CFG, "backup_dir", backup_CFG_SECTION, 0, CFG_TYPE_STRING, NULL, vsn(1, 0, 0), NULL)
cfg(backup_archive_CFG, "archive", backup_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_ARCHIVE_ENABLED, vsn(1, 0, 0), NULL)
cfg(backup_archive_dir_CFG, "archive_dir", backup_CFG_SECTION, 0, CFG_TYPE_STRING, NULL, vsn(1, 0, 0), NULL)
cfg(backup_retain_min_CFG, "retain_min", backup_CFG_SECTION, 0, CFG_TYPE_INT, DEFAULT_ARCHIVE_NUMBER, vsn(1, 0, 0), NULL)
cfg(backup_retain_days_CFG, "retain_days", backup_CFG_SECTION, 0, CFG_TYPE_INT, DEFAULT_ARCHIVE_DAYS, vsn(1, 0, 0), NULL)
cfg(shell_history_size_CFG, "history_size", shell_CFG_SECTION, 0, CFG_TYPE_INT, DEFAULT_MAX_HISTORY, vsn(1, 0, 0), NULL)
cfg(global_umask_CFG, "umask", global_CFG_SECTION, 0, CFG_TYPE_INT, DEFAULT_UMASK, vsn(1, 0, 0), NULL)
cfg(global_test_CFG, "test", global_CFG_SECTION, 0, CFG_TYPE_BOOL, 0, vsn(1, 0, 0), NULL)
cfg(global_units_CFG, "units", global_CFG_SECTION, 0, CFG_TYPE_STRING, DEFAULT_UNITS, vsn(1, 0, 0), NULL)
cfg(global_si_unit_consistency_CFG, "si_unit_consistency", global_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_SI_UNIT_CONSISTENCY, vsn(2, 2, 54), NULL)
cfg(global_activation_CFG, "activation", global_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_ACTIVATION, vsn(1, 0, 0), NULL)
cfg(global_suffix_CFG, "suffix", global_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_SUFFIX, vsn(1, 0, 0), NULL)
cfg(global_fallback_to_lvm1_CFG, "fallback_to_lvm1", global_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_FALLBACK_TO_LVM1, vsn(1, 0, 18), NULL)
cfg(global_format_CFG, "format", global_CFG_SECTION, 0, CFG_TYPE_STRING, DEFAULT_FORMAT, vsn(1, 0, 0), NULL)
cfg_array(global_format_libraries_CFG, "format_libraries", global_CFG_SECTION, 0, CFG_TYPE_STRING, NULL, vsn(1, 0, 0), NULL)
cfg_array(global_segment_libraries_CFG, "segment_libraries", global_CFG_SECTION, 0, CFG_TYPE_STRING, NULL, vsn(1, 0, 18), NULL)
cfg(global_proc_CFG, "proc", global_CFG_SECTION, 0, CFG_TYPE_STRING, DEFAULT_PROC_DIR, vsn(1, 0, 0), NULL)
cfg(global_locking_type_CFG, "locking_type", global_CFG_SECTION, 0, CFG_TYPE_INT, 1, vsn(1, 0, 0), NULL)
cfg(global_wait_for_locks_CFG, "wait_for_locks", global_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_WAIT_FOR_LOCKS, vsn(2, 2, 50), NULL)
cfg(global_fallback_to_clustered_locking_CFG, "fallback_to_clustered_locking", global_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_FALLBACK_TO_CLUSTERED_LOCKING, vsn(2, 2, 42), NULL)
cfg(global_fallback_to_local_locking_CFG, "fallback_to_local_locking", global_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_FALLBACK_TO_LOCAL_LOCKING, vsn(2, 2, 42), NULL)
cfg(global_locking_dir_CFG, "locking_dir", global_CFG_SECTION, 0, CFG_TYPE_STRING, DEFAULT_LOCK_DIR, vsn(1, 0, 0), NULL)
cfg(global_prioritise_write_locks_CFG, "prioritise_write_locks", global_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_PRIORITISE_WRITE_LOCKS, vsn(2, 2, 52), NULL)
cfg(global_library_dir_CFG, "library_dir", global_CFG_SECTION, 0, CFG_TYPE_STRING, NULL, vsn(1, 0, 0), NULL)
cfg(global_locking_library_CFG, "locking_library", global_CFG_SECTION, CFG_ALLOW_EMPTY, CFG_TYPE_STRING, NULL, vsn(1, 0, 0), NULL)
cfg(global_abort_on_internal_errors_CFG, "abort_on_internal_errors", global_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_ABORT_ON_INTERNAL_ERRORS, vsn(2, 2, 57), NULL)
cfg(global_detect_internal_vg_cache_corruption_CFG, "detect_internal_vg_cache_corruption", global_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_DETECT_INTERNAL_VG_CACHE_CORRUPTION, vsn(2, 2, 96), NULL)
cfg(global_metadata_read_only_CFG, "metadata_read_only", global_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_METADATA_READ_ONLY, vsn(2, 2, 75), NULL)
cfg(global_mirror_segtype_default_CFG, "mirror_segtype_default", global_CFG_SECTION, 0, CFG_TYPE_STRING, DEFAULT_MIRROR_SEGTYPE, vsn(2, 2, 87), NULL)
cfg(global_raid10_segtype_default_CFG, "raid10_segtype_default", global_CFG_SECTION, 0, CFG_TYPE_STRING, DEFAULT_RAID10_SEGTYPE, vsn(2, 2, 99), NULL)
cfg(global_lvdisplay_shows_full_device_path_CFG, "lvdisplay_shows_full_device_path", global_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_LVDISPLAY_SHOWS_FULL_DEVICE_PATH, vsn(2, 2, 89), NULL)
cfg(global_use_lvmetad_CFG, "use_lvmetad", global_CFG_SECTION, 0, CFG_TYPE_BOOL, 0, vsn(2, 2, 93), NULL)
cfg(global_thin_check_executable_CFG, "thin_check_executable", global_CFG_SECTION, CFG_ALLOW_EMPTY, CFG_TYPE_STRING, THIN_CHECK_CMD, vsn(2, 2, 94), NULL)
cfg_array(global_thin_check_options_CFG, "thin_check_options", global_CFG_SECTION, 0, CFG_TYPE_STRING, "#S" DEFAULT_THIN_CHECK_OPTIONS, vsn(2, 2, 96), NULL)
cfg_array(global_thin_disabled_features_CFG, "thin_disabled_features", global_CFG_SECTION, 0, CFG_TYPE_STRING, "#S", vsn(2, 2, 99), NULL)
cfg(global_thin_dump_executable_CFG, "thin_dump_executable", global_CFG_SECTION, CFG_ALLOW_EMPTY, CFG_TYPE_STRING, THIN_DUMP_CMD, vsn(2, 2, 100), NULL)
cfg(global_thin_repair_executable_CFG, "thin_repair_executable", global_CFG_SECTION, CFG_ALLOW_EMPTY, CFG_TYPE_STRING, THIN_REPAIR_CMD, vsn(2, 2, 100), NULL)
cfg_array(global_thin_repair_options_CFG, "thin_repair_options", global_CFG_SECTION, 0, CFG_TYPE_STRING, "#S" DEFAULT_THIN_REPAIR_OPTIONS, vsn(2, 2, 100), NULL)
cfg(activation_checks_CFG, "checks", activation_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_ACTIVATION_CHECKS, vsn(2, 2, 86), NULL)
cfg(activation_udev_sync_CFG, "udev_sync", activation_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_UDEV_SYNC, vsn(2, 2, 51), NULL)
cfg(activation_udev_rules_CFG, "udev_rules", activation_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_UDEV_RULES, vsn(2, 2, 57), NULL)
cfg(activation_verify_udev_operations_CFG, "verify_udev_operations", activation_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_VERIFY_UDEV_OPERATIONS, vsn(2, 2, 86), NULL)
cfg(activation_retry_deactivation_CFG, "retry_deactivation", activation_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_RETRY_DEACTIVATION, vsn(2, 2, 89), NULL)
cfg(activation_missing_stripe_filler_CFG, "missing_stripe_filler", activation_CFG_SECTION, 0, CFG_TYPE_STRING, DEFAULT_STRIPE_FILLER, vsn(1, 0, 0), NULL)
cfg(activation_use_linear_target_CFG, "use_linear_target", activation_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_USE_LINEAR_TARGET, vsn(2, 2, 89), NULL)
cfg(activation_reserved_stack_CFG, "reserved_stack", activation_CFG_SECTION, 0, CFG_TYPE_INT, DEFAULT_RESERVED_STACK, vsn(1, 0, 0), NULL)
cfg(activation_reserved_memory_CFG, "reserved_memory", activation_CFG_SECTION, 0, CFG_TYPE_INT, DEFAULT_RESERVED_MEMORY, vsn(1, 0, 0), NULL)
cfg(activation_process_priority_CFG, "process_priority", activation_CFG_SECTION, 0, CFG_TYPE_INT, DEFAULT_PROCESS_PRIORITY, vsn(1, 0, 0), NULL)
cfg_array(activation_volume_list_CFG, "volume_list", activation_CFG_SECTION, CFG_ALLOW_EMPTY, CFG_TYPE_STRING, NULL, vsn(1, 0, 18), NULL)
cfg_array(activation_auto_activation_volume_list_CFG, "auto_activation_volume_list", activation_CFG_SECTION, CFG_ALLOW_EMPTY, CFG_TYPE_STRING, NULL, vsn(2, 2, 97), NULL)
cfg_array(activation_read_only_volume_list_CFG, "read_only_volume_list", activation_CFG_SECTION, CFG_ALLOW_EMPTY, CFG_TYPE_STRING, NULL, vsn(2, 2, 89), NULL)
cfg(activation_mirror_region_size_CFG, "mirror_region_size", activation_CFG_SECTION, 0, CFG_TYPE_INT, DEFAULT_RAID_REGION_SIZE, vsn(1, 0, 0), NULL)
cfg(activation_raid_region_size_CFG, "raid_region_size", activation_CFG_SECTION, 0, CFG_TYPE_INT, DEFAULT_RAID_REGION_SIZE, vsn(2, 2, 99), NULL)
cfg(activation_readahead_CFG, "readahead", activation_CFG_SECTION, 0, CFG_TYPE_STRING, DEFAULT_READ_AHEAD, vsn(1, 0, 23), NULL)
cfg(activation_raid_fault_policy_CFG, "raid_fault_policy", activation_CFG_SECTION, 0, CFG_TYPE_STRING, DEFAULT_RAID_FAULT_POLICY, vsn(2, 2, 89), NULL)
cfg(activation_mirror_device_fault_policy_CFG, "mirror_device_fault_policy", activation_CFG_SECTION, 0, CFG_TYPE_STRING, DEFAULT_MIRROR_DEVICE_FAULT_POLICY, vsn(1, 2, 10), NULL)
cfg(activation_mirror_log_fault_policy_CFG, "mirror_log_fault_policy", activation_CFG_SECTION, 0, CFG_TYPE_STRING, DEFAULT_MIRROR_LOG_FAULT_POLICY, vsn(1, 2, 18), NULL)
cfg(activation_mirror_image_fault_policy_CFG, "mirror_image_fault_policy", activation_CFG_SECTION, 0, CFG_TYPE_STRING, NULL, vsn(2, 2, 57), NULL)
cfg(activation_snapshot_autoextend_threshold_CFG, "snapshot_autoextend_threshold", activation_CFG_SECTION, 0, CFG_TYPE_INT, DEFAULT_SNAPSHOT_AUTOEXTEND_THRESHOLD, vsn(2, 2, 75), NULL)
cfg(activation_snapshot_autoextend_percent_CFG, "snapshot_autoextend_percent", activation_CFG_SECTION, 0, CFG_TYPE_INT, DEFAULT_SNAPSHOT_AUTOEXTEND_PERCENT, vsn(2, 2, 75), NULL)
cfg(activation_thin_pool_autoextend_threshold_CFG, "thin_pool_autoextend_threshold", activation_CFG_SECTION, CFG_PROFILABLE, CFG_TYPE_INT, DEFAULT_THIN_POOL_AUTOEXTEND_THRESHOLD, vsn(2, 2, 89), NULL)
cfg(activation_thin_pool_autoextend_percent_CFG, "thin_pool_autoextend_percent", activation_CFG_SECTION, CFG_PROFILABLE, CFG_TYPE_INT, DEFAULT_THIN_POOL_AUTOEXTEND_PERCENT, vsn(2, 2, 89), NULL)
cfg_array(activation_mlock_filter_CFG, "mlock_filter", activation_CFG_SECTION, 0, CFG_TYPE_STRING, NULL, vsn(2, 2, 62), NULL)
cfg(activation_use_mlockall_CFG, "use_mlockall", activation_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_USE_MLOCKALL, vsn(2, 2, 62), NULL)
cfg(activation_monitoring_CFG, "monitoring", activation_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_DMEVENTD_MONITOR, vsn(2, 2, 63), NULL)
cfg(activation_polling_interval_CFG, "polling_interval", activation_CFG_SECTION, 0, CFG_TYPE_INT, DEFAULT_INTERVAL, vsn(2, 2, 63), NULL)
cfg(activation_auto_set_activation_skip_CFG, "auto_set_activation_skip", activation_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_AUTO_SET_ACTIVATION_SKIP, vsn(2,2,99), NULL)
cfg(metadata_pvmetadatacopies_CFG, "pvmetadatacopies", metadata_CFG_SECTION, CFG_ADVANCED, CFG_TYPE_INT, DEFAULT_PVMETADATACOPIES, vsn(1, 0, 0), NULL)
cfg(metadata_vgmetadatacopies_CFG, "vgmetadatacopies", metadata_CFG_SECTION, CFG_ADVANCED, CFG_TYPE_INT, DEFAULT_VGMETADATACOPIES, vsn(2, 2, 69), NULL)
cfg(metadata_pvmetadatasize_CFG, "pvmetadatasize", metadata_CFG_SECTION, CFG_ADVANCED, CFG_TYPE_INT, DEFAULT_PVMETADATASIZE, vsn(1, 0, 0), NULL)
cfg(metadata_pvmetadataignore_CFG, "pvmetadataignore", metadata_CFG_SECTION, CFG_ADVANCED, CFG_TYPE_BOOL, DEFAULT_PVMETADATAIGNORE, vsn(2, 2, 69), NULL)
cfg(metadata_stripesize_CFG, "stripesize", metadata_CFG_SECTION, CFG_ADVANCED, CFG_TYPE_INT, DEFAULT_STRIPESIZE, vsn(1, 0, 0), NULL)
cfg_array(metadata_dirs_CFG, "dirs", metadata_CFG_SECTION, CFG_ADVANCED, CFG_TYPE_STRING, NULL, vsn(1, 0, 0), NULL)
cfg(metadata_disk_areas_CFG, "disk_areas", metadata_CFG_SECTION, CFG_ALLOW_EMPTY | CFG_ADVANCED | CFG_UNSUPPORTED, CFG_TYPE_STRING, NULL, vsn(1, 0, 0), NULL)
cfg(report_aligned_CFG, "aligned", report_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_REP_ALIGNED, vsn(1, 0, 0), NULL)
cfg(report_buffered_CFG, "buffered", report_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_REP_BUFFERED, vsn(1, 0, 0), NULL)
cfg(report_headings_CFG, "headings", report_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_REP_HEADINGS, vsn(1, 0, 0), NULL)
cfg(report_separator_CFG, "separator", report_CFG_SECTION, 0, CFG_TYPE_STRING, DEFAULT_REP_SEPARATOR, vsn(1, 0, 0), NULL)
cfg(report_prefixes_CFG, "prefixes", report_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_REP_PREFIXES, vsn(2, 2, 36), NULL)
cfg(report_quoted_CFG, "quoted", report_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_REP_QUOTED, vsn(2, 2, 39), NULL)
cfg(report_colums_as_rows_CFG, "colums_as_rows", report_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_REP_COLUMNS_AS_ROWS, vsn(1, 0, 0), NULL)
cfg(report_devtypes_sort_CFG, "devtypes_sort", report_CFG_SECTION, 0, CFG_TYPE_STRING, DEFAULT_DEVTYPES_SORT, vsn(2, 2, 101), NULL)
cfg(report_devtypes_cols_CFG, "devtypes_cols", report_CFG_SECTION, 0, CFG_TYPE_STRING, DEFAULT_DEVTYPES_COLS, vsn(2, 2, 101), NULL)
cfg(report_devtypes_cols_verbose_CFG, "devtypes_cols_verbose", report_CFG_SECTION, 0, CFG_TYPE_STRING, DEFAULT_DEVTYPES_COLS_VERB, vsn(2, 2, 101), NULL)
cfg(report_lvs_sort_CFG, "lvs_sort", report_CFG_SECTION, 0, CFG_TYPE_STRING, DEFAULT_LVS_SORT, vsn(1, 0, 0), NULL)
cfg(report_lvs_cols_CFG, "lvs_cols", report_CFG_SECTION, 0, CFG_TYPE_STRING, DEFAULT_LVS_COLS, vsn(1, 0, 0), NULL)
cfg(report_lvs_cols_verbose_CFG, "lvs_cols_verbose", report_CFG_SECTION, 0, CFG_TYPE_STRING, DEFAULT_LVS_COLS_VERB, vsn(1, 0, 0), NULL)
cfg(report_vgs_sort_CFG, "vgs_sort", report_CFG_SECTION, 0, CFG_TYPE_STRING, DEFAULT_VGS_SORT, vsn(1, 0, 0), NULL)
cfg(report_vgs_cols_CFG, "vgs_cols", report_CFG_SECTION, 0, CFG_TYPE_STRING, DEFAULT_VGS_COLS, vsn(1, 0, 0), NULL)
cfg(report_vgs_cols_verbose_CFG, "vgs_cols_verbose", report_CFG_SECTION, 0, CFG_TYPE_STRING, DEFAULT_VGS_COLS_VERB, vsn(1, 0, 0), NULL)
cfg(report_pvs_sort_CFG, "pvs_sort", report_CFG_SECTION, 0, CFG_TYPE_STRING, DEFAULT_PVS_SORT, vsn(1, 0, 0), NULL)
cfg(report_pvs_cols_CFG, "pvs_cols", report_CFG_SECTION, 0, CFG_TYPE_STRING, DEFAULT_PVS_COLS, vsn(1, 0, 0), NULL)
cfg(report_pvs_cols_verbose_CFG, "pvs_cols_verbose", report_CFG_SECTION, 0, CFG_TYPE_STRING, DEFAULT_PVS_COLS_VERB, vsn(1, 0, 0), NULL)
cfg(report_segs_sort_CFG, "segs_sort", report_CFG_SECTION, 0, CFG_TYPE_STRING, DEFAULT_SEGS_SORT, vsn(1, 0, 0), NULL)
cfg(report_segs_cols_CFG, "segs_cols", report_CFG_SECTION, 0, CFG_TYPE_STRING, DEFAULT_SEGS_COLS, vsn(1, 0, 0), NULL)
cfg(report_segs_cols_verbose_CFG, "segs_cols_verbose", report_CFG_SECTION, 0, CFG_TYPE_STRING, DEFAULT_SEGS_COLS_VERB, vsn(1, 0, 0), NULL)
cfg(report_pvsegs_sort_CFG, "pvsegs_sort", report_CFG_SECTION, 0, CFG_TYPE_STRING, DEFAULT_PVSEGS_SORT, vsn(1, 1, 3), NULL)
cfg(report_pvsegs_cols_CFG, "pvsegs_cols", report_CFG_SECTION, 0, CFG_TYPE_STRING, DEFAULT_PVSEGS_COLS, vsn(1, 1, 3), NULL)
cfg(report_pvsegs_cols_verbose_CFG, "pvsegs_cols_verbose", report_CFG_SECTION, 0, CFG_TYPE_STRING, DEFAULT_PVSEGS_COLS_VERB, vsn(1, 1, 3), NULL)
cfg(dmeventd_mirror_library_CFG, "mirror_library", dmeventd_CFG_SECTION, 0, CFG_TYPE_STRING, DEFAULT_DMEVENTD_MIRROR_LIB, vsn(1, 2, 3), NULL)
cfg(dmeventd_raid_library_CFG, "raid_library", dmeventd_CFG_SECTION, 0, CFG_TYPE_STRING, DEFAULT_DMEVENTD_RAID_LIB, vsn(2, 2, 87), NULL)
cfg(dmeventd_snapshot_library_CFG, "snapshot_library", dmeventd_CFG_SECTION, 0, CFG_TYPE_STRING, DEFAULT_DMEVENTD_SNAPSHOT_LIB, vsn(1, 2, 26), NULL)
cfg(dmeventd_thin_library_CFG, "thin_library", dmeventd_CFG_SECTION, 0, CFG_TYPE_STRING, DEFAULT_DMEVENTD_THIN_LIB, vsn(2, 2, 89), NULL)
cfg(dmeventd_executable_CFG, "executable", dmeventd_CFG_SECTION, 0, CFG_TYPE_STRING, NULL, vsn(2, 2, 73), NULL)
cfg(tags_hosttags_CFG, "hosttags", tags_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_HOSTTAGS, vsn(1, 0, 18), NULL)
cfg_section(tag_CFG_SUBSECTION, "tag", tags_CFG_SECTION, CFG_NAME_VARIABLE, vsn(1, 0, 18), NULL)
cfg(tag_host_list_CFG, "host_list", tag_CFG_SUBSECTION, CFG_ALLOW_EMPTY, CFG_TYPE_STRING, NULL, vsn(1, 0, 18), NULL)
cfg(CFG_COUNT, NULL, root_CFG_SECTION, 0, CFG_TYPE_INT, 0, vsn(0, 0, 0), NULL)
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