Logical Volume Management Fields
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Internal
Logical Volume Fields
- lv_all - All fields in this section.
- lv_uuid - Unique identifier.
- lv_name - Name. LVs created for internal use are enclosed in brackets.
- lv_full_name - Full name of LV including its VG, namely VG/LV.
- lv_path - Full pathname for LV. Blank for internal LVs.
- lv_dm_path - Internal device-mapper pathname for LV (in /dev/mapper directory).
- lv_parent - For LVs that are components of another LV, the parent LV.
Logical Volume Device Info and Status Combined Fields
- lv_all - All fields in this section.
- lv_attr - Various attributessee man page.
Logical Volume Fields
- lv_all - All fields in this section.
- lv_layout - LV layout.
- lv_role - LV role.
- lv_initial_image_sync - Set if mirror/RAID images underwent initial resynchronization.
- lv_image_synced - Set if mirror/RAID image is synchronized.
- lv_merging - Set if snapshot LV is being merged to origin.
- lv_converting - Set if LV is being converted.
- lv_allocation_policy - LV allocation policy.
- lv_allocation_locked - Set if LV is locked against allocation changes.
- lv_fixed_minor - Set if LV has fixed minor number assigned.
- lv_merge_failed - Set if snapshot merge failed.
- lv_snapshot_invalid - Set if snapshot LV is invalid.
- lv_skip_activation - Set if LV is skipped on activation.
- lv_when_full - For thin pools, behavior when full.
- lv_active - Active state of the LV.
- lv_active_locally - Set if the LV is active locally.
- lv_active_remotely - Set if the LV is active remotely.
- lv_active_exclusively - Set if the LV is active exclusively.
- lv_major - Persistent major number or -1 if not persistent.
- lv_minor - Persistent minor number or -1 if not persistent.
- lv_read_ahead - Read ahead setting in current units.
- lv_size - Size of LV in current units.
- lv_metadata_size - For thin and cache pools, the size of the LV that holds the metadata.
- seg_count - Number of segments in LV.
- origin - For snapshots and thins, the origin device of this LV.
- origin_uuid - For snapshots and thins, the UUID of origin device of this LV.
- origin_size - For snapshots, the size of the origin device of this LV.
- lv_ancestors - LV ancestors ignoring any stored history of the ancestry chain.
- lv_full_ancestors - LV ancestors including stored history of the ancestry chain.
- lv_descendants - LV descendants ignoring any stored history of the ancestry chain.
- lv_full_descendants - LV descendants including stored history of the ancestry chain.
Logical Volume Device Status Fields
- lv_all - All fields in this section.
- data_percent - For snapshot, cache and thin pools and volumes, the percentage full if LV is active.
- snap_percent - For snapshots, the percentage full if LV is active.
- metadata_percent - For cache and thin pools, the percentage of metadata full if LV is active.
- copy_percent - For Cache, RAID, mirrors and pvmove, current percentage in-sync.
- sync_percent - For Cache, RAID, mirrors and pvmove, current percentage in-sync.
Logical Volume Fields
- lv_all - All fields in this section.
- raid_mismatch_count - For RAID, number of mismatches found or repaired.
- raid_sync_action - For RAID, the current synchronization action being performed.
- raid_write_behind - For RAID1, the number of outstanding writes allowed to writemostly devices.
- raid_min_recovery_rate - For RAID1, the minimum recovery I/O load in kiB/sec/disk.
- raid_max_recovery_rate - For RAID1, the maximum recovery I/O load in kiB/sec/disk.
- move_pv - For pvmove, Source PV of temporary LV created by pvmove.
- move_pv_uuid - For pvmove, the UUID of Source PV of temporary LV created by pvmove.
- convert_lv - For lvconvert, Name of temporary LV created by lvconvert.
- convert_lv_uuid - For lvconvert, UUID of temporary LV created by lvconvert.
- mirror_log - For mirrors, the LV holding the synchronisation log.
- mirror_log_uuid - For mirrors, the UUID of the LV holding the synchronisation log.
- data_lv - For thin and cache pools, the LV holding the associated data.
- data_lv_uuid - For thin and cache pools, the UUID of the LV holding the associated data.
- metadata_lv - For thin and cache pools, the LV holding the associated metadata.
- metadata_lv_uuid - For thin and cache pools, the UUID of the LV holding the associated metadata.
- pool_lv - For thin volumes, the thin pool LV for this volume.
- pool_lv_uuid - For thin volumes, the UUID of the thin pool LV for this volume.
- lv_tags - Tags, if any.
- lv_profile - Configuration profile attached to this LV.
- lv_lockargs - Lock args of the LV used by lvmlockd.
- lv_time - Creation time of the LV, if known
- lv_time_removed - Removal time of the LV, if known
- lv_host - Creation host of the LV, if known.
- lv_modules - Kernel device-mapper modules required for this LV.
- lv_historical - Set if the LV is historical.
Logical Volume Device Info Fields
- lv_all - All fields in this section.
- lv_kernel_major - Currently assigned major number or -1 if LV is not active.
- lv_kernel_minor - Currently assigned minor number or -1 if LV is not active.
- lv_kernel_read_ahead - Currently-in-use read ahead setting in current units.
- lv_permissions - LV permissions.
- lv_suspended - Set if LV is suspended.
- lv_live_table - Set if LV has live table present.
- lv_inactive_table - Set if LV has inactive table present.
- lv_device_open - Set if LV device is open.
Logical Volume Device Status Fields
- lv_all - All fields in this section.
- cache_total_blocks - Total cache blocks.
- cache_used_blocks - Used cache blocks.
- cache_dirty_blocks - Dirty cache blocks.
- cache_read_hits - Cache read hits.
- cache_read_misses - Cache read misses.
- cache_write_hits - Cache write hits.
- cache_write_misses - Cache write misses.
- kernel_cache_settings - Cache settings/parameters as set in kernel, including default values (cached segments only).
- kernel_cache_policy - Cache policy used in kernel.
- lv_health_status - LV health status.
- kernel_discards - For thin pools, how discards are handled in kernel.
- lv_check_needed - For thin pools and cache volumes, whether metadata check is needed.
Physical Volume Label Fields
- pv_all - All fields in this section.
- pv_fmt - Type of metadata.
- pv_uuid - Unique identifier.
- dev_size - Size of underlying device in current units.
- pv_name - Name.
- pv_major - Device major number.
- pv_minor - Device minor number.
- pv_mda_free - Free metadata area space on this device in current units.
- pv_mda_size - Size of smallest metadata area on this device in current units.
- pv_ext_vsn - PV header extension version.
Physical Volume Fields
- pv_all - All fields in this section.
- pe_start - Offset to the start of data on the underlying device.
- pv_size - Size of PV in current units.
- pv_free - Total amount of unallocated space in current units.
- pv_used - Total amount of allocated space in current units.
- pv_attr - Various attributes, see man page.
- pv_allocatable - Set if this device can be used for allocation.
- pv_exported - Set if this device is exported.
- pv_missing - Set if this device is missing in system.
- pv_pe_count - Total number of Physical Extents.
- pv_pe_alloc_count - Total number of allocated Physical Extents.
- pv_tags - Tags, if any.
- pv_mda_count - Number of metadata areas on this device.
- pv_mda_used_count - Number of metadata areas in use on this device.
- pv_ba_start - Offset to the start of PV Bootloader Area on the underlying device in current units.
- pv_ba_size - Size of PV Bootloader Area in current units.
- pv_in_use - Set if PV is used.
- pv_duplicate - Set if PV is an unchosen duplicate.
Volume Group Fields
- vg_all - All fields in this section.
- vg_fmt - Type of metadata.
- vg_uuid - Unique identifier.
- vg_name - Name.
- vg_attr - Various attributes, see man page.
- vg_permissions - VG permissions.
- vg_extendable - Set if VG is extendable.
- vg_exported - Set if VG is exported.
- vg_partial - Set if VG is partial.
- vg_allocation_policy - VG allocation policy.
- vg_clustered - Set if VG is clustered.
- vg_size - Total size of VG in current units.
- vg_free - Total amount of free space in current units.
- vg_sysid - System ID of the VG indicating which host owns it.
- vg_systemid - System ID of the VG indicating which host owns it.
- vg_lock_type - Lock type of the VG used by lvmlockd.
- vg_lock_args - Lock args of the VG used by lvmlockd.
- vg_extent_size - Size of Physical Extents in current units.
- vg_extent_count - Total number of Physical Extents.
- vg_free_count - Total number of unallocated Physical Extents.
- max_lv - Maximum number of LVs allowed in VG or 0 if unlimited.
- max_pv - Maximum number of PVs allowed in VG or 0 if unlimited.
- pv_count - Number of PVs in VG.
- vg_missing_pv_count - Number of PVs in VG which are missing.
- lv_count - Number of LVs.
- snap_count - Number of snapshots.
- vg_seqno - Revision number of internal metadata. Incremented whenever it changes.
- vg_tags - Tags, if any.
- vg_profile - Configuration profile attached to this VG.
- vg_mda_count - Number of metadata areas on this VG.
- vg_mda_used_count - Number of metadata areas in use on this VG.
- vg_mda_free - Free metadata area space for this VG in current units.
- vg_mda_size - Size of smallest metadata area for this VG in current units.
- vg_mda_copies - Target number of in use metadata areas in the VG.
Logical Volume Segment Fields
- seg_all - All fields in this section.
- segtype - Type of LV segment.
- stripes - Number of stripes or mirror legs.
- stripe_size - For stripes, amount of data placed on one device before switching to the next.
- region_size - For mirrors, the unit of data copied when synchronising devices.
- chunk_size - For snapshots, the unit of data used when tracking changes.
- thin_count - For thin pools, the number of thin volumes in this pool.
- discards - For thin pools, how discards are handled.
- cache_mode - For cache pools, how writes are cached.
- zero - For thin pools and volumes, if zeroing is enabled.
- transaction_id - For thin pools, the transaction id and creation transaction id for thins.
- thin_id - For thin volume, the thin device id.
- seg_start - Offset within the LV to the start of the segment in current units.
- seg_start_pe - Offset within the LV to the start of the segment in physical extents.
- seg_size - Size of segment in current units.
- seg_size_pe - Size of segment in physical extents.
- seg_tags - Tags, if any.
- seg_pe_ranges - Ranges of Physical Extents of underlying devices in command line format (deprecated, use seg_le_ranges for common format).
- seg_le_ranges - Ranges of Logical Extents of underlying devices in command line format.
- seg_metadata_le_ranges - Ranges of Logical Extents of underlying metadata devices in command line format.
- devices - Underlying devices used with starting extent numbers.
- metadata_devices - Underlying metadata devices used with starting extent numbers.
- seg_monitor - Dmeventd monitoring status of the segment.
- cache_policy - The cache policy (cached segments only).
- cache_settings - Cache settings/parameters (cached segments only).
Physical Volume Segment Fields
- pvseg_all - All fields in this section.
- pvseg_start - Physical Extent number of start of segment.
- pvseg_size - Number of extents in segment.
Special Fields
- selected - Set if item passes selection criteria.