Failed to find sysfs mount point
  WARNING: Running as a non-root user. Functionality may be unavailable.
  lvextend - Add space to a logical volume

  Extend an LV by a specified size.
  lvextend -L|--size [+]Size[m|UNIT] LV
	[ -l|--extents [+]Number[PERCENT] ]
	[ -i|--stripes Number ]
	[ -I|--stripesize Size[k|UNIT] ]
	[ -r|--resizefs ]
	[    --fs String ]
	[    --fsmode String ]
	[    --poolmetadatasize [+]Size[m|UNIT] ]
	[ COMMON_OPTIONS ]
	[ PV ... ]

  Extend an LV by specified PV extents.
  lvextend LV PV ...
	[ -i|--stripes Number ]
	[ -I|--stripesize Size[k|UNIT] ]
	[ -r|--resizefs ]
	[    --fs String ]
	[    --fsmode String ]
	[ COMMON_OPTIONS ]

  Extend a pool metadata SubLV by a specified size.
  lvextend --poolmetadatasize [+]Size[m|UNIT] LV
	[ -i|--stripes Number ]
	[ -I|--stripesize Size[k|UNIT] ]
	[ COMMON_OPTIONS ]
	[ PV ... ]

  Extend an LV according to a predefined policy.
  lvextend --usepolicies LV
	[ -r|--resizefs ]
	[    --fs String ]
	[    --fsmode String ]
	[ COMMON_OPTIONS ]
	[ PV ... ]

  Common options for command:
	[ -A|--autobackup y|n ]
	[ -f|--force ]
	[ -m|--mirrors Number ]
	[ -n|--nofsck ]
	[    --alloc contiguous|cling|cling_by_tags|normal|anywhere|inherit ]
	[    --nosync ]
	[    --noudevsync ]
	[    --reportformat basic|json|json_std ]
	[    --type linear|striped|snapshot|raid|mirror|thin|thin-pool|vdo|vdo-pool|cache|cache-pool|writecache ]

  Common options for lvm:
	[ -d|--debug ]
	[ -h|--help ]
	[ -q|--quiet ]
	[ -v|--verbose ]
	[ -y|--yes ]
	[ -t|--test ]
	[    --commandprofile String ]
	[    --config String ]
	[    --driverloaded y|n ]
	[    --nolocking ]
	[    --lockopt String ]
	[    --longhelp ]
	[    --profile String ]
	[    --version ]
	[    --devicesfile String ]
	[    --devices PV ]
	[    --nohints ]
	[    --journal String ]

  Use --longhelp to show all options and advanced commands.