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    Command:

    lvreduce

    
    
    

    SYNOPSIS

           lvreduce [-A|--autobackup y|n] [-d|--debug] [-f|--force] [-h|-?|--help]
           [--noudevsync] {-l|--extents  [-]LogicalExtentsNumber[%{VG|LV|FREE|ORI-
           GIN}]  |  -L|--size [-]LogicalVolumeSize[bBsSkKmMgGtTpPeE]} [-t|--test]
           [-v|--verbose] LogicalVolume[Path]
    
    
    

    DESCRIPTION

           lvreduce allows you to reduce the size of a logical volume.  Be careful
           when reducing a logical volume's size, because data in the reduced part
           is lost!!!
           You should therefore ensure  that  any  filesystem  on  the  volume  is
           resized  before  running  lvreduce  so  that the extents that are to be
           removed are not in use.
           Shrinking snapshot logical volumes (see lvcreate(8) for information  to
           create  snapshots)  is  supported as well.  But to change the number of
           copies in a mirrored logical volume use lvconvert (8).
           Sizes will be rounded if necessary - for example, the volume size  must
           be an exact number of extents and the size of a striped segment must be
           a multiple of the number of stripes.
    
    
    

    OPTIONS

           See lvm for common options.
    
           -f, --force
                  Force size reduction without any question.
    
           --noudevsync
                  Disable udev synchronisation. The  process  will  not  wait  for
                  notification  from  udev.   It will continue irrespective of any
                  possible udev processing in the background.  You should only use
                  this if udev is not running or has rules that ignore the devices
                  LVM2 creates.
    
           -l, --extents [-]LogicalExtentsNumber[%{VG|LV|FREE|ORIGIN}]
                  Reduce or set the  logical  volume  size  in  units  of  logical
                  extents.   With the - sign the value will be subtracted from the
                  logical volume's actual size and without it the  value  will  be
                  taken  as an absolute size.  The number can also be expressed as
                  a percentage of the total space in the  Volume  Group  with  the
                  suffix  %VG, relative to the existing size of the Logical Volume
                  with the suffix %LV, as a percentage of the remaining free space
                  in  the  Volume Group with the suffix %FREE, or (for a snapshot)
                  as a percentage of the total space in the Origin Logical  Volume
                  with the suffix %ORIGIN.
    
           -L, --size [-]LogicalVolumeSize[bBsSkKmMgGtTpPeE]
                  Reduce  or set the logical volume size in units of megabytes.  A
                  size suffix of k for kilobyte, m for megabyte, g for  gigabytes,
                  t  for terabytes, p for petabytes or e for exabytes is optional.
                  With the - sign the value will be subtracted  from  the  logical
                  volume's actual size and without it it will be taken as an abso-
                  lute size.
    
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