man_de_lvresize

LVRESIZE(8)                                              System Manager's Manual                                             LVRESIZE(8)



NAME
       lvresize — resize a logical volume

SYNOPSIS
       lvresize  [--alloc AllocationPolicy] [--noudevsync] [--commandprofile ProfileName] [-i|--stripes Stripes [-I|--stripesize Stripe‐
       Size]] {[-l|--extents [+|-]LogicalExtentsNumber[%{VG|LV|PVS|FREE|ORIGIN}] | [-L|--size  [+|-]LogicalVolumeSize[bBsSkKmMgGtTpPeE]}
       [--poolmetadatasize [+]MetadataVolumeSize[bBsSkKmMgG] [-f|--force] [-n|--nofsck] [-r|--resizefs] LogicalVolume{Name|Path} [Physi‐
       calVolumePath[:PE[-PE]]...]

DESCRIPTION
       lvresize allows you to resize 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 shrunk first so that the extents that are to be
       removed are not in use.  Resizing snapshot logical volumes (see lvcreate(8) for information about  creating  snapshots)  is  sup‐
       ported as well.  But to change the number of copies in a mirrored logical volume use lvconvert(8).

OPTIONS
       See lvm(8) for common options.

       -f, --force
              Force resize without prompting even when it may cause data loss.

       -n, --nofsck
              Do  not  perform  fsck before resizing filesystem when filesystem requires it. You may need to use --force to proceed with
              this option.

       -r, --resizefs
              Resize underlying filesystem together with the logical volume using fsadm(8).

       -l, --extents [+|-]LogicalExtentsNumber[%{VG|LV|PVS|FREE|ORIGIN}]
              Change or set the logical volume size in units of logical extents.  With the + or - sign the value is  added  to  or  sub‐
              tracted  from the actual size of the logical volume and without it, the value is taken as an absolute one.  The total num‐
              ber of physical extents affected will be greater than this if, for example, the volume is mirrored.  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 of the PhysicalVolumes on the  command
              line  with the suffix %PVS, 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.  The resulting  value
              is  rounded  downward  for  the subtraction otherwise it is rounded upward.  N.B. In a future release, when expressed as a
              percentage with PVS, VG or FREE, the number will be treated as an approximate total number of physical extents to be allo‐
              cated or freed (including extents used by any mirrors, for example).  The code may currently allocate or remove more space
              than you might otherwise expect.

       -L, --size [+|-]LogicalVolumeSize[bBsSkKmMgGtTpPeE]
              Change or set the logical volume size in units of megabytes.  A size suffix of M for megabytes, G  for  gigabytes,  T  for
              terabytes,  P for petabytes or E for exabytes is optional.  With the + or - sign the value is added or subtracted from the
              actual size of the logical volume and rounded to the full extent size and without it, the value is taken  as  an  absolute
              one.

       -i, --stripes Stripes
              Gives  the number of stripes to use when extending a Logical Volume.  Defaults to whatever the last segment of the Logical
              Volume uses.  Not applicable to LVs using the original metadata LVM format, which must use a single value throughout.

       --poolmetadatasize [+]MetadataVolumeSize[bBsSkKmMgG]
              Change or set the thin pool metadata logical volume size.  With the + sign the value is added to the actual  size  of  the
              metadata  volume  and rounded to the full extent size and without it, the value is taken as an absolute one.  Maximal size
              is 16GiB. Default unit is megabytes.

       -I, --stripesize StripeSize
              Gives the number of kilobytes for the granularity of the stripes.  Defaults to whatever the last segment  of  the  Logical
              Volume uses.  Not applicable to LVs using the original metadata LVM format, which must use a single value throughout.
              StripeSize  must  be  2^n (n = 2 to 9) for metadata in LVM1 format.  For metadata in LVM2 format, the stripe size may be a
              larger power of 2 but must not exceed the physical extent size.

       --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.

EXAMPLES
       Extend a logical volume vg1/lv1 by 16MB using physical extents /dev/sda:0-1 and /dev/sdb:0-1 for allocation of extents:

       lvresize -L+16M vg1/lv1 /dev/sda:0-1 /dev/sdb:0-1

SEE ALSO
       fsadm(8), lvm(8), lvconvert(8), lvcreate(8), lvreduce(8), lvchange(8)



Sistina Software UK                                LVM TOOLS 2.02.111(2) (2014-09-01)                                        LVRESIZE(8)
  • man_de_lvresize.txt
  • Dernière modification: 2020/06/03 16:26
  • (modification externe)