4.d Create and delete logical volumes

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# lvcreate -L 4g [vg name] -n [lv name]
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Flags:

• -n - set the Logical Volume name
• -l - use extents rather than a specified size

Example:

Create the LV

# lvcreate -L 4g vg1 -n lv1
  Logical volume "lv1" created.
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Display simple information about the LV

# lvs vg1
  LV   VG  Attr       LSize Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert
  lv1  vg1 -wi-a----- 4.00g   
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Simple information with verbose

# lvs -v vg1
  LV   VG  #Seg Attr       LSize Maj Min KMaj KMin Pool Origin Data%  Meta%  Move Cpy%Sync Log Convert LV UUID                                LProfile
  lv1  vg1    2 -wi-a----- 4.00g  -1  -1  253    2                                                     ADUPcG-YAuo-5vDC-7FEB-Cas9-4Gt0-hR1kVD  
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Detailed information

# lvdisplay vg1
  --- Logical volume ---
  LV Path                /dev/vg1/lv1
  LV Name                lv1
  VG Name                vg1
  LV UUID                ADUPcG-YAuo-5vDC-7FEB-Cas9-4Gt0-hR1kVD
  LV Write Access        read/write
  LV Creation host, time localhost.localdomain, 2020-11-18 08:07:29 -0500
  LV Status              available
  # open                 0
  LV Size                4.00 GiB
  Current LE             1024
  Segments               2
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     8192
  Block device           253:2
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lvremove removes one or more LVs. For standard LVs, this returns the logical extents that were used by the LV to the VG for use by other LVs.

# lvremove /dev/vg1/lv1
Do you really want to remove active logical volume vg1/lv1? [y/n]: y
  Logical volume "lv1" successfully removed
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You can also specify the logical volume with [vg name]/[lv name]

# lvremove vg1/lv1
Do you really want to remove active logical volume vg1/lv1? [y/n]: y
  Logical volume "lv1" successfully removed
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