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server-administration:shrink-lvm-volume [2009-10-09 20:09:34]
garrett.plasky 		server-administration:shrink-lvm-volume [2011-07-01 19:20:18] (current)
garrett.plasky Approved
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 The following steps will show you how to shrink an LVM volume.  In this example we will be shrinking volume VolGroup00-LogVol00 down to 20GB. **Note:** This can and will cause data loss if performed improperly or on a volume that you attempt to shrink below the current volume usage. With that said, the steps are as follows: The following steps will show you how to shrink an LVM volume.  In this example we will be shrinking volume VolGroup00-LogVol00 down to 20GB. **Note:** This can and will cause data loss if performed improperly or on a volume that you attempt to shrink below the current volume usage. With that said, the steps are as follows:
  
-<code console># umount /dev/mapper/VolGroup00-LogVol00 +<sxh shell>umount /dev/mapper/VolGroup00-LogVol00 
-# e2fsck -f /dev/mapper/VolGroup00-LogVol00 +e2fsck -f /dev/mapper/VolGroup00-LogVol00 
-# resize2fs /dev/mapper/VolGroup00-LogVol00 20G +resize2fs /dev/mapper/VolGroup00-LogVol00 20G 
-# lvreduce -L 20G /dev/mapper/VolGroup00-LogVol00 +lvreduce -L 20G /dev/mapper/VolGroup00-LogVol00 
-# e2fsck -f /dev/mapper/VolGroup00-LogVol00</code>+e2fsck -f /dev/mapper/VolGroup00-LogVol00</sxh>
  
 The process is similar when expanding a logical volume except the <c>lvextend</c> command is used in place of <c>lvreduce</c>. The process is similar when expanding a logical volume except the <c>lvextend</c> command is used in place of <c>lvreduce</c>.
  
 {{tag>lvm how-to}} {{tag>lvm how-to}}