Reducing and Extending a logical volume

How to Reducing a logical volume


pvdisplay -m

Logical volumes can be reduced in size as well as increased. However, it is very important to remember to reduce the size of the file system or whatever is residing in the volume before shrinking the volume itself, otherwise you risk losing data.

If you prefer to do this manually you must know the new size of the volume in blocks and use the following commands:
# umount /home
# resize2fs /dev/myvg/homevol 524288
# lvreduce -L-1G /dev/myvg/homevol
# mount /home

Extending a logical volume

# lvextend -L+1G /dev/myvg/homevol
# resize2fs /dev/myvg/homevol



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