Can I resize mature LVMs?

Hi all,

Can I resize and remove delete LVMs

The server is Ubuntu 20LTS and after three years of use, I would like to fine tune my LVM setup. Some LVMs can be reduced in size, others can be outright deleted.
I have never done this before, so better ask first

Regards

 

Great Thank you! will start hacking away immediately

 

Hi

Would you be able to tell me the command line to reduce an LVM?

I am trying
but it complains that the file system is smaller

Code:

root@serv:/home/adminpc# lvreduce -r -L80G /dev/LVG/vmstorage
fsck from util-linux 2.34
/dev/mapper/LVG-vmstorage: Inode 13 extent tree (at level 2) could be narrower.  IGNORED.
/dev/mapper/LVG-vmstorage: 13/103661568 files (0.0% non-contiguous), 79608165/414621696 blocks
find: ‘/proc/37913’: No such file or directory
resize2fs 1.45.5 (07-Jan-2020)
resize2fs: New size smaller than minimum (75252515)

fsadm: Resize ext4 failed.
  /sbin/fsadm failed: 1
  Filesystem resize failed.
root@serv:/home/adminpc#

 

Using Internet Search Engines with

Code:

md lvreduce

finds instructions.
Some file systems can not be made smaller. What file system is on that disk partition? If the file system can be shrunk, do that separately before shrinking the disk.

 

Thank you for that, that search pulled up something I could use, The searches I found were perfect world type stuff