--- Extend Logical Volume ---

XFS - FS
Grow-XFS-root-xfs.html

Two similar ways  to do this:  [ONE] |  [TWO] | 



ONE - DEV not in Mapper TOP

Don't forget about the prod to dev machine relationship.

## Look at the physical device that was extended on VM
fdisk /dev/sda

Welcome to fdisk (util-linux 2.34).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.

## What does the partition table look like?
Command (m for help): p
Disk /dev/sda: 200 GiB, 214748364800 bytes, 419430400 sectors
Disk model: Virtual disk    
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 7268CB07-6FD1-4B5B-8774-86ACE4CEF06D

Device       Start       End   Sectors Size Type
/dev/sda1     2048      4095      2048   1M BIOS boot
/dev/sda2     4096   2101247   2097152   1G Linux filesystem
/dev/sda3  2101248 209713151 207611904  99G Linux filesystem

## How much free space
Command (m for help): F

Unpartitioned space /dev/sda: 100 GiB, 107375214080 bytes, 209717215 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes

    Start       End   Sectors  Size
209713152 419430366 209717215  100G

## Make a new partition
Command (m for help): n
Partition number (4-128, default 4):
First sector (209713152-419430366, default 209713152):
Last sector, +/-sectors or +/-size{K,M,G,T,P} (209713152-419430366, default 419430366):

Created a new partition 4 of type 'Linux filesystem' and of size 100 GiB.

## Write it out
Command (m for help): w
The partition table has been altered.
Syncing disks.


Disk /dev/sda: 200 GiB, 214748364800 bytes, 419430400 sectors
Disk model: Virtual disk    
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 7268CB07-6FD1-4B5B-8774-86ACE4CEF06D

Device         Start       End   Sectors  Size Type
/dev/sda1       2048      4095      2048    1M BIOS boot
/dev/sda2       4096   2101247   2097152    1G Linux filesystem
/dev/sda3    2101248 209713151 207611904   99G Linux filesystem
/dev/sda4  209713152 419430366 209717215  100G Linux filesystem

## Extend the Volume Group with the new Partition
vgextend ubuntu-vg  /dev/sda4
  Physical volume "/dev/sda4" successfully created.
  Volume group "ubuntu-vg" successfully extended

## Extend the the size of the Logical Volume that needs the space
lvextend --size 189G /dev/ubuntu-vg/ubuntu-lv
  Size of logical volume ubuntu-vg/ubuntu-lv changed from 95.00 GiB (24320 extents) to 189.00 GiB (48384 extents).
  Logical volume ubuntu-vg/ubuntu-lv successfully resized.
  
## Resize the filesysstem of the  Logical Volume that was extended
resize2fs  /dev/ubuntu-vg/ubuntu-lv
resize2fs 1.45.5 (07-Jan-2020)
Filesystem at /dev/ubuntu-vg/ubuntu-lv is mounted on /; on-line resizing required
old_desc_blocks = 12, new_desc_blocks = 24
The filesystem on /dev/ubuntu-vg/ubuntu-lv is now 49545216 (4k) blocks long.

## Confirm that it worked.
df -h /
Filesystem                         Size  Used Avail Use% Mounted on
/dev/mapper/ubuntu--vg-ubuntu--lv  186G   11G  167G   7% /


TWO - in Mapper  [TOP]

https://www.thegeekdiary.com/how-to-grow-extend-xfs-filesytem-in-centos-rhel-using-xfs_growfs-command/


Once the partiton is ID'd that needs to be extended do ls -l /dev/mapper to get the LV name.

  To extend the LUN:  pvresize /dev/mapper/<cdLETTER> 
  Then find and caclulate the spare that can be used...
    pvscan
    lvscan 
  lvextend --size  <Full Size to Extend To>G /dev/mapper/<Volumegroup-Logical Volumename>
  resize2fs /dev/mapper/<Volumegroup-Logical Volumename>
  
  For example...
  lvextend --size  550G /dev/mapper/VolGroup01-u02
  resize2fs /dev/mapper/VolGroup01-u02 
 

  if XFS
  lvextend --size  <Full Size to Extend To>G /dev/mapper/<Volumegroup-Logical Volumename>
  /usr/sbin/xfs_growfs /<mount point>
  
  For example...
  lvextend --size  550G /dev/mapper/VolGroup01-u02
  /usr/sbin/xfs_growfs /u02
 
   
  

Example of and Extend, Move, Reduce, Remove and Resize.
VG name : data
LV names:  /dev/data/l05
           /dev/data/l03

pvcreate /dev/mapper/cdd

vgextend data /dev/mapper/cdd
vgdisplay

pvmove -b /dev/mapper/cdc /dev/mapper/cdd

vgreduce data /dev/mapper/cdc
vgdisplay

lvextend --size  500G /dev/data/l05
resize2fs /dev/data/l05

lvextend --size  1500G /dev/data/l03
resize2fs /dev/data/l03

pvremove /dev/mapper/cdc



OLD

 lvextend --size  G /dev/mapper/
  resize2fs /dev/mapper/
  
  For example...
  lvextend --size  550G /dev/mapper/VolGroup01-u02
  resize2fs /dev/mapper/VolGroup01-u02 
 

  if XFS
  /usr/sbin/xfs_growfs /
  resize2fs /dev/mapper/
  
  For example...
  /usr/sbin/xfs_growfs /u02
  resize2fs /dev/mapper/VolGroup01-u02