Difference between revisions of "HowTo Resize The "root" File System Using LVM"

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(Overview)
(Demonstration)
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The '''root''' file system size is currently '''17.50GB'''. Our goal is to increase the '''root''' file system to a total of '''19.50GB'''.
 
The '''root''' file system size is currently '''17.50GB'''. Our goal is to increase the '''root''' file system to a total of '''19.50GB'''.
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== Initialize Disk or Disk Partition for LVM Usage ==

Revision as of 08:06, 26 May 2016

Overview

This page demonstrates how to resize the root file system by increasing it's size by 2GB using the Logical Volume Manager (LVM). This will be done without rebooting the NST system. The follow environment exists:

[root@nst22 ~]# ssm list;
-----------------------------------------------------------
Device        Free      Used      Total  Pool   Mount point
-----------------------------------------------------------
/dev/sda                       20.00 GB         PARTITIONED
/dev/sda1                     500.00 MB         /boot
/dev/sda2  0.00 KB  19.51 GB   19.51 GB  nst22
-----------------------------------------------------------
-------------------------------------------------
Pool   Type  Devices     Free      Used     Total
-------------------------------------------------
nst22  lvm   2        2.00 GB  19.51 GB  21.50 GB
-------------------------------------------------
------------------------------------------------------------------------------------
Volume           Pool   Volume size  FS      FS size       Free  Type    Mount point
------------------------------------------------------------------------------------
/dev/nst22/root  nst22     17.51 GB  xfs    17.50 GB    5.88 GB  linear  /
/dev/nst22/swap  nst22      2.00 GB                              linear
/dev/sda1                 500.00 MB  ext4  500.00 MB  288.89 MB  part    /boot
------------------------------------------------------------------------------------
  • The root file sytem is of type xfs
[root@nst22 ~]# mount | grep root;
/dev/mapper/nst22-root on / type xfs (rw,relatime,attr2,inode64,noquota)

Demonstration

We will now show a sequence of commands to accomplish resizing the root file system by 2GB. Our NST system is a Virtual Machine (VM) running under the VMware Fusion Hypervisor. Behind the scenes we created a new virtual disk of size 2GB. On a physical system we could of used a whole disk or a disk partition for this demonstration.

The root file system size is currently 17.50GB. Our goal is to increase the root file system to a total of 19.50GB.

Initialize Disk or Disk Partition for LVM Usage