Increasing or decreasing static partition size in Linux

 Increasing or decreasing static partition size in Linux

1. Create a static partition. Here I have created a partition of 5Gb.

2. Now, create a partition. Here I am creating a sub-partition of 1Gb.

 

3. Now, format and mount the partition.

I am creating a folder with the name static and mounting the partition sdd1 to it.

mkfs.ext4 /dev/sdd1--> For formatting

mkdir /static

mount /dev/sdd1 /static --> For mounting

4. Now, Create a file in /static.

Go to static using cd /static.

5. In order to increase the size of a static partition, we need to unmount it and also delete the existing partition.

unmount /dev/sdd1 --> For unmounting

fdisk /dev/sdd1

and then use 'd' for deleting the partition and 'w' to save the changes.

6. Create a new partition and enter the desired size you want the partition to have.

I am not entering any size here, So it will take all the 5Gb from the partition I created of 5Gb i.e., /dev/sdd

7. Here, we can clearly see that the size is now 5Gb.

8. Now, format only the extended part.

9. Now, mount the partition again to the desired directory/folder.

Use the following commands :

mount /dev/sdd1 /static

And also use the command 'df -h' to check if the partition is mounted and also check if the size is increased.

10. Now, check if the previously created file exists or not.

To check the file, go to cd /static -->ls -->cat file.txt

11. In the above following we have increased the size of the static partition, to decrease we need to follow the same step until resizing. 

Here, I am reducing my size to 3Gb.

So, I have to use the following commands in order to achieve that.

e2fsck -f /dev/sdd1--> To examine the filesystem

resize2fs /dev/sdd1 3G

In the above command of resizing, 3G means to resize the inode table for the size of 3Gb partition.

12. Now, again delete the existing partition, create a new partition of 3Gb, save the changes.

13. Now, again format it and mount it to the desired directory/folder. Use 'df -h' to check if the partition is mounted and also check if the size is decreased.

14. Now, go check the if the previously created file exists or not.

To check the file, go to cd /static -->ls --> cat file.txt

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