I want to resize my linux root volume to create a separate partition. (aws ec2)

Question

//as-is

[root@ip-172-28-72-124 /]# lsblk

NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT

nvme0n1 259:0 0 100G 0 disk

├─nvme0n1p1 259:1 0 100G 0 part /

└─nvme0n1p128 259:2 0 1M 0 part

————————————————————————————————————

// to-be

[root@ip-172-28-72-124 /]# lsblk

NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT

nvme0n1 259:0 0 100G 0 disk

├─nvme0n1p1 259:1 0 50G 0 part /

├─nvme0n1p2 259:1 0 50G 0 part /data

└─nvme0n1p128 259:2 0 1M 0 part

————————————————————————————————————

The file system is xfs. How can I change nvme0n1p1 to 50G?

I tried to change the size using xfs_growfs but it failed.

Sadly your question lacks details and is unclear. You even haven't provided OS which you are using. — Marcin, Feb 12 '23 at 07:10
I thought OS information was unnecessary for my question. It is amazon linux2. — JT Kon, Feb 12 '23 at 07:25

score 1 · Accepted Answer · answered Feb 12 '23 at 07:15

xfs_growfs is used for the opposite of what you want. If you are using a RHEL based system, official answer is you cannot.

"After an XFS file system is created, its size cannot be reduced. However, it can still be enlarged using the xfs_growfs command. For more information, see Section 3.4, “Increasing the Size of an XFS File System”)."

You may find some hacky ways of doing it but there is a risk element there. I would recommend simply creating and attaching a 50Gig ebs volume if you simply need a second disk.

Thank you for your kind and accurate reply. – JT Kon Feb 12 '23 at 07:20 — JT Kon, Feb 12 '23 at 07:20

I want to resize my linux root volume to create a separate partition. (aws ec2)

1 Answers1