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How to increase the root partition size on Fedora
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increase_root_fedora.md

How to increase the root partition size on Fedora

Boot up with an Fedora Live USB stick.

  1. Run vgs to check if there's any space:
$ sudo vgs
  VG     #PV #LV #SN Attr   VSize    VFree
  fedora   1   3   0 wz--n- <237.28g    0
  1. If there is you can just run:
lvresize -L +5G --resizefs /dev/mapper/fedora-root

NB: Remember to check where your fedora root and home partition is mounted by running fdisk -l.

  1. If you don't have any free VFree space, you can shrink your home partition and then extend your root partition afterwards.

To scrink your home partition run:

lvresize -L -10G --resizefs /dev/mapper/fedora-home

And then to extend your root partition run:

lvresize -L +10G --resizefs /dev/mapper/fedora-root
@AkashRajpurohit
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AkashRajpurohit commented Mar 1, 2021 •
edited
Loading

Trying this under Fedora 31 ... Ran into a problem with /home not being able to be unmounted.

[root@frank ~]# vgs
  VG       #PV #LV #SN Attr   VSize    VFree
  fedora     1   3   0 wz--n- <930.51g    0
  fedora00   1   3   0 wz--n-   <1.82t    0
[root@frank ~]# lvresize -L -20G --resizefs /dev/mapper/fedora-home
Do you want to unmount "/home" ? [Y|n] y
umount: /home: target is busy.
fsadm: Cannot proceed with mounted filesystem "/home".
  /usr/sbin/fsadm failed: 1
  Filesystem resize failed.
[root@frank ~]# lvresize -L -20G --resizefs /dev/mapper/fedora-home
Do you want to unmount "/home" ? [Y|n] n
fsadm: Cannot proceed with mounted filesystem "/home".
  /usr/sbin/fsadm failed: 1
  Filesystem resize failed.
[root@frank ~]#

If you are still facing this issue, login with root user and try it again.
Please note that login with root means logging out as your non root user and login with credentials root and <YOUR_PASSWORD>. If you are trying the sudo su command to switch the user you still would get this error.

Reason: The non root user has mounted /home directory and possibly the applications running are accessing the file contents inside of /home so that's why we cannot unmount it. Login with root user will solve this problem.

I will post a detailed blog about this on my blogging site as well.
Regards.

Edit:
Written post for this process -

@AlexandreBiondi
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Great ! Thanks for sharing !

@Darmanitan
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working on fedora 36, thanks a lot 😸

@bjahns
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bjahns commented May 11, 2022

Once I figured out that I'll never see the BIOS screen over HDMI through my KVM (and needed to find a stupid VGA cable....) This worked great on Fedora 35 booting off a Fedora 36 live USB key. Thanks so much for posting!

@linZHank
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linZHank commented Aug 8, 2022

Still works on Fedora 36. Thank you so much!

@padys
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padys commented Nov 26, 2022

Works fine on Fedora 37. Thanks!

In case of encrypted disk, unlocking is a must first. I've followed this article: https://thequantitative.medium.com/resize-an-encrypted-partition-without-breaking-your-linux-system-6ef475619745

@FatCatLikesBeer
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This is exactly what I needed. I just ran into this issues while updating my 4 month old machine. I built my Fedora Server with a brand new 1TB drive, but apparently I only had 15GB assigned to root. Ran just the above code and it worked just fine! Thank you thank you!

@shakib98
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thank you worked in fedora 25

@Apple2007
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Thank you! This was just what I needed!

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