How to enable quotas on UEFI systems

Introduction

If you have attempted to enable quotas after following these guides with no success, then it likely means you have a system that utilizes UEFI firmware.

• How to enable quotas
• Enabling XFS quotas
• Enable quotas on XFS manually

Procedure

1. Run the following command to verify that the server is a UEFI System.

   [ -d '/sys/firmware/efi/' ] && echo "UEFI System" || echo "Standard BIOS System"

2. Create a backup of your EFI grub configuration.

   cp -avx /boot/efi/EFI/centos/grub.cfg /boot/efi/EFI/centos/grub.cfg.$(date +%s)

3. Rebuild the Grub configuration

   grub2-mkconfig -o /boot/efi/EFI/centos/grub.cfg

4. Confirm that quotas show as enabled in the new configuration using the following command.

   grep quota /boot/efi/EFI/centos/grub.cfg

   If quotas are configured, the output of the above command should be similar to the following.

   linux /vmlinuz root=UUID=bc7453b1 ro rd.auto crashkernel=auto vga=normal nomodeset rdloaddriver=raid1 rootflags=uquota
   linux /vmlinu root=UUID=bc7453b1 ro rd.auto crashkernel=auto vga=normal nomodeset rdloaddriver=raid1 rootflags=uquota

5. Reboot the server.