Managing Quotas for Btrfs Subvolumes With Quota Groups

Note:

Be aware that the quota groups feature is available as a Technology Preview only in Oracle Linux. Working with this feature requires that you boot the system by using UEK R7 or later.

1. Use the btrfs quota enable command to enable quotas on a volume:

   Enable quotas by running following command on a newly created Btrfs file system before any creating any subvolumes:

   sudo btrfs quota enable volume

2. Assign a quota-group limit to a subvolume by using the btrfs qgroup limit command:

   The following example shows how you would use this command:

   sudo btrfs qgroup limit 1g /myvol/subvol1

   sudo btrfs qgroup limit 512m /myvol/subvol2

3. To find out the quota usage for a subvolume, use the btrfs qgroup show command.

   For example, run:

   btrfs qgroup show /myvol/subvol1