As you can see (items marked bold), we have achieved our goal:
User quota state on /var/backup (/dev/vdb1vdb)
Accounting: '''ON'''
Enforcement: '''ON'''
Inode: #131 (3 1 blocks, 2 1 extents) Group quota state on /var/backup (/dev/vdb1vdb)
Accounting: OFF
Enforcement: OFF
Inode: #809717 132 (1 blocks, 1 extents) Project quota state on /var/backup (/dev/vdb1vdb)
Accounting: '''ON'''
Enforcement: '''ON'''
Inode: #809717 132 (1 blocks, 1 extents)
Blocks grace time: [7 days 00:00:30]
Inodes grace time: [7 days 00:00:30]