🛠️Fix Quotas on OpenVZ Node and VPS

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Applies to:
OpenVZ 6, OpenVZ 7, and Virtuozzo 7
Requirements:
Root access to host node and optionally to the container (VPS)

🧰 Step 1: Enable Quotas on the Host Node

For OpenVZ 6:

  1. Check or set quota limit globally: grep QUOTAUGIDLIMIT /etc/vz/vz.conf || echo "QUOTAUGIDLIMIT=100" >> /etc/vz/vz.conf
  2. Reload quota settings:
    No reboot is required, but containers must be restarted individually.

For OpenVZ 7 / Virtuozzo 7:

  1. Check current mount: mount | grep /vz
  2. Edit /etc/fstab and add usrquota,grpquota to your /vz or relevant partition: /dev/mapper/centos-home /vz ext4 defaults,usrquota,grpquota 0 2
  3. Remount with quota support: mount -o remount /vz

⚙️ Step 2: Enable Quotas for a Specific VPS

OpenVZ 6:

Replace CTID with your container ID:

vzctl stop CTID
vzctl set CTID --quotaugidlimit 100 --save
vzctl start CTID

OpenVZ 7 / Virtuozzo 7:

Replace CTID with your container ID or name:

prlctl stop CTID
prlctl set CTID --quotaugidlimit 100 --save
prlctl start CTID

🔍 Step 3: Verify or Check Quotas Inside the VPS

  1. Access the VPS:
    • OpenVZ 6: vzctl enter CTID
    • OpenVZ 7: prlctl exec CTID /bin/bash
  2. Install quota tools (if not already installed): yum install quota -y # CentOS/RHEL apt install quota -y # Debian/Ubuntu
  3. Check usage: repquota -a quota -u username

🛠 Troubleshooting

  • Run quota reinitialization if necessary: OpenVZ 6: vzquota drop CTID vzquota setup CTID vzquota on CTID vzctl restart CTID
  • Verify quotaugidlimit is greater than 0: vzctl set CTID --quotaugidlimit 100 --save # OpenVZ 6 prlctl set CTID --quotaugidlimit 100 --save # OpenVZ 7
  • Ensure your file system supports quotas (ext4/xfs with quota enabled).
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