Warning: Disk Utilization is High is seen on VCF Operations for Networks Platform appliances

Products

• VCF Operations for Networks

Issue/Introduction

1. "Warning: Disk Utilization is high" is seen on VCF Operations for Networks Appliances.  
   
   
2. Refer to below 2 screenshots:
   
   
   
   
   
3. Above warning can be seen on Clustered or non Clustered VCF Operations for Networks platform node(s)
   
   
4. On vCenter when you click edit setting it shows 2 disk added to the appliances as new disk(s), but VCF Operations for Networks detects only 1 TB of disc.
   
   This can be identified by Navigating to UI and looking at the platform node(s) properties, see screenshot below and see the Total disc shows 1002.1 which is 1 TB.
   
   
   
   

5. Another symptom may be that a "df" command at the command line when logged into the platform node with the "support" user (then switching to the Ubuntu user using the "ub" command), shows that the "/dev/mapper/vg-var" partition is at 77%.  

 

NOTE:  VCF Operations for Networks was formerly named Aria Operations for Networks (AON), and prior to that was named vRealize Network Insight (vRNI).

Environment

VCF Operations for Networks

Cause

• This situation occurs if either disc is added when appliances are power off and after after adding the disc the appliance was powered on the cron job was able to detect the disc but unable to expand to /var partition.
• This can also occur if disc were added with nodes powered on and after immediately add disc the nodes were rebooted and cron job was unable to auto expand the disc to /var log.

Resolution

To fix this issue with appliance disc a manual extension of disc to /var partition is needed by identifying the correct disc state.

If you have encountered this issue, ensure you DO NOT perform any manual shutdown or reboot procedure of Platform Node(s).

Open a support case with Broadcom Support to review your VCF Operations for Networks deployment. For more information, see Creating and managing Broadcom support cases. 

While opening case include outputs of below commands:

1. Login to an SSH session on Platform Node in question as the support user 
2. Switch to the Ubuntu user using command ub
3. Run the following commands
   
   

   sudo pvs
   sudo lvs
   sudo vgdisplay
   sudo lvdisplay
   sudo lsblk
   sudo fdisk -l

   Please Note: Outputs of above commands are expected to be longer hence copy/paste the outputs to a Notepad file, save it and upload to this Case for support team to review further.