Increasing the virtual machine disk volume size

Last Updated : Jun 08, 2026 |

About this task

Use this procedure to increase the size of a disk volume. The upgrade process for an OVA from a previous release requires an increase in the size of one or more disk volumes.

In rare circumstances, Avaya support might recommend specific increments in disk volume sizes to address unexpected disk engineering issues.

Important:

You can only allocate free disk space to disk volumes if data encryption is disabled on Avaya Aura® Web Gateway. If data encryption is enabled, you cannot allocate free disk space.

Before you begin

Increase the size of the virtual disks that host the volumes to be increased. This process makes new disk space available. For example, if the volume requires an additional 20.0 GiB of space and the host disk is currently 50.0 GiB, then you must change the size of the host disk to 70.0 GiB.

Procedure

If the virtual machine is not running, then power it up.
Scan the disks on the virtual machine to detect newly available disk space by running the following command:
```
sys volmgt --scan
```
Tip:
For more information about this command, you can use the following commands:
- For syntax help: sys volmgt -h
- For verbose help: sys volmgt -hh
After the scan is complete, an updated file system summary is displayed. The newly available disk space is reported in the Disk > Free column.
Allocate all of the unused space on the disk to the target volume by running the following command:
```
sys volmgt --extend <volume> --remaining
```
For <volume>, specify the name of the volume as it appears in the Volume > Name column.

All --extend operations are run as background tasks.
1. To monitor the status of the operation in progress or of the last completed operation, run the following command:
```
sys volmgt --monitor less
```
2. To gather all volume management logs into a zip file in the current working directory, run the following command:
```
sys volmgt --logs
```
3. If a disk has multiple volumes and more than one volume is being increased in size, use one of the following commands to allocate a specific amount of unused space to a volume:
```
sys volmgt --extend <volume> <x>m
sys volmgt --extend <volume> <x>g
sys volmgt --extend <volume> <x>t
```
  In these commands, m means megabytes, g means gigabytes, t means terabytes, and <x> is a decimal number. For example, the following command increments the /var/log volume by 10.5 GiB:
```
sys volmgt --extend /var/log 10.5g
```
Verify that the new space has been allocated to the volume by running the following command:
```
sys volmgt --summary
```
Due to disk overhead, the size of the volume reported under the Volume > LVM Size column will never exactly match the size reported under the Volume > File System > Size column.
1. If you suspect that the file system size is not correct, verify that the operation is complete by running the following command:
```
sys volmgt --status
```
2. If the status is reported as Complete, you can correct the situation using --extend without an increment value:
```
sys volmgt --extend /var/log
```
  This operation does not add more space to the volume that hosts the file system. Instead, it reissues the command to make full use of the current volume.
  Tip:
  Similar to using --extend to increase volume sizes, you can also monitor the --extend operation and gather logs using the following commands:
```
sys volmgt --monitor less
sys volmgt --logs
```

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