LVM volume is wrongly sized ( PMM 1.x)

User Impact:
AMI image stop working in 1-3 days when all space (1Gb) taken and not expanded automatically

Steps to Reproduce:

1. Start PMM 2.2.0 AMI (ami-09ff4fe55800a29d9)
2. Open AWS Console and check Volume for this instance
3. ssh to the machine and check disks

Actual Result:

See screenshot

Expected result:

Additional info: I re-checked PMM2 on AWS Marketplace with the same result