why does using System Manager aws:runShellScript to execute "df -h" not show EFS mounts

Hello there,

Thank you for reaching out to us and posting your question in Re:Post. I tested AWS-RunShellScript Command document in a RHEL 7.9 instance to run df -h. I mounted EFS using both nfs4 and efs filesystem type. In either case the df -h command displayed the EFS mounts. You may check:

1. If the EFS filesystem is mounted when the Systems Manager document executes.
2. If you are using the latest Systems Manager agent. Ref: https://docs.aws.amazon.com/systems-manager/latest/userguide/agent-install-rhel.html

If this is reproducible, please feel free to open a Support case with us and we can investigate further.