A damon process monitors VMs network characters, and reports statistical information periodly.
To make it works well, the following files should be exist:
- /var/vmstd/mac.list
- /var/run/write.1
- /var/run/vmstd.pid
- /var/vmstd/report.json
The /var/vmstd/mac.list is the records like 00:16:33:4d:5e:5f vmname.
The /var/run/write.1 's content is 1 or 0, the flag that
the daemon is write report to file /var/vmstd.report.json.
The /var/run/vmstd.pid is the lockfile to make sure that only one copy
of the daemon process in running in the system.
And the statistic information is periodically reported in file /var/vmstd/report.json.