CentOS 6 and /fastboot

Apr 26, 2018
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We have a lone (fully updated) CentOS 6 container running on a (fully updated 5.2-9) Proxmox host. Recently the container started creating /fastboot.

I cannot find anything in the CentOS system that could be creating this file. The file does not get created on a CentOS 7 container.

Is the file being created by Proxmox? If yes, from where?

Thanks again. :)