Access/modification time set failed on: ./var/empty


I run three jails on a FreeBSD 11-release host, and manage them with ezjail. One of the jails generates an error when attempting to archive it.

ezjail-admin stop reminder

ezjail-admin archive reminder

pax: Access/modification time set failed on: ./var/empty <Operation not permitted>
Warning: Archiving jail reminder was not completely successful.\n  Please refer to the output above for problems the archiving tool encountered.\n  You may ignore reports concerning setting access and modification times.\n  You might want to check and remove /usr/jails/ezjail_archives/reminder-201701300002.32.tar.gz.Warning: Archiving jail reminder was not completely successful. For a running jail this is not unusual.

I tried running
chflags noschg /var/empty
on the host but still the error occurs.

How can I resolve this issue?


I get the same warning for one of my jails.
This warning was not present in the past and no modifications have been made by me.
1. does anyone know when/why this started
2. how to suppress?

Please advice
I have the same thing on all jails .

The real question is in the second part of the message:
Warning: Archiving jail reminder was not completely successful.​

I am not supposed to assume that a mere empty folder will not be an impediment to a successful recovery from an archive.
This is definitely needs to be addressed. But where? Which bug place? What code base is responsible for this?
I'm sorry I never updated this post, so in short what I did was, attempt to restore the jails from said archives and I found that the restore worked without an issue. Its just an empty folder and a seemingly useless message about it.