Hello,
tail ask me to send bugreport to your email address, and I am doing it.
When using Parallels 11 OS X with Vagrant and Ubuntu guest, got this error.
`tails` utility can't detect `prl_fs` filesystem.
tail: unrecognized file system type 0x7c7c6673 for 'file.log'. please report
this to address@hidden reverting to polling
# lsb_release -rd
Description: Ubuntu 14.04.3 LTS
Release: 14.04
coreutils 8.21-1ubuntu5.4
Also, I reported this bug to Ubuntu:
https://bugs.launchpad.net/ubuntu/+source/coreutils/+bug/1563283