Subject: Unrecognized file system using tail

From: Norbert van Nobelen <[email-masked]>
Date: Tue, 16 Sep 2014 16:19:09 -0700

Error:
tail: unrecognized file system type 0x2fc12fc1 for ‘catalina.out’. please
report this to [email-masked]. reverting to polling

File system in use: ZFS (www.zfsonlinux.org, version 0.6.3)

tail --version
tail (GNU coreutils) 8.17
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html
>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Written by Paul Rubin, David MacKenzie, Ian Lance Taylor,
and Jim Meyering.

Working of tail -f "file" seems to be completely normal. tail -F not tested.