Subject: bug#22977: tail: unrecognized file system type 0x794c7630

From: Alexey Feldgendler <[email-masked]>
Date: Thu, 10 Mar 2016 17:14:20 +0700

Hello!

I get this message from tail -f:

tail: unrecognized file system type 0x794c7630 for
‘/var/log/upstart/carbon_front.log’. please report this to
[email-masked]. reverting to polling

The relevant line from /proc/mounts:

overlay /var overlay
rw,relatime,lowerdir=/home/alexey/.hola_containers/empty.lower,upperdir=/home/alexey/.hola_containers/mounts/zs-graphite/var.upper,workdir=/home/alexey/.hola_containers/mounts/zs-graphite/var.upper.work
0 0

Kernel 4.3.0. Don't confuse the filesystem with “overlayfs” available in
older kernels.

I know from experiment that this filesystem does in fact need polling.

-- 
Alexey Feldgendler <[email-masked]>