GNU bug report logs - #34173
Tail File System Error on overlayfs

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: mike <at> nerdcore.net
To: bug-coreutils <at> gnu.org
Subject: Tail File System Error on overlayfs
Date: Tue, 22 Jan 2019 15:03:55 -0500

I'm using a Docker environment which has a rootfs mounted using the
"overlay" filesystem on Linux kernel 4.4.0-141-generic (Ubuntu 16.04) on
amd64.

Inside the Docker environment I tried the usual "tail follow" command:

  tail -f /var/log/nginx/error.log

This spat out the error message:

==> /var/log/nginx/error.log <==
tail: unrecognized file system type 0x794c7630 for
'/var/log/nginx/error.log'. please report this to bug-coreutils <at> gnu.org.
reverting to polling


And it seemed to work OK after that.

Message #10 received at 34173-done <at> debbugs.gnu.org (full text, mbox):

From: Bernhard Voelker <mail <at> bernhard-voelker.de>
To: mike <at> nerdcore.net, 34173-done <at> debbugs.gnu.org
Subject: Re: bug#34173: Tail File System Error on overlayfs
Date: Tue, 22 Jan 2019 23:43:33 +0100

On 1/22/19 9:03 PM, mike <at> nerdcore.net wrote:
> tail: unrecognized file system type 0x794c7630 for
> '/var/log/nginx/error.log'. please report this to bug-coreutils <at> gnu.org.
> reverting to polling

Thank you for the report.

This has been fixed in coreutils version 8.25 - meaning you
are likely using an older version.

For more details, see here:
  https://www.gnu.org/software/coreutils/filesystems.html

Have a nice day,
Berny

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