GNU bug report logs - #31184
tail -f on Network FS not refreshing as soon as the file is changed.

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Message #8 received at 31184 <at> debbugs.gnu.org (full text, mbox):

From: Pádraig Brady <P <at> draigBrady.com>
To: Jewsco Pius Jacquez <JewscoPius.Jacquez <at> Amdocs.com>, 31184 <at> debbugs.gnu.org
Subject: Re: bug#31184: tail -f on Network FS not refreshing as soon as the
 file is changed.
Date: Tue, 17 Apr 2018 00:29:18 -0700

On 16/04/18 10:11, Jewsco Pius Jacquez wrote:
> Hello,
> 
> We have a legacy application that is using tail -f command in the application and is running in Redhat 9 under a shared Samba filesystem.
> 
> We want to migrate the application to RHEL7 and we noticed that the tail -f command here is not refreshing as soon as the file get changed. In Redhat 9, it is working fine, every write on the file got reflected straight away(no waiting interval).
> 
> Is there a way that we can make the tail -f working as it was in Redhat 9? For this reason, we are not able to migrate our Legacy application.

To get around the issue, the undocumented ---disable-inotify option may help
(note the three dashes)

If that does help then there is an issue with the misdetection
of a known file system as local, when it should be treated as remote.
Can you show the file system type for the file you're trying to tail, using:

  stat -f -c '%t %T' /path/to/your/file

cheers,
Pádraig

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