I tried and the --follow=name doesn't refresh either. The stat output is changing.
[jjacquez@cmilsbtest03 ~]$ tail --follow=name /media/samba/test.file append Wed May 2 08:35:54 CDT 2018 append Wed May 2 08:35:54 CDT 2018 append Wed May 2 08:35:54 CDT 2018 append Wed May 2 08:35:54 CDT 2018 append Wed May 2 08:35:54 CDT 2018 append Wed May 2 08:35:54 CDT 2018 append Wed May 2 08:35:54 CDT 2018 append Wed May 2 08:35:54 CDT 2018 append Wed May 2 08:35:54 CDT 2018 append Wed May 2 08:35:55 CDT 2018 ^C [jjacquez@cmilsbtest03 ~]$ tail --follow=name /media/samba/test.file append Wed May 2 08:36:01 CDT 2018 append Wed May 2 08:36:01 CDT 2018 append Wed May 2 08:36:01 CDT 2018 append Wed May 2 08:36:02 CDT 2018 append Wed May 2 08:36:02 CDT 2018 append Wed May 2 08:36:02 CDT 2018 append Wed May 2 08:36:02 CDT 2018 append Wed May 2 08:36:02 CDT 2018 append Wed May 2 08:36:02 CDT 2018 append Wed May 2 08:36:02 CDT 2018 ^C [jjacquez@cmilsbtest03 ~]$ while :; do stat -c '%s' /media/samba/test.file; sleep 1; done 1649717 1650077 1650401 1650761 1651121 1651445 1651769 1652093 1652417 About the reverting the patch, so I need to download the source and patch it? cd coreutils-8.29 && wget 'https://github.com/coreutils/coreutils/commit/7fc7206.patch' -O- | patch -R -p1 && make Thanks, Jewsco -----Original Message----- From: Pádraig Brady [mailto:p...@draigbrady.com] Sent: Wednesday, May 2, 2018 2:46 AM To: Jewsco Pius Jacquez <jewscopius.jacq...@amdocs.com>; 31...@debbugs.gnu.org Subject: Re: bug#31184: tail -f on Network FS not refreshing as soon as the file is changed. On 19/04/18 07:43, Jewsco Pius Jacquez wrote: > Pádraig, thanks for your response. > > In my reproducer environment, it doesn't totally update. RHEL7 Samba server, > RHEL6 Samba client. > > Unless I provided the extra interval parameter. You said you used: tail --follow=name --max-unchanged-stats=1 --sleep-interval=1 The --sleep-interval=1 having a difference is confusing as that already defaults to one second. Also --max-unchanged-stats=1 should only make things more responsive. I would have expected only --follow=name to have a significant difference to the data that is eventually output. Anyway there may be an issue with st_size updating on your system. I.E. if stat() didn't update st_size on this remote file then a new change that protects against a related issue on glusterfs may be impacting here. One could check that by reverting the patch and rebuilding in your previous build dir like: cd coreutils-8.29 && wget 'https://github.com/coreutils/coreutils/commit/7fc7206.patch' -O- | patch -R -p1 && make One might also check this externally to tail(1) by repeatedly running the following and seeing does the number correlate with remote changes: stat -c '%s' /media/samba/test.file cheers, Pádraig This message and the information contained herein is proprietary and confidential and subject to the Amdocs policy statement, you may review at https://www.amdocs.com/about/email-disclaimer <https://www.amdocs.com/about/email-disclaimer>
