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bug#31184: tail -f on Network FS not refreshing as soon as the file is c
From: |
Pádraig Brady |
Subject: |
bug#31184: tail -f on Network FS not refreshing as soon as the file is changed. |
Date: |
Wed, 2 May 2018 00:45:49 -0700 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 |
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
- bug#31184: tail -f on Network FS not refreshing as soon as the file is changed.,
Pádraig Brady <=
- bug#31184: tail -f on Network FS not refreshing as soon as the file is changed., Jewsco Pius Jacquez, 2018/05/02
- bug#31184: tail -f on Network FS not refreshing as soon as the file is changed., Pádraig Brady, 2018/05/03
- bug#31184: tail -f on Network FS not refreshing as soon as the file is changed., Jewsco Pius Jacquez, 2018/05/04
- bug#31184: tail -f on Network FS not refreshing as soon as the file is changed., Pádraig Brady, 2018/05/05
- bug#31184: tail -f on Network FS not refreshing as soon as the file is changed., Jewsco Pius Jacquez, 2018/05/08
- bug#31184: tail -f on Network FS not refreshing as soon as the file is changed., Jewsco Pius Jacquez, 2018/05/22
- bug#31184: tail -f on Network FS not refreshing as soon as the file is changed., Pádraig Brady, 2018/05/23