GNU bug report logs - #12498
tail: unrecognized file system

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Marius Bjørnstad <pmb <at> fa2k.net>
Subject: bug#12498: closed (Re: bug#12498: tail: unrecognized file system)
Date: Mon, 24 Sep 2012 07:03:02 +0000

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Your bug report

#12498: tail: unrecognized file system

which was filed against the coreutils package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 12498 <at> debbugs.gnu.org.

-- 
12498: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=12498
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Jim Meyering <jim <at> meyering.net>
To: Marius Bjørnstad <pmb <at> fa2k.net>
Cc: 12498-done <at> debbugs.gnu.org
Subject: Re: bug#12498: tail: unrecognized file system
Date: Mon, 24 Sep 2012 08:59:56 +0200

Marius Bjørnstad wrote:
> I get this message when doing tail -f on a file which is stored on ZFS.
>
> tail: unrecognized file system type 0x2fc12fc1 for `messages'. please
> report this to bug-coreutils <at> gnu.org. reverting to polling
>
> [I normally wouldn't report this as it's an unusual filesystem and tail
> -f still works fine, but I'll do it as it asked me to :]

Thank you for reporting that.  That was addressed not long ago.
Those changes will be in the upcoming coreutils-8.20 release:
[so I've marked the your auto-created issue as "done"]

From
  http://git.sv.gnu.org/cgit/coreutils.git/tree/NEWS

  ** Improvements
    ...

    stat and tail know about ZFS, VZFS and VMHGFS.  stat -f --format=%T now
    reports the file system type, and tail -f now uses inotify for files on
    ZFS and VZFS file systems, rather than the default (for unknown file
    system types) of issuing a warning and reverting to polling.  tail -f
    still uses polling for files on VMHGFS file systems.

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From: Marius Bjørnstad <pmb <at> fa2k.net>
To: bug-coreutils <at> gnu.org
Subject: tail: unrecognized file system
Date: Sun, 23 Sep 2012 21:56:54 +0100

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Dear tail developers,

I get this message when doing tail -f on a file which is stored on ZFS.

tail: unrecognized file system type 0x2fc12fc1 for `messages'. please
report this to bug-coreutils <at> gnu.org. reverting to polling

[I normally wouldn't report this as it's an unusual filesystem and tail
-f still works fine, but I'll do it as it asked me to :]

Best wishes,
Marius  Bjørnstad

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