Date: Tue, 28 Feb 2012 08:44:55 +0000 From: Matthew Seaman <m.seaman@infracaninophile.co.uk> To: freebsd-questions@freebsd.org Subject: Re: "find" not traversing all directories on a single zfs file system Message-ID: <4F4C9407.6090507@infracaninophile.co.uk> In-Reply-To: <4F4C3A3A.9080903@weogeo.com> References: <4F4BFB09.9090002@weogeo.com> <4F4C094C.1010900@infracaninophile.co.uk> <4F4C3A3A.9080903@weogeo.com>
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On 28/02/2012 02:21, Robert Banfield wrote:
> I have some additional information that I didnt see before actually
> digging into the log file. It is quite interesting. There are 82,206
> subdirectories in one of the folders. Like this:
>
> /zfs_mount/directoryA/token[1-82206]/various_tileset_files
>
> When looking at the output of find, here is what I see:
>
> Lines 1-9996943: The output of find, good as good can be
> Lines 9996944-10062479: Subdirectory entries only, it traversed none of
> them.
>
> Notice 10062479-9996944+1 = 65536 = 2^16
>
> So, of the 82206 subdirectories, the first 82206-2^16 were traversed,
> and the final 2^16 were not. The plot thickens...
Now this is very interesting indeed. 80,000 subdirectories is quite a
lot.. As is a grand total of more than 10,000,000 files.
Hmmm... and you see the find problem just when searching within the
structure under directoryA? I think you have found a bug, although
whether it is in find(1), the filesystem or elsewhere is not clear.
Given that 'ls -R' shows the same problem, the bug could be in fts(3).
Still, that's a testable hypothesis. Let me see if I can reproduce the
problem.
Cheers,
Matthew
--
Dr Matthew J Seaman MA, D.Phil. 7 Priory Courtyard
Flat 3
PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate
JID: matthew@infracaninophile.co.uk Kent, CT11 9PW
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