linux-ext4 - Re: File limit inside a single directory

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Message-ID: <20150213185253.GB26115@thunk.org>
Date:	Fri, 13 Feb 2015 13:52:53 -0500
From:	Theodore Ts'o <tytso@....edu>
To:	suntrop@....de
Cc:	Andreas Dilger <adilger@...ger.ca>,
	Eric Sandeen <sandeen@...hat.com>,
	"linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org>
Subject: Re: File limit inside a single directory

On Fri, Feb 13, 2015 at 05:49:22PM +0100, suntrop@....de wrote:
> Thanks guys. I was afraid of having a couple 100K (at most). The
> server support team told me not to have more than 10 to 20K. There
> seems to be a misconception (for me and people from the CMS) about
> the 32K subdirectory limit, but this ins't for files/folders within
> a single directory but rather nested directories like
> /1/2/3.../32000

In general the limitation you will hit first is one of performance,
rather than a hard limit.  Using nested directories, i.e.,
/home/t/y/t/tytso will generally be a performance win if you can do
it.

Cheers,

					- Ted
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