linux-ext4 - Re: No space left on device after many files creation

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Message-ID: <20100412224429.GN1849@thunk.org>
Date:	Mon, 12 Apr 2010 18:44:29 -0400
From:	tytso@....edu
To:	Eric Sandeen <sandeen@...hat.com>
Cc:	cy6erGn0m <cy6ergn0m@...il.com>, linux-ext4@...r.kernel.org
Subject: Re: No space left on device after many files creation

On Mon, Apr 12, 2010 at 05:00:37PM -0500, Eric Sandeen wrote:
> cy6erGn0m wrote:
> > In the past I have done the same test for ext3 and it was created ~10M
> > files in one firectory at working filesystem (/home) and it was no
> > issues reached.
> > 
> > On ext4 i found inodes max size is limited as you wrote:
> > [root@...achine sandbox]# df -i /e4
> > Файловая система      Инодов   Испол   Своб  Исп % смонтирована на
> > (file system/inodes/used/free/used%/mounted on)
> > /dev/sda4               1,8M    1,8M       0  100% /e4
> > [root@...achine sandbox]#
> > 
> > Why inodes count limit is so small by default? Is it depends on
> > partition size?
> 
> it does depend on partition size; the inode_ratio = 16384 in mke2fs.conf
> says 1 inode per 16k of filesystem space.

1.8 million inodes is hardly small.....  most people complain that
we're reserving too much space for inodes.  

Cy6erGn0m, What is your use case where the average file size for your
20G partition is smaller that 16k?

						- Ted
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