From: Eric Sandeen <sandeen@redhat.com>
To: Andreas Dilger <adilger@clusterfs.com>
Cc: Coly Li <colyli@gmail.com>, linux-ext4@vger.kernel.org
Subject: Re: What is fragment in ext3/4 ?
Date: Fri, 03 Aug 2007 11:05:52 -0500 [thread overview]
Message-ID: <46B35260.9000900@redhat.com> (raw)
In-Reply-To: <20070803000228.GO6142@schatzie.adilger.int>
Andreas Dilger wrote:
> On Aug 02, 2007 17:55 +0800, Coly Li wrote:
>> These days, when I read the source code of mke2fs, I found an option -f
>> to set the fragment size.
>>
>> But I can not find any explaining for ext3/4 framgment from google,
>> excepting someone saying ext2/3 does not support this feature.
>>
>> Can anyone tell me what is the function or purpose of fragment of ext
>> file system ?
>
> This is an obsolete concept from BSD that was never used by ext[234].
> Consider a "fragment" in this context to be the same as a "tail" for
> reiserfs. A very small file, or the end of a file that is less than
> a block.
There's a fair amount of code around this never-implemented concept;
should it be removed? :)
-Eric
next prev parent reply other threads:[~2007-08-03 16:06 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-08-02 9:55 What is fragment in ext3/4 ? Coly Li
2007-08-03 0:02 ` Andreas Dilger
2007-08-03 9:15 ` Coly Li
2007-08-03 16:05 ` Eric Sandeen [this message]
2007-08-03 16:20 ` Coly Li
2007-08-03 22:28 ` Andreas Dilger
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