linux-ext4 - Re: What is fragment in ext3/4 ?

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Sat, 04 Aug 2007 00:20:38 +0800
From:	Coly Li <colyli@...il.com>
To:	Eric Sandeen <sandeen@...hat.com>
CC:	Andreas Dilger <adilger@...sterfs.com>, linux-ext4@...r.kernel.org
Subject: Re: What is fragment in ext3/4 ?

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Eric Sandeen wrote:
> 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?  :)

I agree with this idea. It seems we will never implement it in future,
once "fragment" packed into inode.

Coly

> 
> -Eric
> 
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.2 (GNU/Linux)
Comment: Using GnuPG with SUSE - http://enigmail.mozdev.org

iD8DBQFGs1XWuTp8cyZ5lTERAoFSAJsE4noHvOm77i0BKWiw5L1DDAnLKgCfXKcv
uL2ZZDiPJYUDWpKWwtIf1uo=
=bGt4
-----END PGP SIGNATURE-----
-
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html