linux-ext4 - Re: Tool to view extent metadata

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 for Android: free password hash cracker in your pocket

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

Message-ID: <20090710051929.GA17701@skywalker>
Date:	Fri, 10 Jul 2009 10:49:29 +0530
From:	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
To:	Manuel Benitez <rickyb@...gle.com>
Cc:	linux-ext4@...r.kernel.org
Subject: Re: Tool to view extent metadata

On Thu, Jul 09, 2009 at 03:17:00PM -0700, Manuel Benitez wrote:
> I'm currently evaluating the ext4 allocator and one thing I've come
> across is the lack of a tool that displays the exact structure of the
> extents making up a file. I've found plenty of tools that will tell me
> how many contiguous segments a file contains, but nothing so far to
> let me see the actual makeup of the extents that map the inode to the
> blocks that comprise the file. Have I just missed something obvious,
> or would this be something worth me spending some time doing?
> 
> If so, one option would be to either modify the stat command or add a
> similar command in debugfs to show the extents from the roots through
> the root down to the leafs. Anyone have preferences or opinions?
> 


tst_exents in lib/ext2fs/ provide a debugfs similar interface. There are
commands for inode, root etc

-aneesh
--
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