linux-ext4 - Re: Files full of zeros with coreutils-8.11 and xfs (FIEMAP related?)

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]

Message-ID: <20110419140909.GD3030@thunk.org>
Date:	Tue, 19 Apr 2011 10:09:09 -0400
From:	Ted Ts'o <tytso@....edu>
To:	Dave Chinner <david@...morbit.com>
Cc:	Yongqiang Yang <xiaoqiangnk@...il.com>,
	Andreas Dilger <adilger@...ger.ca>,
	Eric Sandeen <sandeen@...deen.net>, xfs-oss <xfs@....sgi.com>,
	"coreutils@....org" <coreutils@....org>,
	"linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org>,
	Pádraig Brady <P@...igbrady.com>,
	Markus Trippelsdorf <markus@...ppelsdorf.de>
Subject: Re: Files full of zeros with coreutils-8.11 and xfs (FIEMAP
 related?)

On Tue, Apr 19, 2011 at 05:45:38PM +1000, Dave Chinner wrote:
> You are *not listening*. There is no #2. FIEMAP returns the extent
> state _on disk_ at the time of the call.

Dave, you're being rather strident about your insistence about what
FIEMAP's semantics are.  Part of the problem here is that it's *not*
clear or settled.

If it really is the state _on_ _disk_, does XFS really have a DELALLOC
bit _on_ _disk_?

					- Ted
--
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