linux-kernel - Re: Copy on write hard links?

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: <CAFLxGvzSSTbrw1HvoOaQBcPZxRbQmpiwjfbGCQtpLN7M9S93Fg@mail.gmail.com>
Date:	Wed, 25 Sep 2013 16:37:23 +0200
From:	richard -rw- weinberger <richard.weinberger@...il.com>
To:	Thomas Meyer <thomas@...3r.de>
Cc:	Rob Landley <rob@...dley.net>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: Copy on write hard links?

On Wed, Sep 25, 2013 at 4:28 PM, Thomas Meyer <thomas@...3r.de> wrote:
> Am Mittwoch, den 25.09.2013, 08:59 -0500 schrieb Rob Landley:
>> On 09/24/2013 01:36:56 PM, Thomas Meyer wrote:
>> > Hi,
>> >
>> > Is there such a thing?
>>
>> In the kernel's vfs layer?
>
> Yes, that would be a nice feature!

You mean reflinks?
Currently only OCFS2 and btrfs support them.
Both using a fs specific ioctl().
IIRC GNU cp uses the btrfs specific one if the --reflink parameter is used.

-- 
Thanks,
//richard
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/