From: Olaf van der Spek <olafvdspek@gmail.com>
To: Boaz Harrosh <bharrosh@panasas.com>
Cc: Nick Piggin <npiggin@gmail.com>, "Ted Ts'o" <tytso@mit.edu>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>,
linux-ext4@vger.kernel.org
Subject: Re: Atomic non-durable file write API
Date: Sun, 26 Dec 2010 17:02:33 +0100 [thread overview]
Message-ID: <AANLkTinaAtrCYfusv59T3FE5A45A77R8oTMPpJUJs03p@mail.gmail.com> (raw)
In-Reply-To: <4D17656B.7010603@panasas.com>
On Sun, Dec 26, 2010 at 4:55 PM, Boaz Harrosh <bharrosh@panasas.com> wrote:
> What if you use a soft link? wouldn't that solve all of your problems?
>
> - do your fsync/fdatasync of choice in a *backend thread* then at the return
> - point set to the new link, fsync the link it's very small, therefore fast.
> - Then delete the old source file.
>
> You need a simple "name-version" schema and the "name" is kept soft linked.
> (You might even skip the last step above and implement an undo stack, some
> background management caps on history size)
>
>>>
>>>> and this way has other
>>>> issues, like losing file meta-data.
>>>
>
> With soft links this is persevered?
>
> Same system can be used with lots of files. where the final switch is
> the set of a single soft-link say to a folder of related files.
Are you proposing to turn every single file into a symlink?
How would that solve the meta-data issue?
Olaf
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next prev parent reply other threads:[~2010-12-26 16:02 UTC|newest]
Thread overview: 69+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <AANLkTing7+SK+pavFehR4AGDbRRfFwvvzNxgWQ3zRp+O@mail.gmail.com>
2010-12-09 12:03 ` Atomic non-durable file write API Olaf van der Spek
2010-12-16 12:22 ` Olaf van der Spek
2010-12-16 20:11 ` Ric Wheeler
2010-12-18 22:15 ` Calvin Walton
2010-12-19 16:39 ` Olaf van der Spek
2010-12-23 15:49 ` Olaf van der Spek
2010-12-23 21:51 ` Neil Brown
2010-12-23 22:22 ` Ted Ts'o
2010-12-24 0:30 ` Christian Stroetmann
2010-12-24 0:48 ` Ted Ts'o
2010-12-24 1:00 ` Christian Stroetmann
2010-12-24 9:51 ` Ted Ts'o
2010-12-24 11:14 ` Olaf van der Spek
2010-12-24 11:25 ` Christian Stroetmann
2010-12-25 3:15 ` Ted Ts'o
2010-12-25 10:41 ` Olaf van der Spek
2010-12-25 11:33 ` Nick Piggin
2010-12-25 15:24 ` Olaf van der Spek
2010-12-25 17:25 ` Nick Piggin
2010-12-26 15:08 ` Olaf van der Spek
2010-12-26 15:55 ` Boaz Harrosh
2010-12-26 16:02 ` Olaf van der Spek [this message]
2010-12-26 16:27 ` Boaz Harrosh
2010-12-26 18:26 ` Olaf van der Spek
2010-12-26 16:43 ` Nick Piggin
2010-12-26 18:51 ` Olaf van der Spek
2010-12-26 22:10 ` Ted Ts'o
2010-12-27 0:30 ` Christian Stroetmann
2010-12-27 1:04 ` Ted Ts'o
2010-12-27 1:30 ` Christian Stroetmann
2010-12-27 2:53 ` Ted Ts'o
2010-12-27 10:21 ` Olaf van der Spek
2010-12-27 11:07 ` Marco Stornelli
2010-12-27 15:30 ` Christian Stroetmann
2010-12-27 19:07 ` Olaf van der Spek
2010-12-27 19:30 ` Christian Stroetmann
2010-12-28 17:22 ` Olaf van der Spek
2010-12-28 20:59 ` Neil Brown
2010-12-28 22:00 ` Greg Freemyer
2010-12-28 22:06 ` Olaf van der Spek
2010-12-28 22:15 ` Greg Freemyer
2010-12-28 22:28 ` Olaf van der Spek
2010-12-28 22:35 ` Neil Brown
2010-12-29 11:05 ` Dave Chinner
2010-12-28 22:10 ` Olaf van der Spek
2010-12-28 22:31 ` Neil Brown
2010-12-28 22:54 ` Olaf van der Spek
2010-12-28 23:42 ` Ted Ts'o
2010-12-29 9:09 ` Olaf van der Spek
2010-12-29 15:30 ` Christian Stroetmann
2010-12-29 15:41 ` Olaf van der Spek
2010-12-29 16:30 ` Christian Stroetmann
2010-12-29 17:14 ` Olaf van der Spek
2010-12-30 0:50 ` Neil Brown
2011-01-07 14:23 ` Olaf van der Spek
2010-12-27 4:12 ` Nick Piggin
2010-12-27 11:48 ` Olaf van der Spek
2010-12-27 12:43 ` Olaf van der Spek
2010-12-28 0:45 ` Ted Ts'o
2010-12-24 11:21 ` Christian Stroetmann
2010-12-24 11:17 ` Olaf van der Spek
2010-12-24 11:29 ` Christian Stroetmann
2010-12-24 11:30 ` Olaf van der Spek
2010-12-25 21:40 ` Neil Brown
2010-12-23 22:43 ` Dave Chinner
2010-12-23 22:47 ` Ted Ts'o
2010-12-26 9:59 ` Amir Goldstein
2010-12-26 15:23 ` Olaf van der Spek
2010-12-26 16:52 ` Nick Piggin
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