From: Chris Mason <chris.mason@oracle.com>
To: Sage Weil <sage@newdream.net>
Cc: linux-btrfs@vger.kernel.org, hch@lst.de
Subject: Re: [RFC] big fat transaction ioctl
Date: Wed, 11 Nov 2009 09:54:35 -0500 [thread overview]
Message-ID: <20091111145435.GB5566@think> (raw)
In-Reply-To: <Pine.LNX.4.64.0911101143120.31818@cobra.newdream.net>
On Tue, Nov 10, 2009 at 12:12:14PM -0800, Sage Weil wrote:
> Hi all,
>
> This is an alternative approach to atomic user transactions for btrfs.
> The old start/end ioctls suffer from some basic limitations, namely
>
> - We can't properly reserve space ahead of time to avoid ENOSPC part
> way through the transaction, and
> - The process may die (seg fault, SIGKILL) part way through the
> transaction. Currently when that happens the partial transaction will
> commit.
I like this much more than providing a journal start/stop to userland.
If we can get Christoph to ack the exports we can work on the interface
in general.
-chris
next prev parent reply other threads:[~2009-11-11 14:54 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-10 20:12 [RFC] big fat transaction ioctl Sage Weil
2009-11-10 20:44 ` Andrey Kuzmin
2009-11-10 22:13 ` Sage Weil
2009-11-11 0:49 ` Jeremy Fitzhardinge
2009-11-11 5:15 ` Sage Weil
2009-11-11 15:03 ` Chris Mason
2009-11-11 15:41 ` Andrey Kuzmin
2009-11-11 15:55 ` Chris Mason
2009-11-11 17:19 ` Sage Weil
2009-11-12 3:56 ` Andrey Kuzmin
2009-11-11 14:54 ` Chris Mason [this message]
2009-11-11 18:22 ` Zach Brown
2009-11-11 22:22 ` Sage Weil
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