From: Chris Wedgwood <cw@f00f.org>
To: Bernd Eckenfels <ecki-news2004-05@lina.inka.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: XFS: how to NOT null files on fsck?
Date: Mon, 12 Jul 2004 16:14:21 -0700 [thread overview]
Message-ID: <20040712231421.GA24184@taniwha.stupidest.org> (raw)
In-Reply-To: <E1Bk9pA-0008HQ-00@calista.eckenfels.6bone.ka-ip.net>
On Tue, Jul 13, 2004 at 01:03:04AM +0200, Bernd Eckenfels wrote:
> open("test.txt", O_WRONLY|O_CREAT|O_TRUNC, 0666) = 3
old data blocks release (truncated), transaction for this written to
journal more-or-less synchronously
> write(3, "test\ntest\n", 10) = 10
> close(3) = 0
new data sitting in page-cache, not written to disk (in the case of
XFS the new blocks probably aren't even allocted at this stage). the
file size being extended is i assume recorded in the journal though.
if you crash now, you see nulls or a truncated file, i think this is
what people are getting with dotfiles
KDE is especially good at triggering this it seems
--cw
next prev parent reply other threads:[~2004-07-12 23:14 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-07-05 5:47 XFS: how to NOT null files on fsck? Norberto Bensa
2004-07-09 16:37 ` L A Walsh
2004-07-09 21:59 ` Chris Wedgwood
2004-07-10 18:33 ` L A Walsh
2004-07-10 18:43 ` Chris Wedgwood
2004-07-10 21:24 ` Bernd Eckenfels
2004-07-11 21:54 ` Helge Hafting
2004-07-12 17:56 ` H. Peter Anvin
2004-07-12 19:59 ` Chris Wedgwood
2004-07-12 20:32 ` H. Peter Anvin
2004-07-12 22:29 ` Bernd Eckenfels
2004-07-12 23:03 ` Bernd Eckenfels
2004-07-12 23:14 ` Chris Wedgwood [this message]
2004-07-10 18:43 ` Jan Knutar
2004-07-10 18:46 ` Chris Wedgwood
2004-07-10 18:55 ` Norberto Bensa
2004-07-10 19:19 ` Chris Wedgwood
2004-07-12 21:20 ` Chris Wedgwood
2004-07-12 22:40 ` L A Walsh
2004-07-12 22:53 ` Chris Wedgwood
2004-07-13 1:44 ` Bernd Eckenfels
2004-07-13 5:24 ` Chris Wedgwood
[not found] ` <2hgxc-5x9-9@gated-at.bofh.it>
2004-07-13 7:25 ` Anton Ertl
2004-07-13 8:09 ` Chris Wedgwood
2004-07-13 9:34 ` Anton Ertl
2004-07-13 9:53 ` Chris Wedgwood
2004-07-13 10:27 ` Tim Connors
2004-07-13 10:38 ` ismail dönmez
2004-07-13 11:16 ` Nick Piggin
2004-07-13 12:52 ` ismail dönmez
2004-07-13 10:58 ` Chris Wedgwood
2004-07-13 13:33 ` Anton Ertl
2004-07-13 20:32 ` Chris Wedgwood
2004-07-13 22:42 ` Bernd Eckenfels
2004-07-14 18:49 ` Anton Ertl
2004-07-14 19:00 ` Chris Wedgwood
2004-07-13 22:24 ` Helge Hafting
2004-07-13 22:39 ` Chris Wedgwood
2004-07-13 23:23 ` Bernd Eckenfels
2004-07-14 18:53 ` Anton Ertl
2004-07-10 19:33 ` Andreas Schwab
2004-07-10 19:40 ` Chris Wedgwood
2004-07-10 19:46 ` Norberto Bensa
2004-07-10 20:03 ` Chris Wedgwood
2004-07-11 1:21 ` Gopikrishnan Sidhardhan
2004-07-29 1:30 ` Nathan Scott
2004-08-03 18:31 ` L A Walsh
2004-08-04 0:48 ` Andi Kleen
2004-08-04 6:37 ` L A Walsh
2004-08-05 8:16 ` Helge Hafting
2004-08-06 1:10 ` Nathan Scott
2004-08-06 1:34 ` Andrew Morton
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