From: David Chinner <dgc@sgi.com>
To: Lachlan McIlroy <lachlan@sgi.com>
Cc: xfs-dev <xfs-dev@sgi.com>, xfs-oss <xfs@oss.sgi.com>
Subject: Re: [PATCH, RFC] Delayed logging of file sizes
Date: Mon, 26 Nov 2007 09:59:28 +1100 [thread overview]
Message-ID: <20071125225928.GE114266761@sgi.com> (raw)
In-Reply-To: <47467B87.2000000@sgi.com>
On Fri, Nov 23, 2007 at 06:04:39PM +1100, Lachlan McIlroy wrote:
> The easy solution is to log everything so that log replay doesn't need
> to check if the on-disk version is newer - it can just replay the log.
> But logging everything would cause too much log traffic so this patch
> is a compromise and it logs a transaction before we flush an inode to
> disk only if it has changes that have not yet been logged.
The problem with this is that the inode will be marked dirty during the
transaction, so we'll never be able to clean an inode if we issue a
transaction during inode writeback.
Cheers,
Dave.
--
Dave Chinner
Principal Engineer
SGI Australian Software Group
next prev parent reply other threads:[~2007-11-25 23:00 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-23 7:04 [PATCH, RFC] Delayed logging of file sizes Lachlan McIlroy
2007-11-25 22:59 ` David Chinner [this message]
2007-11-26 0:19 ` Lachlan McIlroy
2007-11-26 1:10 ` David Chinner
2007-11-26 1:29 ` Lachlan McIlroy
2007-11-26 2:15 ` David Chinner
2007-11-26 3:16 ` Lachlan McIlroy
2007-11-26 5:03 ` David Chinner
2007-11-27 3:30 ` Lachlan McIlroy
2007-11-27 10:53 ` David Chinner
2007-11-28 0:43 ` Lachlan McIlroy
2007-11-28 2:01 ` David Chinner
2007-11-28 4:18 ` Lachlan McIlroy
2007-11-28 9:07 ` David Chinner
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