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From: David Woodhouse <dwmw2@infradead.org>
To: Sergei Sharonov <sergei.sharonov@halliburton.com>
Cc: linux-mtd@lists.infradead.org
Subject: Re: atomic file operations
Date: Thu, 24 Mar 2005 21:59:53 +0000	[thread overview]
Message-ID: <1111701594.6588.2.camel@localhost.localdomain> (raw)
In-Reply-To: <loom.20050323T212715-407@post.gmane.org>

On Wed, 2005-03-23 at 20:50 +0000, Sergei Sharonov wrote:
> I believe I saw a proposal to save small chunks as separate files,
> then append them as a temp file and rename temp file to real log
> file. 
> The problems are (1) the log file is huge (2) rename is not atomic per
> your reply.

The important part of rename is atomic. If you have 'log_file', and then
you create 'log_file.new' and rename that to 'log_file', then there is
never an instant where 'log_file' does not exist; it goes directly from
pointing to one inode, to pointing to the other.

-- 
dwmw2

  parent reply	other threads:[~2005-03-24 21:59 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-03-22 21:57 atomic file operations Sergei Sharonov
2005-03-23  9:39 ` Estelle HAMMACHE
2005-03-23 20:50   ` Sergei Sharonov
2005-03-24 10:11     ` Estelle HAMMACHE
2005-03-24 10:53       ` Artem B. Bityuckiy
2005-03-24 11:59         ` Estelle HAMMACHE
2005-03-24 12:17           ` Artem B. Bityuckiy
2005-03-24 17:28         ` Sergei Sharonov
2005-03-24 19:32           ` Artem B. Bityuckiy
2005-03-24 22:00         ` David Woodhouse
2005-03-25  8:18           ` Artem B. Bityuckiy
2005-03-24 21:59     ` David Woodhouse [this message]
2005-03-25 16:18 ` Sergei Sharonov

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