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From: Sergei Sharonov <sergei.sharonov@halliburton.com>
To: linux-mtd@lists.infradead.org
Subject: atomic file operations
Date: Tue, 22 Mar 2005 21:57:30 +0000 (UTC)	[thread overview]
Message-ID: <loom.20050322T224733-491@post.gmane.org> (raw)

Hello,

I am working on a logging application where a (large) log file is appended 
with 1 kByte data chunks. I cannot miss a chunk or duplicate a chunk in 
case of a power failure. Kermit will be used to ensure atomicity for 
incomming data chunks. Now, the question is what file operations on JFFS2 
are guaranteed to be atomic/transactional? 
Is a write of 1024 bytes atomic? 
Does it relate to the page size in any way? BTW I am using NAND and the page 
may vary between 512 and 2048 bytes depending on a device.
Is file rename atomic?
Other file operations?

Second issue is: How badly these small chunks will affect my mount time?

Thanks in advance

Sergei Sharonov

             reply	other threads:[~2005-03-22 22:11 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-03-22 21:57 Sergei Sharonov [this message]
2005-03-23  9:39 ` atomic file operations 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
2005-03-25 16:18 ` Sergei Sharonov

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