File System ???

[ZIYAD A. M. AL-BATLY]

On Tue, 2005-07-12 at 22:35 -0400, Larry Grover wrote:
> Are you exporting with the "async" option?  According to the exports
> man page:
> 
> Using this option usually improves performance, but at the cost
> that an unclean server restart (i.e. a crash) can cause data to
> be lost or corrupted.
> 
> Could this be causing your problem?
> 
> Regards,
> Larry
> 
> 
This is no longer true with journal file-systems (like in this case:
EXT3)!  One of the most important features of a journal file-system is
to prevent such corruption in all cases (at the expense of some
performance lose).

Also, "async" is *on* by *default* unless you turn it off (by passing
the "sync" option after all other options related to the subject)!

Here's a quote from "man mount":
        async
                All I/O to the file system should be done asynchronously.
        
        <snip>
        
        defaults
                 Use default options: rw, suid, dev, exec, auto, nouser, and async.
        
        <snip>
        
        sync
                All I/O to the file system should be done synchronously.


(Sorry for bing nit-picky.  I just want to clear things up!)
Ziyad.