Message-ID: <3B94F726.E978C299@sgi.com>
Date: Tue, 04 Sep 2001 10:45:42 -0500
From: Eric Sandeen <sandeen@sgi.com>
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To: "Gonyou, Austin" <austin@coremetrics.com>
CC: "'Seth Mos'" <knuffie@xs4all.nl>, XFS mailing list <linux-xfs@oss.sgi.com>
Subject: Re: System lock while accessing files causes file corruption
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"Gonyou, Austin" wrote:
> 
> That's all well and good..but what about the configuration files? They are
> text and are not redundant in the same way. 

In my spare time (!) I'm working on characterizing how long it takes a
write to get out to disk on average, it seem to be on the order of 30
seconds, with normal mount options (this should be ~ the same as with
ext2, for example).  This is what I would expect based on bdflush, etc,
but some people's experience suggests that it's taking longer, this is
really something I want to feel sure of.

But in any case, it occurred to me that you could make /etc on it's own
partition, and mount that O_SYNC - I don't think that would be too much
overhead, /etc doesn't get written that much on a normal system (?).  If
Oracle puts config files elsewhere, you could simlink them onto this
filesystem.

-Eric

-- 
Eric Sandeen      XFS for Linux     http://oss.sgi.com/projects/xfs
sandeen@sgi.com   SGI, Inc.