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Subject: Re: mkfs and mount tips?
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From: Andi Kleen <andi@firstfloor.org>
Date: 13 Feb 2007 12:57:36 +0100
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To: Leon Kolchinsky <leonk@construct.haifa.ac.il>
Cc: 'Justin Piszcz' <jpiszcz@lucidpixels.com>, linux-xfs@oss.sgi.com

"Leon Kolchinsky" <leonk@construct.haifa.ac.il> writes:
> 
> What about "osyncisdsync" mount option, can someone recommend this based on
> its own experience?

Not sync metadata on O_SYNC writes.

That's also dangerous -- might cause data corruption after crash. It is mostly
a hack if you know your programs very well, but can't change them
to use O_DSYNC when they only need that.

Also his other options basically all just use more memory. If you
have a P90 you're likely low on memory for modern standards and 
shouldn't use them.

-Andi