| To: | Austin Gonyou <austin@xxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: Curious about mount options and Direct IO. |
| From: | Eric Sandeen <sandeen@xxxxxxx> |
| Date: | 24 Oct 2002 16:44:03 -0500 |
| Cc: | Chris Wedgwood <cw@xxxxxxxx>, linux-xfs@xxxxxxxxxxx |
| In-reply-to: | <1035490218.1472.11.camel@ubergeek> |
| References: | <20021024200521.GA17994@tapu.f00f.org> <1035490218.1472.11.camel@ubergeek> |
| Sender: | linux-xfs-bounce@xxxxxxxxxxx |
O_DIRECT is not a mount option, you open a file with that flag, and do I/O in a prescribed fashion. You can't "magically" get O_DIRECT behavior across a filesystem with just a mount option. An old paper on what O_DIRECT is, is at http://www.ukuug.org/events/linux2001/papers/html/AArcangeli-o_direct.html -Eric On Thu, 2002-10-24 at 15:10, Austin Gonyou wrote: > > I agree, but I guess my question was a general question about XFS's > capabilities to actually do anything in a DIO mode.I didn't see any > mount options for DirectIO, just osyncisdsync. -- Eric Sandeen XFS for Linux http://oss.sgi.com/projects/xfs sandeen@xxxxxxx SGI, Inc. 651-683-3102 |
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