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To: Dan Cross <tenser@spitfire.ecsel.psu.edu>
cc: "K.Jayaram Kumar" <JKOTA.IN.ORACLE.COM.ofcmail@in.oracle.com>,
        fs@FreeBSD.ORG
Subject: Re: Async I/O 
In-reply-to: Your message of "Thu, 16 Jan 1997 11:30:54 EST."
             <19970116163054.27104.qmail@spitfire.ecsel.psu.edu> 
From: David Greenman <dg@root.com>
Reply-To: dg@root.com
Date: Thu, 16 Jan 1997 08:59:15 -0800
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>> I think FreeBSD doesn't support Async I/O.  Is that right ??  Also, is there 
>> any Async I/O simulation library available for FreeBSD ?? 
>
>FreeBSD does indeed support aynchronous I/O, but I'm curious, by what do
>you mean asynchronous I/O?  It supports both signal-driven asynchronous
>I/O (most commonly used to/from a socket...) as well as mounting filesystems
>asynchronously.  Since you sent mail to fs@freebsd.org, I assume you are
>refering to the latter.  In order to enable asynchronous I/O on a filesystem,
>specify the ``-o async'' option to your mount command line, or add the
>``async'' keyword to the options field in /etc/fstab.
>
>Hope this helps some.

   I think he means via the (Posix?) 'aio' interface. The answer to that is
no, we don't have support for that.

-DG

David Greenman
Core-team/Principal Architect, The FreeBSD Project