From mboxrd@z Thu Jan  1 00:00:00 1970
From: erik quanstrom <quanstro@coraid.com>
Date: Fri,  9 Jan 2009 17:27:34 -0500
To: 9fans@9fans.net
Message-ID: <03e636be1abb554405edfb40633dca51@coraid.com>
In-Reply-To: <10594.1231539507@lunacy.ugrad.cs.cmu.edu>
References: <10594.1231539507@lunacy.ugrad.cs.cmu.edu>
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Subject: Re: [9fans] venti
Topicbox-Message-UUID: 7f3dfe26-ead4-11e9-9d60-3106f5b1d025

> I seem to recall being surprised at some point to observe
> /dev/sdXX/data silently imposing a one-open-at-a-time policy
> (I think subsequent opens stalled).  Maybe a script run at
> system boot time could turn on DMEXCL for appropriate things
> in /dev/sd*/*?

i think you mean the raw file.

	; cat fu.c
	#include <u.h>
	#include <libc.h>

	void
	main(void)
	{
		int i, fd[2];

		for(i = 0; i < nelem(fd); i++){
			fd[i] = open("/dev/sdC0/data", OREAD);
			print("fd = %d\n", fd[i]);
		}
		exits("");
	}
	; 8c fu.c && 8l fu.8 && 8.out
	3
	4

- erik