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Date:      Wed, 23 Dec 2015 17:44:40 -0800
From:      Yuri <yuri@rawbw.com>
To:        Daniel Braniss <danny@cs.huji.ac.il>, Rick Macklem <rmacklem@uoguelph.ca>
Cc:        Freebsd hackers list <freebsd-hackers@freebsd.org>
Subject:   Re: Should DEBUG_VFS_LOCKS messages be reported as bugs?
Message-ID:  <567B4E08.1000204@rawbw.com>
In-Reply-To: <CE48BB9B-2FB0-4427-AC5E-4F0EDAAC8CC4@cs.huji.ac.il>
References:  <567791E9.50207@rawbw.com> <56779542.8020205@rawbw.com> <1331010544.139156804.1450706805234.JavaMail.zimbra@uoguelph.ca> <CE48BB9B-2FB0-4427-AC5E-4F0EDAAC8CC4@cs.huji.ac.il>

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On 12/22/2015 01:34, Daniel Braniss wrote:
> I have been using unionfs for a very long time, mounting /etc (nfs read only) and md
> whiteout any problems. I’m not sure if i tested it on 11, but i will soon.
> yes, it can be problematic for other crazy things, but in my case, where many of
> my hosts are dataless so the unionfs is a great simplifier:-)
>
> just my 2 cents.
>

I tried to replace nullfs+unionfs with unionfs+unionfs, and got the same 
messages using the kernel with the same debug options.
So it is dangerous.

Yuri




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