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Date:      Mon, 9 Aug 2010 22:14:23 +0000
From:      Marco van Tol <marco@tols.org>
To:        freebsd-fs@freebsd.org
Subject:   Re: Converting sysinstalled FreeBSD into ZFS-only server.
Message-ID:  <20100809221423.GF4964@tolstoy.tols.org>
In-Reply-To: <f901f2c14a4f2822360a0284fc468239@irbisnet.com>
References:  <f901f2c14a4f2822360a0284fc468239@irbisnet.com>

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On Mon, Aug 09, 2010 at 04:22:42PM -0400, Andriy Bakay wrote:
> 
> 1. In your post you are using dedicated partition for swap. Did it provide
> any advantages versus swap on ZFS volume?

For this one I think the answer is that it is very common to set dumpdev
in /etc/rc.conf to your swap device.  Dumping core to a software raid
is, uhm, suboptimal. :-)

> 2. You are suggesting to set 'vm_kmem_size' value to 150% of RAM. What
> pros. and cons. against following formula:
> 
> vm_kmem_size = RAM / 2
> vfs.zfs.arc_max = vm_kmem_size - 512M
> 
> 3. Could you be more verbose about your ZFS layout, what major advantages
> it provide against for example the following:
> http://wiki.freebsd.org/RootOnZFS/GPTZFSBoot. I found it very interesting
> but I need more info.

Me 2.

Marco van Tol

-- 
The hardest thing in the world to understand is the income tax
- Albert Einstein



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