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Date:      Wed, 27 May 2015 14:36:58 -0600
From:      "Chad Leigh Shire.Net LLC" <chad@shire.net>
To:        "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org>
Subject:   Re: ZFS in a VM?
Message-ID:  <CD14530C-58EB-4DA4-8DA0-59B3A1711A05@shire.net>
In-Reply-To: <CA+sg5RR29vXowwyhOPOXmNU0ex9XW0fVui2fB1sgdsDPCKZUkg@mail.gmail.com>
References:  <CA+sg5RQgF7+AQu9P0Bt8USF8722QCi=qJ2XQ8RbNQ92cv9tNTg@mail.gmail.com> <9C96EB4B-A230-4A26-BDC3-067367A61E34@shire.net> <CA+sg5RR29vXowwyhOPOXmNU0ex9XW0fVui2fB1sgdsDPCKZUkg@mail.gmail.com>

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> On May 27, 2015, at 1:41 PM, Jaime Kikpole <jkikpole@cairodurham.org> =
wrote:
>=20
> On Wed, May 27, 2015 at 3:39 PM, Chad Leigh Shire.Net LLC
> <chad@shire.net> wrote:
>> I do.  I do it not so much for any performance benefits, if any, ZFS =
offers, but more for data integrity.
>=20
> Exactly what I was looking for, too.
>=20
>=20
>> You need to tune it since the VM based disks are not the same as =
physical disks.
>=20
> I'm afraid that I don't understand.  Can you explain what you mean by =
"tune it?"

There are various kernel =E2=80=9Ctunables=E2=80=9D (aka =E2=80=9Ckernel =
state=E2=80=9D, settable =E2=80=9Cvariables=E2=80=9D in the kernel, see =
=E2=80=9Cman sysctl=E2=80=9D) that affect ZFS. =20





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