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%2Bsg5RR29vXowwyhOPOXmNU0ex9XW0fVui2fB1sgdsDPCKZUkg@mail.gmail.com> References: <CA%2Bsg5RQgF7%2BAQu9P0Bt8USF8722QCi=qJ2XQ8RbNQ92cv9tNTg@mail.gmail.com> <9C96EB4B-A230-4A26-BDC3-067367A61E34@shire.net> <CA%2Bsg5RR29vXowwyhOPOXmNU0ex9XW0fVui2fB1sgdsDPCKZUkg@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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