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Date:      Sun, 12 Jul 2009 14:03:04 -0500
From:      Scot Hetzel <swhetzel@gmail.com>
To:        Norikatsu Shigemura <nork@freebsd.org>
Cc:        freebsd-current <freebsd-current@freebsd.org>
Subject:   Re: [SOLVED]Re: How to create ZFS on Root using MBR slices?
Message-ID:  <790a9fff0907121203w7e814493n97eaa8664531f37@mail.gmail.com>
In-Reply-To: <20090712175929.f38d4c26.nork@FreeBSD.org>
References:  <790a9fff0907101159w495b644dge4a4bd81de0bda9b@mail.gmail.com> <20090710211809.GA84773@crodrigues.org> <790a9fff0907101911y7143ed4bnbb050d78ebc21558@mail.gmail.com> <790a9fff0907110606t61da8ebbufa5575d12d949ca@mail.gmail.com> <790a9fff0907110747t7187fba6h7fdb82a40f57d489@mail.gmail.com> <20090712175929.f38d4c26.nork@FreeBSD.org>

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On Sun, Jul 12, 2009 at 3:59 AM, Norikatsu Shigemura<nork@freebsd.org> wrot=
e:
> Hi Scot.
>
> On Sat, 11 Jul 2009 09:47:21 -0500
> Scot Hetzel <swhetzel@gmail.com> wrote:
>> I created a page on the FreeBSD wiki with these instructions.
>> http://wiki.freebsd.org/ZFSOnRootWithZFSboot
>
> =A0 =A0 =A0 =A0I have two requests.
>
> =A0 =A0 =A0 =A01. Use fstab instead of vfs.root.mountfrom.
> =A0 =A0 =A0 =A0 =A0 loader with LOADER_ZFS_SUPPORT can read /etc/fstab,
> =A0 =A0 =A0 =A0 =A0 so we should use fstab like UFS.
>
> - - - - - - - - - -
> # Device =A0 =A0 =A0 =A0Mountpoint =A0 =A0 =A0FStype =A0Options Dump =A0 =
=A0Pass#
> zroot =A0 =A0 =A0 =A0 =A0 / =A0 =A0 =A0 =A0 =A0 =A0 =A0 zfs =A0 =A0 =A0 =
=A0 =A0 =A0 rw,noatime =A0 =A0 =A00 =A0 =A0 =A0 0
> - - - - - - - - - -
>
I added a Alternate configuration section, and added an example /etc/fstab

> =A0 =A0 =A0 =A02. all compression=3Don is not usable.
> =A0 =A0 =A0 =A0 =A0 I had used all zfs with compression=3Don. =A0In thus =
environment,
> =A0 =A0 =A0 =A0 =A0 toooo latency, I got frustration. =A0We should use co=
mpression=3Don
> =A0 =A0 =A0 =A0 =A0 on some fs.
>
I added a warning about latency caused by enabling compression to step 7.

Scot



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