Date: Tue, 19 Feb 2013 02:34:01 +0000 From: "Teske, Devin" <Devin.Teske@fisglobal.com> To: Fbsd8 <fbsd8@a1poweruser.com>, Polytropon <freebsd@edvax.de> Cc: FreeBSD questions <questions@freebsd.org>, "Teske, Devin" <Devin.Teske@fisglobal.com> Subject: RE: How to add zfs support to FreeBSD? Message-ID: <13CA24D6AB415D428143D44749F57D7201EAACAE@ltcfiswmsgmb21> In-Reply-To: <5122D83F.6090107@a1poweruser.com> References: <51229B47.4070605@a1poweruser.com> <5122A3BA.2000907@a1poweruser.com> <20130219015600.68050fb2.freebsd@edvax.de>, <5122D83F.6090107@a1poweruser.com>
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The tool for checking rc.conf(5) is my sysrc(8).
It will eventually be part of base (it's already checked into HEAD at usr.s=
bin/sysrc -- but not installed by default unless WITH_BSDCONFIG is enabled =
when performing a build(7) or release(7) process).
Currently, also available via ports in sysutils/sysrc
I definitely recommend giving it a shot.
There's essentially two ways to use it for your needs:
1. sysrc -n zfs_enable
Returns YES for example.
or...
2. For better performance, use the includes...
#!/bin/sh
. /usr/local/share/sysrc/sysrc.subr
f_sysrc_get zfs_enable
Returns YES for example.
--=20
Devin
________________________________________
From: owner-freebsd-questions@freebsd.org [owner-freebsd-questions@freebsd.=
org] on behalf of Fbsd8 [fbsd8@a1poweruser.com]
Sent: Monday, February 18, 2013 5:41 PM
To: Polytropon
Cc: FreeBSD questions
Subject: Re: How to add zfs support to FreeBSD?
Polytropon wrote:
> On Mon, 18 Feb 2013 16:57:14 -0500, Fbsd8 wrote:
>> Fbsd8 wrote:
>>> The handbook does not cover how to add zfs support.
>>>
>>> How is it done?
>>
>> Let me reword. If zfs is in the base system why does it not show up
>> when I look for it this way?
>>
>> if config -x $( sysctl -n kern.bootfile ) | grep -q
>> '^[[:space:]]*options[[:space:]]\{1,\}ZFS\>'; then
>> echo "yes zfs is in the kernel"
>> fi
>
> Without the ability to check this, I strongly assume that
> if you enable ZFS as described in the Handbook, the module
> /boot/kernel/zfs.ko (part of the default system) will be
> loaded. That's why it won't show up in a sysctl query
> aimed at the _kernel_ itself -- because it isn't in the
> kernel.
>
> Also, "sysctl -n kern.bootfile" will return the actual
> kernel file, /boot/kernel/kernel, which is a binary. If
> the exact config list (from the kernel _configuration_
> file) is not plain-text part of that file, grep will not
> find the text you're grepping for.
>
So the next question is there any sh script code I can use to
check if zfs has been enabled by the rc.conf zfs_enable statement.
I need to determine if zfs is enabled on the host.
Thanks
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