FreeBSD 10 installer and ZFS root

[dteske at FreeBSD.org]

> -----Original Message-----
> From: Trond Endrestøl [mailto:Trond.Endrestol at fagskolen.gjovik.no]
> Sent: Tuesday, March 11, 2014 12:28 AM
> To: David Christensen
> Cc: freebsd-questions at freebsd.org
> Subject: Re: FreeBSD 10 installer and ZFS root
> 
> On Mon, 10 Mar 2014 11:20-0700, David Christensen wrote:
> 
> > On 03/10/2014 12:18 AM, Matthew Seaman wrote:
> > > On 10/03/2014 05:47, David Christensen wrote:
> > > >      Question -- can I set encryption options for ada0s1d.eli
> > > > during installation?
> > > Not sure.  Unless you know exactly what you're doing with crypto
> > > stuff, I'd advise taking the defaults the installer gives you, or
> > > you could accidentally end up with something less secure than you
> intended.
> >
> > It sounds like I'm making feature requests for the FreeBSD installer.
> 
> +1.
> 
> Re the above: It would be nice if the installer could be told to pause
between
> creating the pools and creating the filesystem layout, and between
creating the
> filesystem layout and extracting the system. Make that two separate
toggles to
> maximize flexibility. That way we could switch to another vty and set the
> zpool/zfs properties ourselves before proceeding.
> 

I guess that's an approach. I'm still left wondering why you wouldn't just
create
the file /etc/installerconfig and set the ZFSBOOT_DATASETS variable.

Setting this variable in /etc/installerconfig on the installation media will
override
the default value of:

116 ZFSBOOT_DATASETS=" 
117 	# DATASET	OPTIONS (comma or space separated; or both) 
118  
119 	# Boot Environment [BE] root and default boot dataset 
120 	/$ZFSBOOT_BEROOT_NAME				mountpoint=none 
121 	/$ZFSBOOT_BEROOT_NAME/$ZFSBOOT_BOOTFS_NAME	mountpoint=/ 
122  
123 	# Compress /tmp, allow exec but not setuid 
124 	/tmp		mountpoint=/tmp,compression=lz4,exec=on,setuid=off 
125  
126 	# Don't mount /usr so that 'base' files go to the BEROOT 
127 	/usr		mountpoint=/usr,canmount=off 
128  
129 	# Home directories separated so they are common to all BEs 
130 	/usr/home	# NB: /home is a symlink to /usr/home 
131  
132 	# Ports tree 
133 	/usr/ports		compression=lz4,setuid=off 
134  
135 	# Source tree (compressed) 
136 	/usr/src	compression=lz4,exec=off,setuid=off 
137  
138 	# Create /var and friends 
139 	/var		mountpoint=/var 
140 	/var/crash	compression=lz4,exec=off,setuid=off 
141 	/var/log	compression=lz4,exec=off,setuid=off 
142 	/var/mail	compression=lz4,atime=on 
143 	/var/tmp	compression=lz4,exec=on,setuid=off 
144 " # END-QUOTE

The variable is a multi-line string that describes the datasets and their
properties.

NOTE WELL: When overriding the variable with different contents,
the variables ZFSBOOT_BEROOT_NAME and ZFSBOOT_BOOTFS_NAME
have not yet been defined, so those should be translated to their literal
string values, shown below...

ZFSBOOT_BEROOT_NAME=ROOT
ZFSBOOT_BOOTFS_NAME=default
-- 
Devin

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