Ben Woods wrote on 2019/01/05 13:39:
On Fri, 28 Dec 2018 at 12:43, Colin Percival<[email protected]> wrote:
I've created an experimental FreeBSD 12.0 ZFS AMI in the us-east-1 region:
ami-0786f5b55d5aa573f
Since I'm basically a ZFS newbie (I run it on my laptop, but only with the
default setup from the installer, and I've never used any of the fancy ZFS
features) I don't know if I've set everything up properly. So far I have
one piece of feedback, which is that I should have marked canmount=off for
zroot.
Hi Colin,
Thanks a lot for doing this - much appreciated.
I have just given it a try, and have the following feedback for you:
1. ZFS DATASETS AND PROPERTIES SHOULD MATCH INSTALLER DEFAULT
To avoid any confusion or unexpected behaviour, I believe the list of ZFS
datasets and their properties should exactly match the bsdinstall defaults
(especially for releases).
zpool create:
https://svnweb.freebsd.org/base/head/usr.sbin/bsdinstall/scripts/zfsboot?revision=342283&view=markup#l1308
zfs datasets and properties:
https://svnweb.freebsd.org/base/head/usr.sbin/bsdinstall/scripts/zfsboot?revision=342283&view=markup#l141
Looking at how you created the zpool and zfs datasets (using the "zpool
history zroot" command), the following changes would achieve this outcome:
--- zfs-commands.old
+++ zfs-commands.new
@@ -1,19 +1,15 @@
-zpool create -o altroot=/mnt zroot ada0p2
-zfs set compress=on zroot
+zpool create -o altroot=/mnt -O compress=lz4 -O atime=off -m none -f zroot
ada0p2
zfs create -o mountpoint=none zroot/ROOT
zfs create -o mountpoint=/ -o canmount=noauto zroot/ROOT/default
zfs create -o mountpoint=/tmp -o exec=on -o setuid=off zroot/tmp
-zfs create -o canmount=off -o mountpoint=/usr zroot/usr
+zfs create -o mountpoint=/usr -o canmount=off zroot/usr
zfs create zroot/usr/home
-zfs create -o exec=off -o setuid=off zroot/usr/src
-zfs create zroot/usr/obj
-zfs create -o mountpoint=/usr/ports -o setuid=off zroot/usr/ports
-zfs create -o exec=off -o setuid=off zroot/usr/ports/distfiles
-zfs create -o exec=off -o setuid=off zroot/usr/ports/packages
-zfs create -o canmount=off -o mountpoint=/var zroot/var
+zfs create -o setuid=off zroot/usr/ports
+zfs create zroot/usr/src
+zfs create -o mountpoint=/var -o canmount=off zroot/var
zfs create -o exec=off -o setuid=off zroot/var/audit
zfs create -o exec=off -o setuid=off zroot/var/crash
zfs create -o exec=off -o setuid=off zroot/var/log
-zfs create -o atime=on -o exec=off -o setuid=off zroot/var/mail
-zfs create -o exec=on -o setuid=off zroot/var/tmp
+zfs create -o atime=on zroot/var/mail
+zfs create -o setuid=off zroot/var/tmp
zpool set bootfs=zroot/ROOT/default zroot
I think the opposite - bsdinstall shoul be fixed to use exec=off and
setuid=off.
Just my $0.02
Miroslav Lachman
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