Date: Mon, 09 Sep 2013 19:38:57 +0200 From: Adam Nowacki <nowakpl@platinum.linux.pl> To: freebsd-fs@freebsd.org Subject: Re: zfs_enable vs zfs_load in loader.conf (but neither works) Message-ID: <522E07B1.5030205@platinum.linux.pl> In-Reply-To: <CABXB=RQ_D2nwDYJf48dkM%2BQZbF565snvowe2cdG=0m6LKW831w@mail.gmail.com> References: <CABXB=RTz6jM=B895Bo6Kp-ZAf2pvTZkm-HfS=PrfX=aMKqjMbw@mail.gmail.com> <522D67DB.7060404@infracaninophile.co.uk> <CALfReyeAnpDAZEYPNP4-OZy3wCc9Yt1nurhfgA%2B=o7WFVZGHLA@mail.gmail.com> <CABXB=RQ_D2nwDYJf48dkM%2BQZbF565snvowe2cdG=0m6LKW831w@mail.gmail.com>
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On 2013-09-09 19:15, J David wrote: > On Mon, Sep 9, 2013 at 8:55 AM, krad <kraduk@gmail.com> wrote: >> you will find without 'zfs_enable="YES" ' set a lot of the zfs datasets >> might not get mounted > > Matthew has the same understanding of this that I do: zfs_load goes in > loader.conf and zfs_enable goes in rc.conf. > > zfs_load causes the loader to load zfs.ko and opensolaris.ko so that > the kernel can access the zpool (e.g. to mount the root filesystem) > after /boot/zfsloader finishes. > > zfs_enable in rc.conf activates the /etc/rc.d/zfs and /etc/rc.d/zvol > scripts. (And tweaks mountd on nfs servers.) > > There are several online ZFS-root recipies that say differently > (mainly that using zfs_load has been replaced by zfs_enable in > loader.conf), but I haven't found any authoritative references that > support that. Have you? (Also, it doesn't work in testing; the two > .ko's aren't loaded if zfs_load is not present.) > > In the absence of new info, that seems like the right way to do it. > > Things get sticky when it comes to establishing the ZFS root > filesystem. There are at least four ways to go about it: > > 1) Set vfs.root.mountfrom="zfs:data/root" in loader.conf. > 2) Run "zpool set bootfs=data/root data" on the pool. > 3) Run "zfs set mountpoint=/ data/root" on the root filesystem. > 4) Run "zfs set mountpoint=legacy data/root" on the root filesystem > and an /etc/fstab entry. > > Unfortunately, some of these are not sufficient by themselves, or they > don't work at all. So the question is, for 9.2, which (combination > of?) these is the authoritatively correct way to identify the ZFS root > filesystem? zfs set mountpoint=legacy data/root together with zpool set bootfs=data/root data setting vfs.root.mountfrom is not required - this is handled by the bootfs property, as is listing / in fstab
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