Date: Mon, 23 Feb 2015 09:28:36 -0600 From: John Goerzen <jgoerzen@complete.org> To: krad <kraduk@gmail.com>, =?UTF-8?B?VHJvbmQgRW5kcmVzdMO4bA==?= <Trond.Endrestol@fagskolen.gjovik.no> Cc: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: 10.1 ZFS - why canmount=off for /usr and /var by default? Message-ID: <54EB4724.7050302@complete.org> In-Reply-To: <CALfReycjsYcfcTZ=VsHDUQiM8u-iDh3gh8JLKh3YcZfqpMeyDQ@mail.gmail.com> References: <54E01849.3020500@complete.org> <CAOc73CANPtOeTdyCbuyyVVJDbMMDqpYwTcXPk%2BqKy5vzL_br9Q@mail.gmail.com> <loom.20150215T144933-673@post.gmane.org> <CALfReyc20zYra-H5iEXErwPOQz9RpC6reZgZLsKbUOGNpEoONA@mail.gmail.com> <alpine.BSF.2.11.1502191641310.9535@mail.fig.ol.no> <CALfReycjsYcfcTZ=VsHDUQiM8u-iDh3gh8JLKh3YcZfqpMeyDQ@mail.gmail.com>
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Yep. Even if the dataset exists, all the benefits of it could still be obtained without setting mointpoint=. I find mountpoint= to be misleading for a dataset where canmount is off. John On 02/23/2015 08:36 AM, krad wrote: > It makes a degree of sense, however what are the properties most > people set to inherit? Compression, atime, for me and I do that at the > root dataset anyway, and sometimes dedup if its an ssd based pool. > > I still dont see why we set the mountpoint as this just confuses imho > > On 19 February 2015 at 15:49, Trond Endrestøl > <Trond.Endrestol@fagskolen.gjovik.no > <mailto:Trond.Endrestol@fagskolen.gjovik.no>> wrote: > > On Thu, 19 Feb 2015 12:06-0000, krad wrote: > > > It is a bit confusing, I have to ask why call it zroot/usr at > all? I use > > <pool>/os/ for stuff like ports etc and then set the mountpoint. > If we must > > use usr in the name why not set the mountpoint to legacy as > well, as its > > more clearly not used? > > Sorry for jumping in, but it's done simply to inherit the mountpoint. > > It has already been said, but here's a recap. > > Most of what you'll find in /usr belongs to the current BE. Datasets > create below zroot/usr, e.g. zroot/usr/local, magically appears as > /usr/foo, e.g. /usr/local. The same goes for zroot/var and /var. > > If you want to install FreeBSD with ZFS using some other train of > thought, then feel free to do so. > > I have my own set of scripts at > http://ximalas.info/~trond/create-zfs/canmount/ > <http://ximalas.info/%7Etrond/create-zfs/canmount/>, and they > certainly > have their flaws, and maybe I even change these scripts in the future > as I move along and change my perspective on FreeBSD and ZFS. > > > On 15 February 2015 at 13:52, John Goerzen > <jgoerzen@complete.org <mailto:jgoerzen@complete.org>> wrote: > > > > > Ben Woods <woodsb02 <at> gmail.com <http://gmail.com>>; writes: > > > > > > > > > > > To quote Allan Jude when I posed this question to him: > > > > > > > > "The /usr dataset has 'canmount' set to off. It only exists > so that other > > > > datasets can be created under it. > > > > > > That makes sense. But it is misleading to have the mountpoint > set to /usr > > > and /var, isn't it? In a zfs list, it looks as if it's being > used for /usr > > > and /var, when really as you say it's a container. > > > > > > I wonder - would there be a place I could submit a bug report > to suggest > > > that the mountpoint property be inherited at the default > rather than set > > > for > > > these two filesystems? > > > > > > > To use boot environments, you need to install the tool from > the ports > > > tree: > > > > sysutils/beadm-devel > > > > > > Interesting. That looks quite nice. I need to read up a bit > more on it, > > > clearly, since it seems to be more than just a zfs clone and > zpool set > > > bootfs that I was expecting. > > > > > > Thanks, > > > > > > John > > -- > +-------------------------------+------------------------------------+ > | Vennlig hilsen, | Best regards, | > | Trond Endrestøl, | Trond Endrestøl, | > | IT-ansvarlig, | System administrator, | > | Fagskolen Innlandet, | Gjøvik Technical College, Norway, | > | tlf. mob. 952 62 567, | Cellular...: +47 952 62 567 > <tel:%2B47%20952%2062%20567>, | > | sentralbord 61 14 54 00. | Switchboard: +47 61 14 54 00 > <tel:%2B47%2061%2014%2054%2000>. | > +-------------------------------+------------------------------------+ > >
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