Date: Wed, 20 May 2015 23:09:59 +0200 From: Dimitry Andric <dim@FreeBSD.org> To: Allan Jude <allanjude@freebsd.org> Cc: freebsd-hackers@freebsd.org Subject: Re: FreeBSD Boot Environments Message-ID: <58BDAE4B-1929-427C-8E86-037E71AB0712@FreeBSD.org> In-Reply-To: <555CD1DB.6010807@freebsd.org> References: <20150520181006.GB21070@zxy.spb.ru> <555CD1DB.6010807@freebsd.org>
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--Apple-Mail=_983AFBF5-1859-4E62-9403-02609A2FB026 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=windows-1252 On 20 May 2015, at 20:26, Allan Jude <allanjude@freebsd.org> wrote: > > On 2015-05-20 14:10, Slawa Olhovchenkov wrote: ... > > The typical way (done by bsdinstall) is that your zroot/usr dataset, is > set 'canmount=off', and only exists for you to create child datasets. > > Any files written to /usr/bin etc, actually end up going to the > ROOT/default dataset > > you can tell by looking at 'zfs list' and your zroot/usr is only like > 200kb, instead of 100s of megabytes. It also won't be listed in the > output of 'mount'. Just a minor note, the field to check is "refer", for example on one of my systems: $ zfs list zroot/usr NAME USED AVAIL REFER MOUNTPOINT zroot/usr 8.34G 404G 96K /usr E.g. all file systems *under* /usr together use 8.34G, but /usr itself only refers to 96K. -Dimitry --Apple-Mail=_983AFBF5-1859-4E62-9403-02609A2FB026 Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename=signature.asc Content-Type: application/pgp-signature; name=signature.asc Content-Description: Message signed with OpenPGP using GPGMail -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.27 iEYEARECAAYFAlVc+DMACgkQsF6jCi4glqM/cwCdH0PV5/hD13yZvNl8wPd7LsYG zDcAnj5y0eB5NTqNvFeiOmpDSssqbPND =xT/7 -----END PGP SIGNATURE----- --Apple-Mail=_983AFBF5-1859-4E62-9403-02609A2FB026--
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