Date: Sat, 25 Jan 2020 12:09:31 +0800 From: Ben Woods <woodsb02@gmail.com> To: Warner Losh <imp@bsdimp.com> Cc: Ed Maste <emaste@freebsd.org>, Conrad Meyer <cem@freebsd.org>, "freebsd-arch@freebsd.org" <freebsd-arch@freebsd.org>, Mike Karels <mike@karels.net>, Philip Paeps <philip@freebsd.org> Subject: Re: svn commit: r356758 - in head/usr.sbin/bsdinstall: . scripts Message-ID: <CAOc73CA3uUO0meVGJieUxx26VXFNk_=n8E%2BgTxoC=9ED=jSaJw@mail.gmail.com> In-Reply-To: <CANCZdfocafvL3TbdESbV%2BsFWRFJK4ouwN9C=CO_ZZr5_Dp2-LA@mail.gmail.com> References: <CAOc73CB75Szqt95fNcks3x%2BRBEZYGA4eUCBHWa39GMha6enOuA@mail.gmail.com> <202001180116.00I1G705020955@mail.karels.net> <CAOc73CDhPsUkt6aJLSua=9OG5gh_z52qRV0GGMtNaX2=n_5WmQ@mail.gmail.com> <CAPyFy2CpxScKBgLi0tE8x_m4Ew87BZX7s5esc=E7_95UA5AqPQ@mail.gmail.com> <CANCZdfocafvL3TbdESbV%2BsFWRFJK4ouwN9C=CO_ZZr5_Dp2-LA@mail.gmail.com>
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On Sat, 25 Jan 2020 at 00:33, Warner Losh <imp@bsdimp.com> wrote: > I'm happy for whatever comments we have here in the range. Maybe "ZFS > requires at least 8GB of ram to be viable by default. Careful tuning can > dramatically lower the amount of RAM needed." or something similar. > > Warner > Thanks Warner - I have used inspiration from your recommended text and others to propose the following bsdinstall help text: msg_partitioning_zfs_help="To use ZFS with less than 8GB RAM, see https://wiki.freebsd.org/ZFSTuningGuide" msg_partitioning_ufs_help="Menu options help choose which disk to setup using UFS and standard partitions" Note that both of those lines are at their maximum length (we have 78 characters to work with in order to support a standard 80 column terminal). I think that this avoids recommending a hard limit for when ZFS can and can't be used, but also points out cases where tuning might be required in low RAM instances, and where to go for more information. Noting that the very first line of the ZFSTuningGuide wiki article is currently: "To use ZFS, at least 1 GB of memory is recommended (for all architectures) but more is helpful as ZFS needs *lots* of memory." I have uploaded the phabricator review here: https://reviews.freebsd.org/D23224 Regards, Ben
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