Date: Thu, 10 Sep 2015 08:57:44 -0400 From: Paul Kraus <paul@kraus-haus.org> To: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: Storage question Message-ID: <4E5C9688-700F-460D-907C-0EE2DB65CE08@kraus-haus.org> In-Reply-To: <55F10715.3040508@sneakertech.com> References: <55EF3D23.5060009@hiwaay.net> <20150908220639.20412cbd@gumby.homeunix.com> <55EF5409.8020007@yahoo.com> <55EFC2DA.3020101@hiwaay.net> <5EB5C2C2-575B-40BD-BF6A-85F396C058FE@kraus-haus.org> <55F058FC.6080204@hiwaay.net> <B737A47C-FECD-4882-9B57-DDF1B29FCDDF@kraus-haus.org> <55F09924.2000007@hiwaay.net> <67BE98EB-AD0F-46C2-AF26-02C65D828DCF@kraus-haus.org> <55F105B2.2080806@sneakertech.com> <55F10715.3040508@sneakertech.com>
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On Sep 10, 2015, at 0:29, Quartz <quartz@sneakertech.com> wrote: >>> Note also the =93dnr=94 datasets :-) >>=20 >> Btw, you seem to be going with the 'dummy dataset' method for = preventing >> fs fillup. What's the advantage of doing it this way vs = refreservation >> or any other method? >=20 > More specifically, dummy datasets strike me as kind of the ugly way of = handling this issue. Isn't it better to just set parameters on your real = datasets? I do it this way for two reasons. 1) Habit=85 I have been doing this since before zfs even had the = refreservation and refquota properties :-) I have been managing zfs in = production since zpool version 10 (clearly on Solaris since it has not = been ported anywhere else that early on). 2) Transparency=85 it is much easier to spot a =93dnr=94 dataset set = than realize that a refreservation is set on the base zpool/dataset. Note that if you use refreservation, you only need it on the top level = dataset in the zpool. -- Paul Kraus paul@kraus-haus.org
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