Date: Wed, 5 Aug 2020 16:47:46 +0000 From: John Long <codeblue@inbox.lv> To: freebsd-fs <freebsd-fs@freebsd.org> Subject: Re: zfs scrub enable by default Message-ID: <249ab487-e8c6-6e8f-f966-976407d4d3d3@inbox.lv> In-Reply-To: <CAOtMX2g_CsftzAvDmCv%2B_7BH5UMu1u4NR3pObUR4kK6CtUo0nw@mail.gmail.com> References: <cca34d1a-1892-41ec-ce45-84865100c6e1@FreeBSD.org> <CAJjvXiEXEdAFXpXkGvt4fymA17kNdp6XkZV5taGKLoP2GvMHbw@mail.gmail.com> <d1b580da-1539-5fc9-f7a3-3f013bba4ef3@FreeBSD.org> <CANCZdfq2PneFvB4rnz2iGu5srFFFjs8N=7FwRO3DYjosESWXtQ@mail.gmail.com> <CAGuotKD0mCS3KmMA-EGL1uH_fByYOhMKbPVDoTdB8dg5kC-u9g@mail.gmail.com> <105090343.294898.1596586694925.JavaMail.zimbra@gray.id.au> <alpine.GSO.2.20.2008042010300.10299@scrappy.simplesystems.org> <e5e7a916-4da2-6467-1616-1b1a75f32509@denninger.net> <alpine.GSO.2.20.2008050808330.10299@scrappy.simplesystems.org> <1327e123-35df-1e27-af7a-7225dae91a21@inbox.lv> <CAOtMX2i7QffwdOxPLSk6H5a-xstYyr4qzLP4-djzEEtHVqYBJQ@mail.gmail.com> <71d447e6-3f18-319a-ec98-9e35feec3180@inbox.lv> <CAOtMX2g_CsftzAvDmCv%2B_7BH5UMu1u4NR3pObUR4kK6CtUo0nw@mail.gmail.com>
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On 05/08/2020 16:13, Alan Somers wrote: > On Wed, Aug 5, 2020 at 10:06 AM John Long via freebsd-fs > <freebsd-fs@freebsd.org <mailto:freebsd-fs@freebsd.org>> wrote: > > On 05/08/2020 15:24, Alan Somers wrote: > > On Wed, Aug 5, 2020 at 9:22 AM John Long via freebsd-fs > > <freebsd-fs@freebsd.org <mailto:freebsd-fs@freebsd.org> > <mailto:freebsd-fs@freebsd.org <mailto:freebsd-fs@freebsd.org>>> wrote: snipped > Yeah. I wouldn't recommend ever chaning the copies value from the > default. If dedup is on (also not recommended), then it wouldn't make > sense to use multiple copies anyway. Yeah that felt like a shoot self in ass opportunity but I never thought about it until this thread. > And if zfs encryption is on, then > you can't use multiple copies, because encryption repurposes some of the > block pointer's fields. > -Alan Last I looked ZFS on FreeBSD does not support encryption. But it is helpful to know that there is a technical issue in doing both. Thank you for the info! /jl
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