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Date:      Tue, 31 Jan 2017 15:00:01 +0100
From:      Andreas Nilsson <andrnils@gmail.com>
To:        krad <kraduk@gmail.com>
Cc:        Aristedes Maniatis <ari@ish.com.au>, FreeBSD Stable <freebsd-stable@freebsd.org>
Subject:   Re: Boot partition size
Message-ID:  <CAPS9%2BSvGaHzf%2BwEJqsByOUtejAwkjppk%2BkEUEW_5cgtjnszsOA@mail.gmail.com>
In-Reply-To: <CALfReyfwuuN_HQ_8iszwdpLJPCy-LagoeoEEBoXJnZW6sgus6Q@mail.gmail.com>
References:  <a4cab85a-5e79-c7c1-fbb7-d9cf83cbf556@ish.com.au> <20170129141244.GA63867@in-addr.com> <CAOjFWZ6WRQ5i4OP5ZK89RxM1YpMbVp%2BcOHCSvUyUx0etizUmog@mail.gmail.com> <851efa44-0607-231f-0905-8f9c96a36237@ish.com.au> <CALfReyfwuuN_HQ_8iszwdpLJPCy-LagoeoEEBoXJnZW6sgus6Q@mail.gmail.com>

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Well,  100mb might be relevant if you ever want to dual-boot. The relevant
efi file seems to be < 100k

It may go up in size, but I doubt we will see a 100x increase.

/A

On Tue, Jan 31, 2017 at 1:03 PM, krad <kraduk@gmail.com> wrote:

> Its worth noting you should also go for GPT layout and have a 100meg or so
> partition provisioned as well so you can do a uefi boot. Even if you arent
> going to use it right now.
>
>
> On 30 January 2017 at 03:41, Aristedes Maniatis <ari@ish.com.au> wrote:
>
> > On 30/1/17 2:20pm, Freddie Cash wrote:
> > > And, you may be able to do that on the existing disks, as ZFS now
> leaves
> > a MB or two of "slack space" at the end of the device used in the vdev.
> > This allows for using drives/partitions that are the same size in MB but
> > have different numbers of sectors. This was an issue on the early ZFS
> days.
> > >
> > > So, you may be able to resize the freebsd-zfs partition by a handful of
> > KB without actually changing the size of the vdev.
> >
> >
> > Brilliant, thank you. That worked a treat with a new boot size of 256k.
> >
> >
> > Note that this page: https://wiki.freebsd.org/
> RootOnZFS/GPTZFSBoot/Mirror
> > needs to be adjusted. This line:
> >
> >     gpart add -b 34 -s 128k -t freebsd-boot ad0
> >
> > needs to instead be
> >
> >     gpart add -a 4k -s 512k -t freebsd-boot ad0
> >
> >
> > I don't have edit rights. Probably someone needs to clean up and merge
> > many of these pages: https://wiki.freebsd.org/RootOnZFS/
> >
> >
> > Ari
> >
> >
> >
> > --
> > -------------------------->
> > Aristedes Maniatis
> > CEO, ish
> > https://www.ish.com.au
> > GPG fingerprint CBFB 84B4 738D 4E87 5E5C  5EFA EF6A 7D2E 3E49 102A
> >
> >
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