freebsd stable - Jan 2017 - Boot partition size

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 at 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
>
>

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 at 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 at 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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