Date: Fri, 4 Nov 2016 14:44:52 +0000 From: Glen Barber <gjb@FreeBSD.org> To: Ian Smith <smithi@nimnet.asn.au> Cc: freebsd-stable@freebsd.org Subject: Re: 1MB swap partition on 11.0 memstick Message-ID: <20161104144452.GB79915@FreeBSD.org> In-Reply-To: <20161104183856.U41537@sola.nimnet.asn.au> References: <20161104183856.U41537@sola.nimnet.asn.au>
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On Fri, Nov 04, 2016 at 06:50:16PM +1100, Ian Smith wrote:
> Still wondering .. I have no spare box to install 11.0 on at present but=
=20
> want to be sure the memstick mentioned below will be fit for purpose. =20
> I can easily add a 1.0MB swap partition to that, but is it necessary?
>=20
> From:
> # $FreeBSD: head/release/amd64/make-memstick.sh 293188 2016-01-05 03:20:4=
5Z gjb $
> [..]
> mkimg -s gpt -b ${1}/boot/pmbr -p efi:=3D${1}/boot/boot1.efifat \
> -p freebsd-boot:=3D${1}/boot/gptboot -p freebsd-ufs:=3D${2}.part \
> -p freebsd-swap::1M -o ${2}
>=20
> =3D=3D=3D reposted:
>=20
> Tried in -questions but no takers ..
>=20
> root@x200:~ # mdconfig -lv
> md0 vnode 700M =20
> /home/smithi/FreeBSD-11.0-RELEASE-amd64-memstick.img
> root@x200:~ # gpart show -p md0
> =3D> 3 1433741 md0 GPT (700M)
> 3 1600 md0p1 efi (800k)
> 1603 125 md0p2 freebsd-boot (62k)
> 1728 1429968 md0p3 freebsd-ufs (698M)
> 1431696 2048 md0p4 freebsd-swap (1.0M)
>=20
> What is the 1.0M swap partition for? Is it needed by bsdinstall?
>=20
> I have an MBR-scheme sliced memstick using boot0 with that md0p3 dd'd to=
=20
> da0s2a which boots fine, but have only run it as 'Live CD' and have not=
=20
> run the installer, but am wondering if a) that swap partition is really=
=20
> needed and if so, b) what can usefully be done with 1MB of swap ..
>=20
I would need to look through the commit logs to confirm, but if I recall
correctly, the memstick images failed to boot properly without the 1MB
swap after the freebsd-ufs partition after converting the image build to
use mkimg(1).
Glen
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