X-Original-To: alpine-user@lists.alpinelinux.org Received: from EUR02-VE1-obe.outbound.protection.outlook.com (mail-oln040092069013.outbound.protection.outlook.com [40.92.69.13]) by lists.alpinelinux.org (Postfix) with ESMTP id 657ABF83166 for ; Sun, 10 Feb 2019 18:36:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=outlook.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=zP3rw166nUkbB2qVT9phSAkDMGTWIOKzP8cEwu7rYtk=; b=ri297fsJltK5MHt61s/bb6/XLoojgrEfZl45pxFteqm5cUy7buJ1P15yOi70qXumD9oI17ZTPbu/fT1lAx5Wix4C+WswHQbLtZzGQwSy4W8EpP/c5PlopCNRewQFB+6VhZ0St6nk6yFUfpUyv1AiRzreJH5l+OkbylWgyssotBi28mn5BK2lkNO/AdR22tQvjPEWSQPFvBnLKBBMqn6pq6NF5SMxJyC8pz7dZRDKL4vex5ddYHOyoXB1v8AlPSo2aHhxI0w9aTSoCCq7rinn/yw048dXjpkkbsh6eF1fZbzUTKE5eekxoN+i1hWnA2LQyfFzh+RGgtvt1mIQBMy0jQ== Received: from AM5EUR02FT011.eop-EUR02.prod.protection.outlook.com (10.152.8.59) by AM5EUR02HT216.eop-EUR02.prod.protection.outlook.com (10.152.9.122) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.20.1580.10; Sun, 10 Feb 2019 18:36:08 +0000 Received: from AM0PR0402MB3699.eurprd04.prod.outlook.com (10.152.8.54) by AM5EUR02FT011.mail.protection.outlook.com (10.152.8.101) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.20.1580.10 via Frontend Transport; Sun, 10 Feb 2019 18:36:08 +0000 Received: from AM0PR0402MB3699.eurprd04.prod.outlook.com ([fe80::6d76:4137:b962:60d]) by AM0PR0402MB3699.eurprd04.prod.outlook.com ([fe80::6d76:4137:b962:60d%4]) with mapi id 15.20.1601.023; Sun, 10 Feb 2019 18:36:05 +0000 From: Marco Boom To: "alpine-user@lists.alpinelinux.org" Subject: [alpine-user] RE: Boot Issue: How do I setup Xen with dom 0 Alpine Linux, LUKS LVM and GRUB on a UEFI platform? Thread-Topic: Boot Issue: How do I setup Xen with dom 0 Alpine Linux, LUKS LVM and GRUB on a UEFI platform? 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The boot partition is gone. The physical disk = /dev/sda contains an esp and luks partition. On the luks partition is an lv= m group containing a swap and root partition. The boot folder is inside the= root partition and mounts the esp partition on /boot/efi. This disk layout= asks for a decryption password twice (once by GRUB2 and once by the ramdis= k). * UEFI and BIOS mode simultanously installed when the OS setup will be = run in UEFI mode. This makes it possible to start the system in UEFI or BIO= S mode, which can be chosen during each boot cycle. * Using GRUB2 configuration scripts to generate the GRUB2 config file i= nstead of manually building the config file. * Fixing some issues with the GRUB2 Xen configuration script. (I didn= =92t find the repository where this script is stored. A pull request could = be made in order to fix these issues in the package). So, now the system supports UEFI mode and BIOS mode, I have tested the Xen = setup in both modes. The system works in BIOS mode but when I start in UEFI= mode I still get a black screen after the Xen kernel is loaded. Maybe this= is an GRUB2 EFI issue since I have found some older messages indicating a = similar problem. But according to Xen documentation it should be able to st= art Xen in UEFI mode by now. Does someone knows the details about EFI, GRUB= 2 and Xen? With kind regards, Marco Boom Van: Marco Boom Verzonden: Monday, January 28, 2019 10:08:00 PM Aan: alpine-user@lists.alpinelinux.org Onderwerp: Boot Issue: How do I setup Xen with dom 0 Alpine Linux, LUKS LVM= and GRUB on a UEFI platform? Hi, I would like to have the following setup: a system in UEFI mode with a hard= disk with GPT partitions. The disk should contain an (unencrypted) EFI Sys= tem Partition, encrypted boot partition and encrypted lvm partition. GRUB s= hould be the bootloader and on top of it I want the Xen kernel and Alpine L= inux as dom 0. In order to install Alpine Linux without Xen I downloaded the ISO image and= burned it on a USB drive with Rufus (GPT, iso mode). Then I I boot from US= B drive in UEFI mode and I can install Alpine successfully. To install Alpine Linux with the customized partitions I run the following = commands (I=92m sorry for the massive amount of code that follows. It is al= so attached as shell files. If you don=92t have much time: scroll down to t= he second to last paragraph.): Setting up Alpine Linux: setup-keymap us us-intl setup-hostname -n localhost hostname=3D$(cat $ROOT/etc/hostname 2>/dev/null) setup-interfaces -i </dev/null passwd setup-timezone -z Europe/Amsterdam setup-proxy none setup-apkrepos -f setup-sshd -c none setup-ntp -c chrony Install tools: apk update apk add cryptsetup e2fsprogs grub-efi haveged lvm2 parted rc-service haveged start # optionally: only needed to wipe disks Creating disk partitions: parted --script /dev/sda mklabel gpt parted --script --align=3Doptimal /dev/sda mkpart fat32 0% 538MB parted --script /dev/sda set 1 esp on parted --script --align=3Doptimal /dev/sda mkpart non-fs 538MB 748MB parted --script --align=3Doptimal /dev/sda mkpart non-fs 748MB 100% parted --script /dev/sda set 3 LVM on # optionally: wiping disks, but this takes too much time for test setups haveged -n 0 | dd of=3D/dev/sda1 haveged -n 0 | dd of=3D/dev/sda2 haveged -n 0 | dd of=3D/dev/sda3 Creating file systems: mkfs.vfat /dev/sda1 # fat32 for ESP cryptsetup luksFormat --type luks /dev/sda2 cryptsetup open --type luks /dev/sda2 bootcrypt mkfs.ext4 /dev/mapper/bootcrypt # encrypted boot partition with ext4 cryptsetup luksFormat --type luks2 /dev/sda3 cryptsetup open --type luks2 /dev/sda3 lvmcrypt pvcreate /dev/mapper/lvmcrypt # encrypted lvm partition vgcreate vg0 /dev/mapper/lvmcrypt lvcreate -L 512M vg0 -n swap lvcreate -l 100%FREE vg0 -n root lvscan # check lvm partitions mkfs.ext4 /dev/vg0/root # ext4 on lvm root partition (alias /dev/mapper/vg0= -root) mkswap /dev/vg0/swap # swap lvm partition (alias /dev/mapper/vg0-swap) Creating mounts and folders, installing Alpine Linux: mount -t ext4 /dev/vg0/root /mnt/ mkdir -p /mnt/boot/ mount -t ext4 /dev/mapper/bootcrypt /mnt/boot/ mkdir -p /mnt/boot/efi/ mount -t vfat /dev/sda1 /mnt/boot/efi/ USE_EFI=3D1 # seems to be ignored by the setup-disk script, can be removed setup-disk -m sys /mnt/ Update configuration: boot_UUID=3D$(blkid | awk "\$1 =3D=3D \"/dev/sda2:\" { print \$2 }" | cut -= d'"' -f2) lvm_UUID=3D$(blkid | awk "\$1 =3D=3D \"/dev/sda3:\" { print \$2 }" | cut -d= '"' -f2) root_UUID=3D$(blkid | awk "\$1 =3D=3D \"/dev/mapper/vg0-root:\" { print \$2= }" | cut -d'"' -f2) swap_UUID=3D$(blkid | awk "\$1 =3D=3D \"/dev/mapper/vg0-swap:\" { print \$2= }" | cut -d'"' -f2) printf "target=3D'bootcrypt'\n" >> /mnt/etc/conf.d/dmcrypt printf "source=3DUUID=3D\"$boot_UUID\"\n" >> /mnt/etc/conf.d/dmcrypt #chroot /mnt rc-update add dmcrypt boot (there seems to be a bug in openrc:= https://github.com/OpenRC/openrc/issues/243) chroot /mnt ln -s /etc/init.d/dmcrypt /etc/runlevels/boot/dmcrypt # tempora= ry workaround printf "UUID=3D$swap_UUID\tswap\tswap\tdefault\t0 0\n" >> /mnt/etc/fstab printf 'features=3D"ata base ide scsi usb virtio ext4 lvm cryptsetup"\n' > = /mnt/etc/mkinitfs/mkinitfs.conf mkinitfs -c /mnt/etc/mkinitfs/mkinitfs.conf -b /mnt/ $(ls /mnt/lib/modules/= ) mkdir -p /mnt/boot/grub/ mkdir -p /etc/default/ cat > /mnt/boot/grub/grub.cfg <> /etc/default/grub <> /etc/modules fi done apk add xen xen-hypervisor for svc in xenstored xenconsoled xendomains xenqemu; do rc-update add $svc default done grubcfg=3D$(cat /boot/grub/grub.cfg) cat > /boot/grub/grub.cfg <

Apparently there were multiple issues with my setup,= so I have updated the scripts.

 

  • Using as much as the same tools during normal setup (eg replacing par= ted with sfdisk)
  • Different disk layout. The boot parti= tion is gone. The physical disk /dev/sda contains an esp and luks partition= . On the luks partition is an lvm group containing a swap and root partitio= n. The boot folder is inside the root partition and mounts the esp partition = on /boot/efi. This disk layout asks for a decryption password twice (once b= y GRUB2 and once by the ramdisk).
  • UEFI and BIOS mode s= imultanously installed when the OS setup will be run in UEFI mode. This mak= es it possible to start the system in UEFI or BIOS mode, which can be chose= n during each boot cycle.
  • Using GRUB2 configuration scripts to gene= rate the GRUB2 config file instead of manually building the config file.
  • Fixing some issues with the GRUB2 Xen configuration scri= pt. (I didn=92t find the repository where this script is stored. A pull req= uest could be made in order to fix these issues in the package).

 

So, now the system supports UEFI mode and BIOS mode,= I have tested the Xen setup in both modes. The system works in BIOS mode b= ut when I start in UEFI mode I still get a black screen after the Xen kerne= l is loaded. Maybe this is an GRUB2 EFI issue since I have found some older messages indicating a similar prob= lem. But according to Xen documentation it should be able to start Xen in U= EFI mode by now. Does someone knows the details about EFI, GRUB2 and Xen?

 

With kind regards,

Marco Boom

 

Van: Marco Boom <marco.boom@outlook.com>
Verzonden: Monday, January 28, 2019 10:08:00 PM
Aan: alpine-user@lists.alpinelinux.org
Onderwerp: Boot Issue: How do I setup Xen with dom 0 Alpine Linux, L= UKS LVM and GRUB on a UEFI platform?

 

Hi,

I would = like to have the following setup: a system in UEFI mode with a hard disk wi= th GPT partitions. The disk should contain an (unencrypted) EFI System Part= ition, encrypted boot partition and encrypted lvm partition. GRUB should be the bootloader and on top of it I = want the Xen kernel and Alpine Linux as dom 0.

In order= to install Alpine Linux without Xen I downloaded the ISO image and burned = it on a USB drive with Rufus (GPT, iso mode). Then I I boot from USB drive = in UEFI mode and I can install Alpine successfully.

To insta= ll Alpine Linux with the customized partitions I run the following commands= (I=92m sorry for the massive amount of code that follows. It is also attac= hed as shell files. If you don=92t have much time: scroll down to the second to last paragraph.):

Setting = up Alpine Linux:

setup-keymap =
us us-intl
setup-hostnam=
e -n localhost
hostname=3D$(=
cat $ROOT/etc/hostname 2>/dev/null)
setup-interfa=
ces -i <<EOF
auto lo<=
/o:p>
iface lo inet=
 loopback
 
auto eth0
iface eth0 in=
et dhcp
  &=
nbsp; hostname $hostname
 
auto eth1
iface eth1 in=
et dhcp
  &=
nbsp; hostname $hostname
EOF
/etc/init.d/n=
etworking --quiet start >/dev/null
passwd
setup-timezon=
e -z Europe/Amsterdam
setup-proxy n=
one
setup-apkrepo=
s -f
setup-sshd -c=
 none
setup-ntp -c =
chrony

 

Install = tools:

apk update
apk add crypt=
setup e2fsprogs grub-efi haveged lvm2 parted
rc-service ha=
veged start # optionally: only needed to wipe disks

 

Creating= disk partitions:

parted --scri=
pt /dev/sda mklabel gpt

parted --scri=
pt --align=3Doptimal /dev/sda mkpart fat32 0% 538MB


parted --scri=
pt /dev/sda set 1 esp on


parted --scri=
pt --align=3Doptimal /dev/sda mkpart non-fs 538MB 748MB


parted --scri=
pt --align=3Doptimal /dev/sda mkpart non-fs 748MB 100%


parted --scri=
pt /dev/sda set 3 LVM on


 


# optionally:=
 wiping disks, but this takes too much time for test setups


haveged -n 0 =
| dd of=3D/dev/sda1


haveged -n 0 =
| dd of=3D/dev/sda2


haveged -n 0 =
| dd of=3D/dev/sda3



 



Creating=
 file systems:


mkfs.vfat /de=
v/sda1 # fat32 for ESP

 


cryptsetup lu=
ksFormat --type luks /dev/sda2


cryptsetup op=
en --type luks /dev/sda2 bootcrypt


mkfs.ext4 /de=
v/mapper/bootcrypt # encrypted boot partition with ext4


 


cryptsetup lu=
ksFormat --type luks2 /dev/sda3


cryptsetup op=
en --type luks2 /dev/sda3 lvmcrypt


pvcreate /dev=
/mapper/lvmcrypt # encrypted lvm partition


vgcreate vg0 =
/dev/mapper/lvmcrypt


lvcreate -L 5=
12M vg0 -n swap


lvcreate -l 1=
00%FREE vg0 -n root


lvscan # chec=
k lvm partitions


mkfs.ext4 /de=
v/vg0/root # ext4 on lvm root partition (alias /dev/mapper/vg0-root)


mkswap /dev/v=
g0/swap # swap lvm partition (alias /dev/mapper/vg0-swap)=




 



Creating=
 mounts and folders, installing Alpine Linux:


mount -t ext4=
 /dev/vg0/root /mnt/


mkdir -p /mnt=
/boot/


mount -t ext4=
 /dev/mapper/bootcrypt /mnt/boot/


mkdir -p /mnt=
/boot/efi/


mount -t vfat=
 /dev/sda1 /mnt/boot/efi/


USE_EFI=3D1 #=
 seems to be ignored by the setup-disk script, can be removed


setup-disk -m=
 sys /mnt/



 



Update c=
onfiguration:


boot_UUID=3D$=
(blkid | awk "\$1 =3D=3D \"/dev/sda2:\" { print \$2 }" =
| cut -d'"' -f2)


lvm_UUID=3D$(=
blkid | awk "\$1 =3D=3D \"/dev/sda3:\" { print \$2 }" |=
 cut -d'"' -f2)


root_UUID=3D$=
(blkid | awk "\$1 =3D=3D \"/dev/mapper/vg0-root:\" { print \=
$2 }" | cut -d'"' -f2)


swap_UUID=3D$=
(blkid | awk "\$1 =3D=3D \"/dev/mapper/vg0-swap:\" { print \=
$2 }" | cut -d'"' -f2)


 


printf "=
target=3D'bootcrypt'\n" >> /mnt/etc/conf.d/dmcrypt


printf "=
source=3DUUID=3D\"$boot_UUID\"\n" >> /mnt/etc/conf.d/d=
mcrypt


#chroot /mnt =
rc-update add dmcrypt boot (there seems to be a bug in openrc: https://gith=
ub.com/OpenRC/openrc/issues/243)


chroot /mnt l=
n -s /etc/init.d/dmcrypt /etc/runlevels/boot/dmcrypt # temporary workaround=



printf "=
UUID=3D$swap_UUID\tswap\tswap\tdefault\t0 0\n" >> /mnt/etc/fstab=



printf 'featu=
res=3D"ata base ide scsi usb virtio ext4 lvm cryptsetup"\n' > =
/mnt/etc/mkinitfs/mkinitfs.conf


mkinitfs -c /=
mnt/etc/mkinitfs/mkinitfs.conf -b /mnt/ $(ls /mnt/lib/modules/)<=
/span>


 


mkdir -p /mnt=
/boot/grub/


mkdir -p /etc=
/default/


cat > /mnt=
/boot/grub/grub.cfg <<EOF


set timeout=
=3D2


insmod all_vi=
deo


menuentry &qu=
ot;Alpine Linux" {


  &=
nbsp; linux   /boot/vmlinuz-vanilla modules=3Dsd-mod,usb-storage,=
ext4 cryptroot=3DUUID=3D$lvm_UUID cryptdm=3Dlvmcrypt root=3DUUID=3D$root_UU=
ID nomodeset quiet rootfstype=3Dext4


  &=
nbsp; initrd  /boot/initramfs-vanilla


}<=
/span>


EOF


cat >> =
/etc/default/grub <<EOF


GRUB_ENABLE_C=
RYPTODISK=3Dy


EOF


grub-install =
--target=3Dx86_64-efi --bootloader-id=3Dalpine --boot-directory=3D/mnt/boot=
 --efi-directory=3D/mnt/boot/efi --recheck --no-nvram


install -D /m=
nt/boot/efi/EFI/alpine/grubx64.efi /mnt/boot/efi/EFI/boot/bootx64.efi<=
/o:p>



 



In this =
way GRUB asks for the boot partition password, initramfs (or kernel or some=
thing else?) asks for the lvm partition password and finally OpenRC asks fo=
r the boot partition password (internet
 provides enough sources why the boot partition needs to be decrypted twice=
).



Finish s=
etup:


umount /mnt/b=
oot/efi/


umount /mnt/b=
oot/


umount /mnt/<=
o:p>


swapoff -a


vgchange -a n=



cryptsetup lu=
ksClose lvmcrypt


cryptsetup lu=
ksClose bootcrypt


 


reboot



 



So at th=
is point I have the system in UEFI mode with GPT partitions, LUKS, LVM, GRU=
B and Alpine Linux. I can use Alpine Linux as expected and no issues seems =
to be here.



Now I wa=
nt to install Xen and run the following commands:


for mod in xe=
n_netback xen_blkback xenfs xen_pciback xen_wdt tun; do=



  &=
nbsp; if modprobe $mod; then


  &=
nbsp;     grep -q -q $mod /etc/modules || echo $mod >=
;> /etc/modules


  &=
nbsp; fi


done


 


apk add xen x=
en-hypervisor


 


for svc in xe=
nstored xenconsoled xendomains xenqemu; do


  &=
nbsp; rc-update add $svc default


done


 


grubcfg=3D$(c=
at /boot/grub/grub.cfg)


cat > /boo=
t/grub/grub.cfg <<EOF


menuentry &qu=
ot;Xen Alpine Linux" {


  &=
nbsp; multiboot2  /boot/xen.gz placeholder smt=3D1


  &=
nbsp; module2 /boot/vmlinuz-vanilla placeholder modules=3Dsd-mod,usb-storag=
e,ext4 cryptroot=3DUUID=3D$lvm_UUID cryptdm=3Dlvmcrypt root=3DUUID=3D$root_=
UUID nomodeset quiet rootfstype=3Dext4


  &=
nbsp; module2 /boot/initramfs-vanilla


}<=
/span>


 


$grubcfg=



EOF



 



When I c=
hoose Xen Alpine Linux from the boot options Xen seems to start without err=
ors, but after it relinquishes the console I got a black screen and the key=
board does not respond anymore. The
 same happens when I remove the quiet kernel option from grub.cfg. It does =
not output any additional information. How can I fix this issue or is this =
setup not supported?



I've not=
iced that when I use multiboot and module instead of multiboot2 and module2=
 Xen throws the error "(XEN) ACPI Error (tbxfroot-8217): A valid RSDP =
was not found [20070126]" and turns ACPI
 off but this time after it relinquishes the console, the system asks for t=
he password of the lvm partition. But the problem here is that the keyboard=
 does not respond, so I cannot fill in the password and continue the boot p=
rocess.


 


 


With kind regards,



Marco Boom

 

 

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