Boot problem with grub; Arch Linux, Xen, DomU

Question

Inside my Dom0

My error log:

sudo xl create /etc/xen/arkOS-Dev_PV.cfg
/var/log/xen/bootloader.1.log
 pyGRUB version 0.6
 ┌────────────────────────────────────────────────────────────────────────┐
 │ Arch GNU/Linux, with Linux core repo kernel │
 │ │
 │ │
 │ │
 │ │
 │ │
 │ │
 │ │
 └────────────────────────────────────────────────────────────────────────┘
Use the ^ and ┴ keys to select which entry is highlighted.
Press enter to boot the selected OS, 'e' to edit the
commands before booting, 'a' to modify the kernel arguments
before booting, or 'c' for a command line.
[Errno 2] No such file or directory
Error opening /boot/vmlinuz-linux in guest

My old setup:

/etc/xen/ArkOS-Dev.cfg.old

name = 'ArkOS-Dev'
kernel = "/mnt/arch/boot/x86_64/vmlinuz"
ramdisk = "/mnt/arch/boot/x86_64/archiso.img"
extra = "archisobasedir=arch archisolabel=ARCH_201511"
memory = 512
disk = [ "phy:/dev/sda3,xvda,w", "file:/home/xen/ISO/archlinux-2015年11月01日-dual.iso,xvdb:cdrom,r" ]
vif = [ 'mac=00:16:3e:49:2b:a1,bridge=xenbr0' ]

My current setup:

/etc/xen/Arkos-Dev.cfg

name = 'ArkOS-Dev'
bootloader = "pygrub"
memory = 512
disk = [ "phy:/dev/sda3,xvda,w" ]
vif = [ 'mac=00:16:3e:49:2b:a1,bridge=xenbr0' ]

lsblk -f

NAME FSTYPE LABEL UUID MOUNTPOINT
sda 
|-sda1 vfat FF2C-B8A3 /boot
|-sda2 btrfs b3f4f40f-a8a1-4438-a187-dc02f2104340 /
|-sda3 
`-sda4 swap f90e6e95-5f00-4138-aa76-13feb4bce985 [SWAP]

mount -o loop /home/xen/ISO/archlinux-201511.01-dual.iso /mnt ls /mnt -lah

total 26K
drwxr-xr-x 1 root root 2.0K Nov 1 09:34 .
drwxr-xr-x 1 root root 136 Oct 29 20:39 ..
drwxr-xr-x 1 root root 2.0K Nov 1 09:34 EFI
drwxr-xr-x 1 root root 2.0K Nov 1 09:35 arch
drwxr-xr-x 1 root root 2.0K Nov 1 09:34 isolinux
drwxr-xr-x 1 root root 2.0K Nov 1 09:34 loader

mount /dev/sda3 /mnt

mount: wrong fs type, bad option, bad superblock on /dev/sda3,
 missing codepage or helper program, or other error
 In some cases useful info is found in syslog - try
 dmesg | tail or so.

Inside my DomU (via old setup)

lsblk -f

http://pastebin.archlinux.fr/1717775

arch-chroot /mnt /bin/bash lsblk -f

http://pastebin.archlinux.fr/1717771

ls -lah /boot

http://pastebin.archlinux.fr/1717772

My grub file:

/boot/grub/grub.cfg

http://pastebin.archlinux.fr/1717774

• Rui F Ribeiro: what are the advantages of running grub in a paravirtualized machine instead of booting directly the kernel?
• Folaht: I don't know. I got this configuration from here: wiki.archlinux.org/index.php/…

Answer 1

Finally figured out that DomU doesn't need a '/boot' partition and that 'raw partition = single partition' (I think). Thus, I need LVM as I still want swap space on my DomU. Since LVM is not easy, my next question is located at: ...