URL:
<http://savannah.gnu.org/bugs/?44026>
Summary: legacy_configfile fail to boot system with xen
pvgrub
Project: GNU GRUB
Submitted by: viliar
Submitted on: Fri 16 Jan 2015 05:50:04 PM GMT
Category: Booting
Severity: Major
Priority: 5 - Normal
Item Group: Software Error
Status: None
Privacy: Public
Assigned to: None
Originator Name: Alex
Originator Email: m_dor...@mail.ru
Open/Closed: Open
Discussion Lock: Any
Release:
Release: 2.02~beta1
Reproducibility: Every Time
Planned Release: None
_______________________________________________________
Details:
I'm trying to replace old pvgrub in xen env with new pvgrub2 and use it for
booting domU with grub2 and grub-legacy inside via universal grub.cfg (search
apropriate config file and then boot system with it).
According
https://blog.xenproject.org/2015/01/07/using-grub-2-as-a-bootloader-for-xen-pv-guests/
I have compiled grub for i386-xen, x86_64-xen. domU with grub2 booting
correct. But trying to load grub-legacy menu.lst inside domU with
legacy_configfile has been failed:
error: couldn't load file *kernel-version*
error: you need to load the kernel first.
Looks like where is no mapping real device (xen/xvda) with (hd0), so system
cannot boot.
Manual "set root" allow to boot system with legacy_kernel/legacy_initrd (see
bellow)
============================================
Additional system information
dom0: fedora21, xen 4.5.
domU: fedora20/21 (kernel = "/usr/lib/xen/boot/grub-x86_64-xen.bin")
grub: grub-2.02~beta2
(compiled with CFLAGS="-Wno-error=cpp" ./configure --target=x86_64
--with-platform=xen; make
CFLAGS="-Wno-error=cpp" ./configure --target=i386 --with-platform=xen; make)
pvgrub create:
grub-bootstrap.cfg:
normal (memdisk)/grub.cfg
test grub.cfg:
set root=(xen/xvda,msdos1)
if search -s -f /boot/grub/menu.lst; then
legacy_configfile /boot/grub/menu.lst
fi
tar cf memdisk.tar grub.cfg
grub-mkimage -O x86_64-xen -c grub-bootstrap.cfg -m memdisk.tar -o
grub-x86_64-xen.bin /usr/lib/grub/x86_64-xen/*.mod
domU /boot/grub/menu.lst:
title Fedora release 20 (Heisenbug) via grub-legacy config
root (hd0,0)
kernel /boot/vmlinuz-3.17.8-200.fc20.x86_64 root=/dev/xvda1 ro
clocksource=xen ipv6.disable=1 biosdevname=0 net.ifnames=0 console=hvc0
initrd /boot/initramfs-3.17.8-200.fc20.x86_64.img
Boot error:
Booting `Fedora release 20 (Heisenbug) via grub-legacy config'
error: couldn't load file /boot/vmlinuz-3.17.8-200.fc20.x86_64.
error: you need to load the kernel first.
Press any key to continue...
Generated config vi legacy_configfile looks this way:
|set root='(hd0,1)'; set legacy_hdbias='0'
|
|legacy_kernel '/boot/vmlinuz-3.17.8-200.fc20.x86_64'
'/boot/vmlinuz-3.17.\|
|8-200.fc20.x86_64' 'root=/dev/xvda1' 'ro' 'clocksource=xen'
'ipv6.disable=1\|
|' 'biosdevname=0' 'net.ifnames=0' 'console=hvc0'
|
|legacy_initrd '/boot/initramfs-3.17.8-200.fc20.x86_64.img'
'/boot/initramfs\|
|-3.17.8-200.fc20.x86_64.img'
|
Variables:
grub> ls
(memdisk) (proc) (xen/xvda) (xen/xvda,msdos1)
grub> set
?=18
DAY=16
HOUR=17
MINUTE=27
MONTH=1
SECOND=48
WEEKDAY=Friday
YEAR=2015
check_signatures=no
color_highlight=black/light-gray
color_normal=light-gray/black
config_directory=(memdisk)
config_file=(memdisk)/grub.cfg
default=0
feature_200_final=y
feature_all_video_module=y
feature_chainloader_bpb=y
feature_default_font_path=y
feature_menuentry_id=y
feature_menuentry_options=y
feature_nativedisk_cmd=y
feature_ntldr=y
feature_platform_search_hint=y
feature_timeout_style=y
grub_cpu=x86_64
grub_platform=xen
lang=
legacy_hdbias=0
locale_dir=
net_default_ip=(null)
net_default_mac=(null)
net_default_server=
pager=
prefix=(memdisk)/boot/grub
pxe_default_server=
root=hd0,1
secondary_locale_dir=
Manual "set root" allow to boot system with legacy_kernel/legacy_initrd:
grub> set root=(xen/xvda,msdos1)
grub> legacy_kernel '/boot/vmlinuz-3.17.8-200.fc20.x86_64'
'/boot/vmlinuz-3.17.8
-200.fc20.x86_64' 'root=/dev/xvda1' 'ro' 'clocksource=xen' 'ipv6.disable=1'
'bio
sdevname=0' 'net.ifnames=0' 'console=hvc0'
grub> legacy_initrd '/boot/initramfs-3.17.8-200.fc20.x86_64.img'
'/boot/initramf
s-3.17.8-200.fc20.x86_64.img'
grub> boot [ initramfs-3.17.8-200 8.92MiB 100% 17.09KiB/s
]
[ 0.000000] Initializing cgroup subsys cpuset
[ 0.000000] Initializing cgroup subsys cpu
...
Fedora release 20 (Heisenbug)
Kernel 3.17.8-200.fc20.x86_64 on an x86_64 (hvc0)
localhost login:
...
============================================
I didn't find workarounds for it yet. Can make some other testing if it
needed. Thank you.
|
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