Package: grub-common
Version: 1.98+20100804-14
Severity: wishlist
Tags: patch
Hello,
I need to pass different options for Linux and Xen Linux kernels on my
server. Please look at the exemplary menu entries below:
menuentry 'Debian GNU/Linux, with Linux 2.6.32-5-xen-amd64 and XEN
4.0-amd64' --class debian --class gnu-linux --class gnu --class os
--class xen {
insmod raid
insmod mdraid
insmod lvm
insmod part_gpt
insmod part_gpt
insmod ext2
set root='(lvm0-dom0)'
search --no-floppy --fs-uuid --set
5e6467b4-b670-4ea7-9fb3-9f45b94c93fe
echo 'Loading Linux 2.6.32-5-xen-amd64 ...'
multiboot /boot/xen-4.0-amd64.gz placeholder com1=9600,8n1
console=com1,vga dom0_mem=1024M
module /boot/vmlinuz-2.6.32-5-xen-amd64 placeholder
root=/dev/mapper/lvm0-dom0 ro console=tty0 console=hvc0 3
echo 'Loading initial ramdisk ...'
module /boot/initrd.img-2.6.32-5-xen-amd64
}
menuentry 'Debian GNU/Linux, with Linux 2.6.32-5-xen-amd64' --class
debian --class gnu-linux --class gnu --class os {
insmod raid
insmod mdraid
insmod lvm
insmod part_gpt
insmod part_gpt
insmod ext2
set root='(lvm0-dom0)'
search --no-floppy --fs-uuid --set
5e6467b4-b670-4ea7-9fb3-9f45b94c93fe
echo 'Loading Linux 2.6.32-5-xen-amd64 ...'
linux /boot/vmlinuz-2.6.32-5-xen-amd64
root=/dev/mapper/lvm0-dom0 ro console=tty0 console=ttyS0,9600n8 2
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-2.6.32-5-xen-amd64
}
As you can see I use different consoles for these kernels. I can't set
them in only one GRUB_CMDLINE_LINUX variable in /etc/default/grub file,
because grub-update command will use it for any my Linux kernels...
So I've patched 20_linux_xen and grub-mkconfig scripts and added new
GRUB_CMDLINE_LINUX_XEN variable for options of Xen Linux kernels:
GRUB_CMDLINE_LINUX="console=tty0 console=ttyS0,9600n8 2"
GRUB_CMDLINE_LINUX_XEN="console=tty0 console=hvc0 3"
Of course, GRUB_CMDLINE_LINUX_XEN is optional variable. grub-update will
use GRUB_CMDLINE_LINUX if the new variable is unset or empty.
I believe that now GRUB_CMDLINE_XEN and GRUB_CMDLINE_LINUX_XEN is the
same pair like xenhopt and xenopt for old Grub.
I'm attaching my simple patch. Feel free to use it if you want.
--- 20_linux_xen.orig 2011-05-18 08:13:35.000000000 +0000
+++ 20_linux_xen 2011-05-18 19:37:58.000000000 +0000
@@ -132,11 +132,15 @@
linux_root_device_thisversion=${GRUB_DEVICE}
fi
+ args=${GRUB_CMDLINE_LINUX}
+ if [ "x${GRUB_CMDLINE_LINUX_XEN}" != "x" ]; then
+ args=${GRUB_CMDLINE_LINUX_XEN}
+ fi
linux_entry "${OS}" "${version}" "${xen_version}" false \
- "${GRUB_CMDLINE_LINUX} ${GRUB_CMDLINE_LINUX_DEFAULT}" "${GRUB_CMDLINE_XEN} ${GRUB_CMDLINE_XEN_DEFAULT}"
+ "${args} ${GRUB_CMDLINE_LINUX_DEFAULT}" "${GRUB_CMDLINE_XEN} ${GRUB_CMDLINE_XEN_DEFAULT}"
if [ "x${GRUB_DISABLE_LINUX_RECOVERY}" != "xtrue" ]; then
linux_entry "${OS}" "${version}" "${xen_version}" true \
- "single ${GRUB_CMDLINE_LINUX}" "${GRUB_CMDLINE_XEN}"
+ "single ${args}" "${GRUB_CMDLINE_XEN}"
fi
list=`echo $list | tr ' ' '\n' | grep -vx $linux | tr '\n' ' '`
--- grub-mkconfig.orig 2011-05-18 08:30:41.000000000 +0000
+++ grub-mkconfig 2011-05-18 19:38:11.000000000 +0000
@@ -257,6 +257,7 @@
GRUB_BUTTON_CMOS_ADDRESS \
GRUB_DISTRIBUTOR \
GRUB_CMDLINE_LINUX \
+ GRUB_CMDLINE_LINUX_XEN \
GRUB_CMDLINE_LINUX_DEFAULT \
GRUB_CMDLINE_XEN \
GRUB_CMDLINE_XEN_DEFAULT \
