Hi, Folks ...
I'm trying to set up a Dom0 Xen system on a Sun X4200 M2 server. The
problem I'm having is getting the xen kernel to send any output to the
serial console, and once up, to have a getty available on that console.
My grub.conf contains this:
##
default=1
timeout=60
serial --unit=0 --speed=9600
terminal --timeout=60 serial console
title Red Hat Enterprise Linux Server (2.6.18-53.1.14.el5)
root (hd0,0)
kernel /vmlinuz-2.6.18-53.1.14.el5 ro root=/dev/md2
console=ttyS0,9600n8
initrd /initrd-2.6.18-53.1.14.el5.img
title Red Hat Enterprise Linux Server (2.6.18-53.1.14.el5xen)
root (hd0,0)
kernel /xen.gz-2.6.18-53.1.14.el5 console=ttyS0,9600n8 console=ttyS0
module /vmlinuz-2.6.18-53.1.14.el5xen ro root=/dev/md2
console=ttyS0,9600n8
module /initrd-2.6.18-53.1.14.el5xen.img
##
If I select the non-xen entry, all works as expected; get the boot
messages (after the grub menu is displayed) on the serial console, and
when the system finishes start up, I'm presented with a functional
login prompt.
If I select the xen entry at the grub menu, though, the system
continues to boot, but the only thing displayed to the serial console
is:
Booting 'Red Hat Enterprise Linux Server (2.6.18-53.1.14.el5xen)'
root (hd0,0)
Filesystem type is ext2fs, partition type 0xfd
kernel /xen.gz-2.6.18-53.1.14.el5 console=ttyS0,9600n8 console=ttyS0
[Multiboot-elf, <0x100000:0xbe5f8:0x50a08>, shtab=0x20f078,
entry=0x100000]
module /vmlinuz-2.6.18-53.1.14.el5xen ro root=/dev/md2
console=ttyS0,9600n8
[Multiboot-module @ 0x210000, 0x8fa4d8 bytes]
module /initrd-2.6.18-53.1.14.el5xen.img
[Multiboot-module @ 0xb0b000, 0x5f9200 bytes]
... and after that, nothing goes to the serial console, nor is there
any login prompt offered. I can ssh in, of course, and run "dmesg".
Here are all the messages related to console stuff:
# dmesg | egrep -i 'console|vga|tty|serial'
Bootdata ok (command line is ro root=/dev/md2 console=ttyS0,9600n8)
Kernel command line: ro root=/dev/md2 console=ttyS0,9600n8
Console: colour VGA+ 80x25
Xen virtual console successfully installed as ttyS0
Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing enabled
8250_pnp: Unknown symbol serial8250_unregister_port
8250_pnp: Unknown symbol serial8250_register_port
Is there something obvious I'm missing? I've googled around for this,
and it seems a common problem, without an obvious solution.
Thanks!
-s-
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