Hi all,
I'm setting up SOL (Serial-over-LAN) but can't see OS boot message -- GRUB and
login prompt are OK. Could anyone please tell me how to use SOL?
http://wiki.xensource.com/xenwiki/XenSerialConsole says to set xencons=ttySX,
but all messages after GRUB are disappeared when setting xencons=ttyS2 because
dmsg and setserial can't find out ttyS*.
[root@charlie ~]# dmesg | grep ttyS
Bootdata ok (command line is ro root=/dev/vg_dom0/lv_root xencons=ttyS2
console=ttyS2)
Kernel command line: ro root=/dev/vg_dom0/lv_root xencons=ttyS2 console=ttyS2
Xen virtual console successfully installed as ttyS2
[root@charlie ~]# setserial -g /dev/ttyS*
/dev/ttyS0: No such device or address
/dev/ttyS1: No such device or address
Cannot get serial info: Invalid argument
/dev/ttyS3: No such device or address
When setting xencons=off, I can see GRUB and login prompt via SOL but (XEN)
message is not shown on all devices (via SOL and console monitor) and OS boot
message is shown on console monitor only.
[root@charlie ~]# dmesg | grep ttyS
Bootdata ok (command line is ro root=/dev/vg_dom0/lv_root xencons=off
console=ttyS2)
Kernel command line: ro root=/dev/vg_dom0/lv_root xencons=off console=ttyS2
serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
serial8250: ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A
serial8250: ttyS2 at I/O 0x3e8 (irq = 5) is a 16550A
00:06: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
00:07: ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A
00:08: ttyS2 at I/O 0x3e8 (irq = 5) is a 16550A
[root@charlie ~]# setserial -g /dev/ttyS*
/dev/ttyS0, UART: 16550A, Port: 0x03f8, IRQ: 4
/dev/ttyS1, UART: 16550A, Port: 0x02f8, IRQ: 3
/dev/ttyS2, UART: 16550A, Port: 0x03e8, IRQ: 5
/dev/ttyS3, UART: unknown, Port: 0x02e8, IRQ: 3
-----
Motherboard: Supermicro X7SPA-HF-D525
BIOS: AMI 02.67
BMC: Nuvoton WPCM450
OS: Scientific Linux SL release 5.5 (Boron)
Kernel: 2.6.18-238.12.1.el5xen
Xen: xen-3.0.3-120.el5_6.2.x86_64
SOL viewer: Supermicro IPMI View 2.7.21
Supermicro SMC IPMI Tool 1.8.1
ipmitool 1.8.11
-----
BIOS > Advanced > Remote Access Configuration
Remote Access [Enabled]
Serial port number [COM3]
Base Address, IRQ [3E8h, 5]
Serial Port Mode [19200 8,n,1]
Flow Control [None]
Redirection After BIOS POST [Always]
Terminal Type [VT100]
VT-UTF8 Combo Kye Support [Enabled]
Sredir Memory Display Delay [No Delay]
-----
/boot/grub/grub.conf
default=0
timeout=5
#splashimage=(hd0,0)/grub/splash.xpm.gz
serial --unit=2 --speed=19200 --word=8 --parity=no --stop=1
terminal --timeout=5 serial console
hiddenmenu
title Scientific Linux SL (2.6.18-238.12.1.el5xen) [test]
root (hd0,0)
kernel /xen.gz-2.6.18-238.12.1.el5 console=tty0 console=com3
com3=19200,8n1
module /vmlinuz-2.6.18-238.12.1.el5xen ro root=/dev/vg_dom0/lv_root
xencons=off console=ttyS2
module /initrd-2.6.18-238.12.1.el5xen.img
-----
* The below message is shown via SOL and console monitor
GRUB Loading stage2...
Press any key to continue.
* The below message is shown via SOL and console monitor
Booting 'Scientific Linux SL (2.6.18-238.12.1.el5xen) [test]'
root (hd0,0)
Filesystem type is ext2fs, partition type 0xfd
kernel /xen.gz-2.6.18-238.12.1.el5 console=tty1 console=com3 com3=19200,8n1
[Multiboot-elf, <0x100000:0xed5c8:0x165a38>, shtab=0x353078, entry=0x100000]
module /vmlinuz-2.6.18-238.12.1.el5xen ro root=/dev/vg_dom0/lv_root xencons=off
console=ttyS2
[Multiboot-module @ 0x354000, 0x9d7fc8 bytes]
module /initrd-2.6.18-238.12.1.el5xen.img
[Multiboot-module @ 0xd2c000, 0x85b600 bytes]
* (XEN) message is NOT shown via SOL and console monitor
* The below message is shown via CONSOLE MONITOR ONLY with xencons=off
INIT: version 2.86 booting
Welcome to Scientific Linux SL
Press 'I' to enter interactive startup.
<snip>
* The below message is shown via SOL and console monitor with xencons=off
Scientific Linux SL release 5.5 (Boron)
Kernel 2.6.18-238.12.1.el5xen on an x86_64
charlie.rewse.jp login:
-----
Thanks,
Tats
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