[this is a message that I sent to xen-users yesterday, but I guess this list may be better - this looks like a problem either in Xen, or in the packaging of 2.6.21-2952.fc8xen].
I've just installed Fedora 8 / xen-2.6.21 on a headless server, but I can't get a serial console login on the Xen version of the kernel.
1 - If I boot into 2.6.23.8-63.fc8, the serial console login works as expected
2 - If I boot into 2.6.21-2952.fc8xen instead, I get all the expected serial output up to the end of the boot process, but no login.
When I boot into the xen kernel, inittab is modified, and the modification removes the agetty on ttyS0. If I compare the old inittab with the new inittab, I get:
46,47c46 < # co:2345:respawn:/sbin/agetty xvc0 96 9600 vt100-nav < co:12345:respawn:/sbin/agetty ttyS0 115200 vt100 ---
co:2345:respawn:/sbin/agetty xvc0 96 9600 vt100-nav
In other words, a commented entry was uncommented, and the following line was deleted, which explains why I can't log in. This is so bizarre that it almost looks like it was done on purpose (was it ? :))
Anyone seen this? Any ideas?
Thanks -
Evan
Evan Lavelle (sa212+fcxen@cyconix.com) said:
2 - If I boot into 2.6.21-2952.fc8xen instead, I get all the expected serial output up to the end of the boot process, but no login.
When I boot into the xen kernel, inittab is modified, and the modification removes the agetty on ttyS0. If I compare the old inittab with the new inittab, I get:
46,47c46 < # co:2345:respawn:/sbin/agetty xvc0 96 9600 vt100-nav
< co:12345:respawn:/sbin/agetty ttyS0 115200 vt100
co:2345:respawn:/sbin/agetty xvc0 96 9600 vt100-nav
In other words, a commented entry was uncommented, and the following line was deleted, which explains why I can't log in. This is so bizarre that it almost looks like it was done on purpose (was it ? :))
Anyone seen this? Any ideas?
Xen takes over the serial port; it's modifying the line to point to the xen console device.
Bill
Bill Nottingham wrote:
46,47c46 < # co:2345:respawn:/sbin/agetty xvc0 96 9600 vt100-nav
< co:12345:respawn:/sbin/agetty ttyS0 115200 vt100
co:2345:respawn:/sbin/agetty xvc0 96 9600 vt100-nav
In other words, a commented entry was uncommented, and the following line was deleted, which explains why I can't log in. This is so bizarre that it almost looks like it was done on purpose (was it ? :))
Anyone seen this? Any ideas?
Xen takes over the serial port; it's modifying the line to point to the xen console device.
Interesting. So the "Serial Console Login configuration" in the manual (v3.0 User's Manual, p13) is wrong? The modified inittab is also incorrect; an error message appears on the serial output, and in the system logs, every 5 minutes ("Dec 14 17:52:35 thor init: Id "co" respawning too fast: disabled for 5 minutes").
How do I get a remote login over a serial line? Is this still possible?
Thanks -
Evan
Evan Lavelle (sa212+fcxen@cyconix.com) said:
Xen takes over the serial port; it's modifying the line to point to the xen console device.
Interesting. So the "Serial Console Login configuration" in the manual (v3.0 User's Manual, p13) is wrong? The modified inittab is also incorrect; an error message appears on the serial output, and in the system logs, every 5 minutes ("Dec 14 17:52:35 thor init: Id "co" respawning too fast: disabled for 5 minutes").
Yeah, the extra '96' seems wrong. Can you file a bug against kudzu?
How do I get a remote login over a serial line? Is this still possible?
How are you booting xen? What's the command line?
Bill