I spend some time figuring out why my old centos/rhel/fc images I converted for xen didnt have a proper serial console. It turns out they have either a missing or older version of /dev/xvc0.
The fix is to make sure the new device eixsts. either in the initrd and/or some other place. Since these older versions of the OS are likely booting with a newer kernel (from your FC6 host), you have a non working udev, so you need to make sure the device exists manually:
mknod /dev/xvc0 c 250 187
Be aware that there are many wrong/old google hits on the majore/minors of this.
I hope this helps others not waste as much time as me :)
Paul
Paul Wouters paul@xelerance.com writes:
I spend some time figuring out why my old centos/rhel/fc images I converted for xen didnt have a proper serial console. It turns out they have either a missing or older version of /dev/xvc0.
The fix is to make sure the new device eixsts. either in the initrd and/or some other place. Since these older versions of the OS are likely booting with a newer kernel (from your FC6 host), you have a non working udev, so you need to make sure the device exists manually:
mknod /dev/xvc0 c 250 187
This major number is in the range for local/experimental use. LANANA recently approved 204 191 for xvc, and upstream switched to it. Watch out for this when you update your kernel in the future.
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Markus Armbruster -
Paul Wouters