Red Hat Bugzilla – Bug 202959
HVM serial console hangs in grub
Last modified: 2009-12-14 16:12:34 EST
Description of problem:
Serial console inside an HVM domain works great from the kernel side.
However, the boot loader grub is unable to use the serial console. The domain
will just sit there and eat CPU time, without making any progress after having
printed the first line.
Version-Release number of selected component (if applicable):
Set up the HVM guest OS to use serial console.
serial --unit=1 --speed=115200
terminal --timeout=5 serial console
And for the guest OS:
kernel /vmlinuz-2.6.9-39.EL ro root=/dev/VolGroup00/LogVol00 console=tty0
It would have been extremely useful to be able to get at the grub menu via
serial console. I know some of our customers like manipulating all systems via
serial console and may not have VNC access to their servers, even their virtual
ones, so getting this issue fixed will matter to them.
change QA contact
Just tried it with RHEL5.1, and the serial console for grub seems to work fine.
Oops, hit the wrong button.
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.