Red Hat Bugzilla – Bug 190449
REGRESSION: Serial console hang on HP Integrity servers
Last modified: 2007-11-30 17:07:24 EST
Description of problem:
The remote serial console using the MP (management processor) interface on many
of the HP Integrity servers hangs on recent RHEL4 kernels. This was introduced
by the patch for BZ 166591 and I updated that BZ with this info. Since this has
been in for about 2 weeks now I am filing a new BZ to make it clear that this is
a very critical regression.
Version-Release number of selected component (if applicable):
Started in 2.6.9-34.21
On certain systems I hit this 100% of the time. All of the low end systems hit
this at one time or another. The rx2600 can hit it 100% of the time when I
bring up any network device via ifup (appears that the messages it writes to the
console trigger it).
Steps to Reproduce:
Easiest and most reliable way is to:
1. Connect to the management processor console via telnet
2. configure network devices to not enable on boot
3. Install 2.6.9-34.22 or later
4. after bootup log in via console
5. ifup eth0 - note that it hangs until you hit a key
It also often hangs when it starts init or sometimes at other random points
Doug: I hate to ask ... but it's a good data point ... Has the firmware changed
on the MP at all recently?
That is a good question but no, I have not changed firmware on the systems in my
own test ring in quite some time. Also, I can make my systems work OK when I
removed the serial patch for BZ 166591.
ok, this is fixed by reverting the patch for 166591