Re: further help on debugging a hang
Re: further help on debugging a hang
- Subject: Re: further help on debugging a hang
- From: Dan Shoop <email@hidden>
- Date: Tue, 12 Dec 2006 23:26:13 -0500
At 1:57 AM +0100 12/13/06, Giuliano Gavazzi wrote:
sorry to disturb again, but the machine I am debugging cannot be
left off-line too long as it is a production server (and is at a
remote location), so I am looking for some advice.
A recap:
PowerMacG4 DP400 10.4.8 + security update 007 + ACARD 6890M SATA
RAID configured for mirroring.
Symptoms: every few days the machine hangs (it looks like the old
"rainbow of death") remaining responsive to pings but otherwise
inaccessible from both the console and ssh. Even telnet to an open
tcp port (say 80) will establish the connection but the process on
the other side will not respond any further (in this example a GET /
HTTP/1.0 <cr> <cr> will not give anything).
Right, because it's hung in an [disk] IO wait state that needs to
complete before any further IO can occur. All of the above require IO
so you're blocked while the wait ccompletes,
I have two prime suspects: the ACARD (driver or card)
Likely
What happens when you remove it and the driver from the system?
and lookupd.
Doubt it's lookupd
--
-dhan
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Dan Shoop AIM: iWiring
Systems & Networks Architect http://www.ustsvs.com/
email@hidden http://www.iwiring.net/
1-714-363-1174
"The wise man doesn't give the right answers, he poses the right
questions." -- Claude Levi-Strauss
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