[CentOS] CentOS 4.4 Strange hang on a poweredge 2900.

Sun Dec 24 16:23:54 UTC 2006
Andrew Bogecho <andrewb at cs.mcgill.ca>

> Peter Serwe wrote:
>> I have a brand new poweredge 2900 with 10 SAS drives configured in two
>> arrays via the built-in PERC 5 raid controller as:
>> raid 1: 2x73GB
>> raid 10: 8x300GB
>> It's got 4GB of ram, and it's intended to be an NFS filestore.
>> For some strange reason, logging in with ssh works great, it returns a
>> prompt, all seems well.
>> I go to run a simple command like 'top' or 'yum -y install <package>',
>> and my xterm/ssh session just locks.  In some cases, it's drawn half of
>> the top screen and hung, in other cases, it doesn't even do that.  Kill
>> the xterm window, bring a new one up, right back in, try it again, it
>> repeats.
>> What's interesting to me is that I have all kinds of other 'lesser'
>> systems running CentOS 4.4, and I have none of these issues with them.
>> My ~1.1TB raid 10 drive is
>> sliced up into 4 parts, with the big one being about 950GB.  Near as I
>> can figure, I haven't hit any limitations, but I'm stumped by something
>> that I *think* is probably either relatively trivial, or just a straight
>> out hardware incompatibility.  One thought is that it could be related
>> to the Gb ethernet devices (bge).
>> Commands like 'ifconfig -a' work great.  'dmesg | grep eth0' locks up
>> the session.
>> This is relatively frustrating.  Googling doesn't seem to net any real
>> results, and I can't seem to find anything relevant in the logs.
>> One more relevant bit to add, this behavior does not exist from the
>> console.
>> Peter
> Not answering your question, but I have to ask, what does ifconfig -a
> do?  I man ifconfig and it does not show an -a switch.  Looked it up on the
> Internet, still can't find a -a switch.


>From the ifconfig man page:

       If no arguments are given, ifconfig displays the status of the
currently active interfaces.  If a single interface argument is
given, it displays the status of the given interface only; if a
single -a argument is given, it displays the status of all
interfaces, even those that are down.  Otherwise, it configures an


> It seems like this is a NIC issue or I/O of the MB.  Do you have another
> NIC you can test it with?
> --
> Damon L. Chesser
> damon at damtek.com damon at okfairtax.org
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