System Hang

[Midrange]

I have a pSeries 6E1 5.1.0 . My system is intermittently hanging inclusing the X11 console. I can still ping the server and run the telnet. When i have the screen on the telnet, i cannot input any on the keyboard. My keyboard is not responding on the AIX windows..

Is there any smit setup do i need to configure?

thanks,

EM

 

[franksoprano]

EM,

Let met get this straight, you say it hangs on the GUI but you can telnet into the box from another machine on the same network, when you telnet to it are you able to actually log in? What happens after you log in? Is there where you cannot input any other commands?

Have you tried bouncing the box by anychance? Have you made any recent upgrades, made any system configuration changes, new devices? Any LED codes on the panel?

Frank-

 

[Midrange]

I can have the signon screen on the PC but i cannot enter any commands. The keyboard is hang for the AIX session. But the keyboard is working fine for other windows programs.. no error code on the panel and no error report generated..

thanks..
EM

 

[dblair]

Does the keyboard hang in the telnet session or the GUI logon or both ?

 

[franksoprano]

Can you access the system via a regular ascii terminal?

 

[Midrange]

DBLAIR,
the keyboard hang on both telent and GUI X11..

FRANKSOPRANO,
After the hang, I have connected the ASCII terminal. but hang did not occur again at this time that is why io can determine whether the ascii can still logon if hang occurs..


dblair, frank what else do i need to check on. Is is possible that my OS is the problem. I've tried to run fsck on /(root) but have problem on inode and block map. Do you think it can be the possible problem.

 

[MoshiachNow]

HI,

Please post the output of the following:

1.df
2.errpt|head 30

thanks "Long live king Moshiach !"

http://www.7for70.com/

 

[sectorseveng]

Sounds like a networking issue to me.

Check to see that your adapters are running at the same speed as the hubs/switches (use entstat -d for each adapter). Remember to never trust autonegotiate and always hard set it to the required speed/duplex settings.

Check the network options (no -a), looking in particular for things like tcp_sendspace & recvspace to ensure the values aren't too low, thewall should no longer be a problem as it's a readonly variable at 5.x and should be correctly configured by the system. You also need to ensure that rfc1323 is active if you are chucking large amounts of data over the network.

If you are using NFS on this system then check the options (nfso -a), again if large amounts of data are being sent then ensure that nfs_rfc1323 is active.

Finally you could check name resolution and authentication, are you using DNS for name resolution & are there problems accessing the DNS server, are you using NIS for authentication? &c &c &c.