esx server "freezes"

[ccboe]

I have an esx 4.0 server that "freezes" randomly.

When I look at performance I can see blank gaps in all the "switch to" areas.

Don't see any errors or warnings.

Server

Hp dl 380 g6

2 5520 procs

48gb ram

I have another one just like it but 36gb ram with no problems.

Both are running the same version esx.

Kinda looks like hardware, but I get no errors or warnings.

Thanks

Tom

[JCMorrissey]

Hi Tom,

Have you any monitoring software eg Openmanage, openview etc on the system? can you check in their logs if there is

some sign of a hardware issue. Also check the iLO homepage for any sign of hardware faults - check the logs in there to see if there is sudden

resets.

A good test (maybe not possible in your environment) is if the freezes are very frequent to leave the machine in the BIOS overnight - if it freezes/reboots by the morning you are definitely looking at hardware but chances are you certainly are by the looks of things.

[Sreejesh_D]

check the log file /var/log/message for the events during the host freeze. It can give us details on whats going on at that time.

There are various reasons for a host to enter zombie state. 

[ccboe]

No monitoring software.

ILO logs look good.

I guess I did not explain well.

The "freeze" only last 1-5 minutes. Then every thing goes back to working.

Tom

[ccboe]

log looks fine.

see many auth lines coming from my client

and some syslog restarts

Tom

[ccboe]

I have tailed messages while this "freeze" happens. Nothing is being written.

Should syslog be restarting often?

Tom

[ccboe]

I think I got it figured out.

Looking at var/log/vmkernel I saw many errors. Turned out to be dead luns that I removed from SAN.

I refreshed the hba's and not seeing the problems now,

MANY THANKS for the help.

Tom