Random SCSI resets

[Gene Kornacki_3]

I'm seeing random SCSI resets in my syslog.log, sometimes they are followed by MAJORWARNINGS to a particular drive. The drive never fails, is always accesible and multiple exercises within xstm show nothing. I'm thinking I'll have to replace the drive soon. Can anyone tell me a way to try and reproduce the error so I can be sure it's not just some goofy snafu within my cluster?

It's happened twice once about two months ago and again last night.

[Pete Randall]

I doubt that it will show you anything more than your xstm exercises, but you could try the old dd trick:

dd if=/dev/rdsk/c0t6d0 of=/dev/null bs=1024k

Replace c0t6d0 with your target, of course.


Pete

[KCS_1]

Hi,

what kind of machine are you running??

Is the disk external or internal??

# pvchange -t 180 /dev/dsk/c#t#d#

I have been the problem on my machine during two times in a day before.

It's better than now..

other way,
if, you have enough time,I recommend reboot your system.

good luck!

[Gene Kornacki_3]

I should have thought of that. Chalk that up to use it or lose it.

It didn't show squat, just performed a harder exercise than xstm.

[Michael Steele_2]

SCSI resets are counted quite reliably in LOGTOOL.


STM > TOOLS > UTILITY > RUN > LOGTOOL > FILE > VIEW > RAW SUMMARY.

Note the first and last dates of transactions and calculate the difference. If the difference is short, like 4 hours, then this is important to note. Now read down the report of hardware addresses and observe the integer numbers in parenthesis. Anything over 150 in this 4 hour period should be called into HP for replacement.

[Gene Kornacki_3]

Changing the timeout is a good idea. I'll implement it, thanks.

It's an external array attached to two L2000's.

I know the default timeout is dependant on the driver, but do you know how to find what that is? A pvdisplay just shows default.

[KCS_1]

Actually,i thought, it's so strange problem why in my case, as soon as replaced old disk to new,followed the error from EMS ,dmesg and syslog,but have never ever seen any misoperation or not accessible and no information from many solution that mstm,ioscan,dd...

oops!! i never have found exactly solution about this problem..hur!

i will try it,again and again..

have a good day!

[KCS_1]

Gene Kornacki !

Look at the man page

# man pvchange

you will get it!