EMS says a disk failure but ioscan shows it as online

[kathykathy]

Happy New Year and thanks ahead for your reply.

 I get alert from EMS few times so far

>------------ Event Monitoring Service Event Notification ------------<

 Notification Time: Fri Dec 30 15:32:12 2011

 wpgrx002 sent Event Monitor notification information:

 /storage/events/disks/default/64000_0xfa00_0x1

 is >= 3.

Its current value is CRITICAL(5).

 ..........  

Summary:

     Disk at hardware path 64000/0xfa00/0x1 : Hardware failure

 Description of Error:

      The device driver has received an unspecified hardware error from the

     device.

-----------------------------------------------

But i did a health check and the disk is online.

#: ioscan -P health -H 64000/0xfa00/0x1
Class     I  H/W Path  health
===============================
disk     28  64000/0xfa00/0x1  online

-----------------------------------------------

what should i do to find where the problem is?

[basant]

Please check following things after that it will confirm disk is faulty or not

1. Check for I/O Errors in the /var/adm/syslog/syslog.log

2.  # pvdisplay  -l /dev/dsk/faulty disk

          /dev/dsk/faulty disk : Lvm_disk=yes

        disl is still in vg

3. #vgdisplay -v | more  

     if disk is faulty , it will show pv status unavailable

4. Try this on faulty disk , if it gives I/O error ,it is faulty

      # dd if=/dev/rdsk/c1t3d0 of=/dev/null bs=1024k &

       dd read error:  I/O error

       0+0 records in 0+0 records out

[kathykathy]

thanks...a reboot fixed the problem.

[Arockiasamy K]

Might be sone LUN got disturbed/FC link might be down. thats why EMS given some alert.

I think that was a temporary failure. EMS alert is just a happened event. not related to real time like ioscan.