fcmsutil: How destructive a test this would be?

[Ralph Grothe]

Hello,

I got an EMS alert from dm_TL_adapter for the HBA @ 0/3/0/0,
and it is advising me to perform a loopback test.
However, the warning is somewhat disturbing.
Could the test cause data corruption for, say pending write requests?


# ioscan -knfdtd
Class I H/W Path Driver S/W State H/W Type Description
=================================================================
fc 0 0/3/0/0 td CLAIMED INTERFACE HP Tachyon XL2 Fibre Channe
l Mass Storage Adapter
/dev/td0
fc 1 0/6/0/0 td CLAIMED INTERFACE HP Tachyon XL2 Fibre Channe
l Mass Storage Adapter
/dev/td1


# /opt/fcms/bin/fcmsutil /dev/td0 lb plm

WARNING: This is a DESTRUCTIVE test.
This might result in failure of current I/O requests.
Do you want to continue? (y/n) [n]...

[IT_2007 · Accepted solution]

This is common alarm even if adapter is not hooked up to SAN LUNs. If you are sure what you are doing then it is ok.

This alarm gives one more chance before you proceed because people may not realise they are doing on the right card.

[Jaime Bolanos Rojas.]

Ralph!

That is an informational message as stated above, it appears with several options of fcmsutil, the intention is to call you attention to make sure you got the right options selected before procedding.

It should not destroy nothing.

Regards,

Jaime.

[Ralph Grothe]

Thanks,
you're right, nothing to worry about.

# /opt/fcms/bin/fcmsutil /dev/td0 lb plm

WARNING: This is a DESTRUCTIVE test.
This might result in failure of current I/O requests.
Do you want to continue? (y/n) [n]...y
Data came back intact