Disk Enclosures
cancel
Showing results for 
Search instead for 
Did you mean: 

The problem on hp9000 D270 & EMC symmetrix

yang haijun
Occasional Advisor

The problem on hp9000 D270 & EMC symmetrix

Hi all,
I meet a problem on CU site.
host: hp9000 D270
OS: HPUX 11.0
disk array: EMC symmetix.

In the syslog I find that error msg. as below:
**************** begin ***********************
Dec 17 20:14:17 hp2 vmunix: emcp:Mp:Error: Path c15t1d3 to Symm 000185400321 vol
0019 is dead.^M
Dec 17 20:14:17 hp2 vmunix: emcp:Mp:Error: Killing bus 15 to Symm 000185400321 p
ort FA 15aB.^M
Dec 17 20:14:17 hp2 vmunix: emcp:Mp:Error: Path c15t1d2 to Symm 000185400321 vol
0018 is dead.^M
Dec 17 20:14:17 hp2 vmunix: emcp:Mp:Error: Path c15t1d1 to Symm 000185400321 vol
0017 is dead.^M
Dec 17 20:14:17 hp2 vmunix: emcp:Mp:Error: Path c15t1d0 to Symm 000185400321 vol
0016 is dead.^M
**************** end **************************


but the data on disk array is still accessible.
I have also attached the syslog in the attached.

thanks in advance.
4 REPLIES
Tom Geudens
Honored Contributor

Re: The problem on hp9000 D270 & EMC symmetrix

Hi,
Could it be that you have 2 links to this array ? That would explain why you can still access the data ... you've only lost 1 link. You should be able to verify this by doing an vgdisplay -v of the volumegroups on the array.

From your syslog ...

I would check the connection to the FA15aB port on your symmetrix. It could be the HBA (in the Unix), the fibre, ... or any other component (port on accesshub, port on switch, port on director) you've got inbetween.

Regards,
Tom

A life ? Cool ! Where can I download one of those from ?
yang haijun
Occasional Advisor

Re: The problem on hp9000 D270 & EMC symmetrix

I think we will go to Symmetrix to check the issue first.

But i want to know the meaning of "killing" ? Is this action issued by OS or adminstrator?
Vincent Fleming
Honored Contributor

Re: The problem on hp9000 D270 & EMC symmetrix

emcp is the kernel module that is issuing the message, according to your syslog.

Correct me everyone (you always do!), but I'm pretty sure that's EMC's Power Path product, and what it's doing is disabling that path to the array because it got an error on a LUN on that path.

Good luck,

Vince
No matter where you go, there you are.
yang haijun
Occasional Advisor

Re: The problem on hp9000 D270 & EMC symmetrix

You have reminded me, emcp should be emc powerpath kernel module. By issuing powermt display we can see some historical errors(just counts, not detailed events). However, it has been restored.

Thank you all.