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Re: EVA4400 Command View paths lost

 
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jpmartin
Regular Advisor

EVA4400 Command View paths lost

Hi,

i have again very hard problems with the command view paths to access storage EVA4400's.

It is working fine only if each EVA controller is restarted.

In a CA configuration, when a storage EVA is power off, all paths of the remaining EVA are lost, shown with the 'cvutil paths' command, and the Command View don't see anything.

Restarting each controller resolve or not resolve this problem.

Question : is there a solution to recover the 4 CV paths of each storage EVA.

Note : each EVA4400 is running 9.522.000, Command View 9.1 and the FC switchs 6.2.1

Thank you for help

Jean-Pierre

15 REPLIES 15
blackhawk_1
Advisor

Re: EVA4400 Command View paths lost

What do the EVA logs have to say ?
Is switch showing any kind if issues on any port ?
jpmartin
Regular Advisor

Re: EVA4400 Command View paths lost

under inverstigation
kunalsahoo
Valued Contributor

Re: EVA4400 Command View paths lost

Hi,

this might help your investigation...

CVEVA always talks only to the master controller....when ever master controller reboots the slave becomes Master and that time CVEVA talks to that controller..if all the paths from CVEVA to EVA are fine then there shouldn't be any problem accessing the EVA..
jpmartin
Regular Advisor

Re: EVA4400 Command View paths lost

Yes, i have seen it, 2 Master paths and 2 Slave paths between EVA and CV.

But the problem is when the 2 EVAs are Power on, the CV would have to see 8 paths to access the 2 EVAs, but some paths disapear, and CV hangs as SSSU.

Today, the 2nd EVA is powered off until i have more elements to continue.

kunalsahoo
Valued Contributor

Re: EVA4400 Command View paths lost

it has to be a communication issue........

switches also along with multipathing software can be suspected
kunalsahoo
Valued Contributor

Re: EVA4400 Command View paths lost

it seems to communication error
switches as well as Multipathing software can be suspected
jpmartin
Regular Advisor

Re: EVA4400 Command View paths lost

I will check next time
BBouldin
Advisor

Re: EVA4400 Command View paths lost

You might take a look at the output of a program called CVUTIL.EXE that is in the "Element Manager for StorageWorks HSV" folder. If you're using WS2008 be sure to start your command prompt session with administrator privileges. For example,

cvutil paths

will list the SCSI port/target/LUN that CV can see for each path to the controllers. In my configuration I have 2 total paths to the array, one to each controller. One path says the controller is the Master and the other says Slave.

When CV says that it can't manage the array it's because there's no path to the Master controller. This is a handy tool to let you see the paths that CV is using.

Looking at the status of the ports on the switch might help too. I recently had a bad SFP in my switch that caused problems for CV.

Regards,
Brian
jpmartin
Regular Advisor

Re: EVA4400 Command View paths lost

CVUTIL is the program i used to check the paths, and below when is working fine

C:\Program Files\Hewlett-Packard\Sanworks\Element Manager for StorageWorks HSV>c
vutil paths
Status ................. done.

Path Vendor Product Firmware Node Serial SCMI
Master
WWN Number State
---------------- ------ ------- -------- ------------------- -------------- ----- ------
\\.\Scsi2:-0-1-0 HP HSV300 0952 5001-4380-025B-EA50 P5512G39SWL0K6 Ready Master
\\.\Scsi3:-0-1-0 HP HSV300 0952 5001-4380-025B-EA50 P5512G39SWL0K6 Ready Master
\\.\Scsi2:-0-0-0 HP HSV300 0952 5001-4380-025B-EA50 P5512G39SWL0M3 Ready Slave
\\.\Scsi3:-0-0-0 HP HSV300 0952 5001-4380-025B-EA50 P5512G39SWL0M3 Ready Slave
\\.\Scsi3:-0-2-0 HP HSV300 0952 5001-4380-025C-9920 P5512G39SWP049 Ready Master
\\.\Scsi2:-0-2-0 HP HSV300 0952 5001-4380-025C-9920 P5512G39SWP049 Ready Master
\\.\Scsi3:-0-3-0 HP HSV300 0952 5001-4380-025C-9920 P5512G39SWS0K9 Ready Slave
\\.\Scsi2:-0-3-0 HP HSV300 0952 5001-4380-025C-9920 P5512G39SWS0K9 Ready Slave

and after, when became badly :

C:\Program Files\Hewlett-Packard\Sanworks\Element Manager for StorageWorks HSV>cvutil paths
Status ................. done.

Path Vendor Product Firmware Node Serial SCMI
Master
WWN Number State
---------------- ------ ------- -------- ------------------- -------------- -------------------- -------
\\.\Scsi2:-0-1-0 HP HSV300 0952 5001-4380-025B-EA50 P5512G39SWL0K6 Ready Master
\\.\Scsi3:-0-1-0 HP HSV300 0952 5001-4380-025B-EA50 P5512G39SWL0K6 Ready Master
\\.\Scsi2:-0-0-0 HP HSV300 0952 5001-4380-025B-EA50 P5512G39SWL0M3 Ready Slave
\\.\Scsi3:-0-0-0 HP HSV300 0952 5001-4380-025B-EA50 P5512G39SWL0M3 Ready Slave
\\.\Scsi2:-0-2-0 HP HSV300 0952 5001-4380-025C-9920 P5512G39SWP049 Not valid ---
\\.\Scsi3:-0-2-0 HP HSV300 0952 5001-4380-025C-9920 P5512G39SWP049 Not valid ---
\\.\Scsi2:-0-3-0 HP HSV300 0952 5001-4380-025C-9920 P5512G39SWS0K9 non-responsive retry Unknown
\\.\Scsi3:-0-3-0 HP HSV300 0952 5001-4380-025C-9920 P5512G39SWS0K9 Not valid ---


until no paths found !!!