Re: recovering from lost hdiskpower devices

Bob.Kelley_at_BRINKSINC.COM
Date: 05/26/04

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Date:         Wed, 26 May 2004 10:59:33 -0500
To: aix-l@Princeton.EDU

UPDATE

I eventually got past the dead paths issue, but encountered the "no good
copies of the VGDA" error and could not mount any filesystems. I could
importvg the volume, lsfs showed the filesystems (sounds like a good VGDA
so far!!) but I couldnt mount anything, nor could I even run fsck. The
error was saying "...device open fail"

The problem seems to have disappeared after upgrading to 5.2 ML03.

Bobby Kelley Jr.
972-877-5341

|---------+---------------------------->
| | "Ralph R. Rye" |
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| | 05/22/2004 09:42 |
| | AM |
| | Please respond to|
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  | To: aix-l@Princeton.EDU |
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  | Subject: Re: recovering from lost hdiskpower devices |
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Bob,

You shouldn't keep getting the LUNZ devices. If you do a lsdev -C array
do you see a the following output:

sp0 Available CLARiiON SP CX600 Model

Also with the Clariion a lun is visible across both SP's. It is active on
one SP, and capable of failing over to the SP.

Do you have navicli installed? If so, run the following navicli commands
and post the output.

# navicli -h $IP OF YOUR SP$ port -list all

# navicli -h $IP OF YOUR SP$ storage -list

Ralph

                      Bob.Kelley@BRINKS
                      INC.COM To:
aix-l@Princeton.EDU
                      Sent by: IBM AIX cc:
                      Discussion List Subject: Re: recovering
from lost hdiskpower devices
                      <aix-l@Princeton.
                      EDU>

                      05/20/2004 10:29
                      PM
                      Please respond to
                      IBM AIX
                      Discussion List

Thanks for the reply Ralph, I hear ya on the LUNZ devices....the curious
thing is they continue to show up, even after I delete them and run cfgmgr

I'm not LB across the SPs and thanks for that info. Correct me if I'm
wrong, but I think each hba is only zoned for a single SP, they should both
see both SPs

Bobby Kelley Jr.
972-877-5341

  |
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  | To: aix-l@Princeton.EDU
|
  | cc:
|
  | Subject: Re: recovering from lost hdiskpower devices
|
>
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Bob,

Did you get your powerpath Clariion issue figured out?

In regards to the LUNZ devices that show up in your lsdev, go ahead and
delete them. They only show up when you first get zoned to the clariion
and have not yet been assigned a storage group.

Also did you know that you can not load balance across clariion SP's? From
you powermt output I noticed that you where connected to two different
SP's. Just wanted to make sure you where not trying to load balance...

Ralph

                      05/14/2004 09:43
                      AM
                      Please respond to
                      IBM AIX
                      Discussion List

Thanks Patrick, I came in this morning only to find my two fc paths dead.
Even after stopping/starting the agent, powermt config, and rebooting, they
only come back alive for about 10 minutes, then they go dead?

Bobby Kelley Jr.
972-877-5341

|---------+---------------------------->
| | "Patrick B. |
| | O'Brien" |
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| | GOV> |
| | Sent by: IBM AIX |
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| | 05/13/2004 05:16 |
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I would do a;

chdev -l hdiskpower0 -a pv=clear,
chdev -l hdiskpower0 -a pv=yes, to reinit your pvid, then
recreatevg -y vg_name hdiskpowername.

I just had to do this, this morning. This command will do importvg and a
varyonvg too.

-----Original Message-----
From: Bob.Kelley@BRINKSINC.COM [mailto:Bob.Kelley@BRINKSINC.COM]
Sent: Thursday, May 13, 2004 3:10 PM
To: aix-l@Princeton.EDU
Subject: recovering from lost hdiskpower devices

Anybody seen anything similiar to this or have any insight? Help much
appreciated on this!

After a 5.1->5.2 upgrade, I found that I cannot import the volume group
which resides on a CX600 LUN. I have flashed the fcX adapters with the
latest microcode, andh here are the EMC software versions:
PowerPath 3.0.4.0
NaviAgent 6.2.0.6
CLArray 5.2.0.7

This is the error I'm getting:
[root@nad0019aixd05/home/root]# importvg -y oraclevg hdiskpower0
0516-024 lqueryvg: Unable to open physical volume.
        Either PV was not configured or could not be opened. Run
        diagnostics.
0516-024 lqueryvg: Unable to open physical volume.
        Either PV was not configured or could not be opened. Run
        diagnostics.
0516-1140 importvg: Unable to read the volume group descriptor area
        on specified physical volume.

powermt display dev=all shows this:
Pseudo name=hdiskpower0
CLARiiON ID=APM00023800314
Logical device ID=600601F86D0A00007A865AF0B555D711
state=alive; policy=CLAROpt; priority=0; queued-IOs=0
Owner: default=SP A, current=SP B
==============================================================================

---------------- Host --------------- - Stor - -- I/O Path - -- Stats

---
### HW Path                 I/O Paths    Interf.   Mode    State  Q-IOs
Errors
==============================================================================
  0 fscsi0                    hdisk3     SP A3     active  alive      0
0
  1 fscsi1                    hdisk5     SP B3     active  alive      0
0
I also noticed something peculiar, I have the LUNZ devices showing up now:
hdisk0      Available 10-60-00-10,0 16 Bit LVD SCSI Disk Drive
hdisk1      Available 10-60-00-11,0 16 Bit LVD SCSI Disk Drive
hdisk2      Available 20-58-01      FC CLArray LUNZ Disk
hdisk3      Available 20-58-01      FC CLArray RAID 5 Disk Group
hdisk4      Available 20-60-01      FC CLArray LUNZ Disk
hdisk5      Available 20-60-01      FC CLArray RAID 5 Disk Group
hdiskpower0 Available 20-58-01      PowerPath Device
Bobby Kelley Jr.
972-877-5341
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Maybe in reply to: Bob.Kelley_at_BRINKSINC.COM: "recovering from lost hdiskpower devices"
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