[kshow]

I have several AIX 5.3 TL5 SP1 systems connected to Hitachi 9980 and Hitachi 9990 storage units connected via SAN and am using the ODM drivers:

devices.fcp.disk.Hitachi.array.mpio.rte 5.4.0.0 C F AIX MPIO Support for Hitachi

When additional LUNs are zoned and I run cfgmgr to detect the changes, I receive the following errors:

Method error (/usr/lib/methods/cfgefscsi -l fscsi0 ):
0514-061 Cannot find a child device.
Method error (/usr/lib/methods/cfgefscsi -l fscsi1 ):
0514-061 Cannot find a child device.]

lsdev -Ccdisk shows the 2 new hdisks representing the devices, but they are in a defined state
hdisk0 Available 08-08-00-3,0 16 Bit LVD SCSI Disk Drive
hdisk1 Available 08-08-00-4,0 16 Bit LVD SCSI Disk Drive
hdisk2 Available 08-08-00-5,0 16 Bit LVD SCSI Disk Drive
hdisk3 Available 08-08-00-8,0 16 Bit LVD SCSI Disk Drive
hdisk4 Available 04-08-02 Hitachi MPIO Disk 9900 (Fibre)
hdisk5 Available 04-08-02 Hitachi MPIO Disk 9900 (Fibre)
hdisk6 Defined 04-08-02 Hitachi MPIO Disk USP (Fibre)
hdisk7 Defined 04-08-02 Hitachi MPIO Disk USP (Fibre)

lspath also shows the devices as Defined:
Enabled hdisk0 scsi0
Enabled hdisk1 scsi0
Enabled hdisk2 scsi0
Enabled hdisk3 scsi0
Enabled hdisk4 fscsi0
Enabled hdisk5 fscsi0
Enabled hdisk4 fscsi1
Enabled hdisk5 fscsi1
Defined hdisk6 fscsi0
Defined hdisk7 fscsi0
Defined hdisk6 fscsi1

The only way to get the disks on line that I've found is to

1) varyoff all volumegroups on the affected storage
2) remove all hdisk devices up to and including the fcs0 and fcs1 parent devices
3) unistall the devices.fcp.disk.Hitachi.array.mpio.rte package
4) execute cfgmgr to see all devices again.
5) remove all hdisk devices again
6) reinstall devices.fcp.disk.Hitachi.array.mpio.rte
7) run cfgmgr

all devices then show up as Available and paths Enabled.
I checked with Hitachi to make sure I had their most recent mpio fileset and they confirmed I did. One caveat I've found is that if I were to reboot the box before running steps 1-7 above, ALL fibre channel connected devices would go to a Defined state when the system comes back up.

I also opened a PMR with IBM Software Support and they could find no issues other than the fact that they stated connecting a server with MPIO to multiple cabinets was not supported. (Is this true? If so, where can I find documentation confirming this?)

Has anyone else ran into this type of issue with MPIO?
Am I missing a step in detecting the new MPIO devices by only executing cfgmgr once the new devices are zoned to the server?

I have 12 other systems configured identical to this one that are exibiting the same behavior and the repair steps above are the only thing I've found that works.

Thanks in advance for you assistance!

[kshow]

Problem resolved.

The following entries needed to be added to the PdPathAt ODM.

PdPathAt:
uniquetype = "disk/fcp/htcuspmpio"
attribute = "scsi_id"
deflt = ""
values = ""
generic = "D"
rep = "s"
nls_index = 80

PdPathAt:
uniquetype = "disk/fcp/htcuspmpio"
attribute = "node_name"
deflt = ""
values = ""
generic = "D"
rep = "s"
nls_index = 94

[drax]

Thanks for the update on how this was resolved kshow. I've encountered the same problem after an upgrade from 5200-07-00 to 5300-05-06. I have version 5.4.0.1 of devices.fcp.disk.Hitachi.array.mpio.rte installed.

For some reason during the upgrade the PdPathAt attributes disappeared.

IBM and HDS have been very helpful and I'm about to try re-inserting the odm entries manually now too.

[drax]

Here's the breakdown of the problem:
> cfgmgr
Method error (/usr/lib/methods/cfgscsidisk -l hdisk20 ):
0514-023 The specified device does not exist in the
customized device configuration database.

> lsdev -Ccdisk | grep hdisk20
hdisk20 Defined 41-08-02 Hitachi MPIO Disk USP (Fibre)

> lspath | grep hdisk20
Defined hdisk20 fscsi0
Defined hdisk20 fscsi0
Defined hdisk20 fscsi1

Here's how it was resolved in our environment (caution, you should probably obtain your own PdPathAt.out data specific to your env).

> rmdev -l hdisk20 -d
hdisk20 deleted

> cat PdPathAt.out

PdPathAt:
uniquetype = "disk/fcp/htcuspmpio"
attribute = "scsi_id"
deflt = ""
values = ""
generic = "D"
rep = "s"
nls_index = 80

PdPathAt:
uniquetype = "disk/fcp/htcuspmpio"
attribute = "node_name"
deflt = ""
values = ""
generic = "D"
rep = "s"
nls_index = 94

> odmadd < PdPathAt.out
> odmget -q"uniquetype='disk/fcp/htcuspmpio'" PdPathAt

PdPathAt:
uniquetype = "disk/fcp/htcuspmpio"
attribute = "scsi_id"
deflt = ""
values = ""
generic = "D"
rep = "s"
nls_index = 80

PdPathAt:
uniquetype = "disk/fcp/htcuspmpio"
attribute = "node_name"
deflt = ""
values = ""
generic = "D"
rep = "s"
nls_index = 94

> cfgmgr
> lsdev -Ccdisk | grep hdisk20
hdisk20 Available 41-08-02 Hitachi MPIO Disk USP (Fibre)

> lspath | grep hdisk20
Enabled hdisk20 fscsi0
Enabled hdisk20 fscsi0
Enabled hdisk20 fscsi1
Enabled hdisk20 fscsi1

> savebase