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Full Discussion: NPIV mapping problem
Operating Systems AIX NPIV mapping problem Post 302600821 by johnf on Wednesday 22nd of February 2012 06:44:52 AM
Old 02-22-2012
NPIV mapping problem
Hello all I hope someone can help me with this. I have a single LPAR which is supplied a rootvg and datavg disk set from a dual VIO server configuration. I see dual path disks for all the datavg disks but only see one path for the rootvg disks.

The client LPAR has the following:
Code:
fcs0   Available C2-T1 Virtual Fibre Channel Client Adapter
fcs1   Available C3-T1 Virtual Fibre Channel Client Adapter
fcs2   Available C4-T1 Virtual Fibre Channel Client Adapter
fcs3   Available C5-T1 Virtual Fibre Channel Client Adapter

But when lspath is run the following is returned:
Code:
Enabled hdisk4 fscsi1
Enabled hdisk5 fscsi1
Enabled hdisk6 fscsi1
Enabled hdisk2 fscsi2
Enabled hdisk0 fscsi2
Enabled hdisk4 fscsi3
Enabled hdisk5 fscsi3
Enabled hdisk6 fscsi3

As can be seen FCS0 (fscsi0) is missing. From the VIO server which is serving this adapter you have:
Code:
$ lsdev -type adapter | grep fcs
fcs0             Available   8Gb PCI Express Dual Port FC Adapter (df1000f114108a03)
fcs3             Available   8Gb PCI Express Dual Port FC Adapter (df1000f114108a03)]

When I run the map command I get the following:
Code:
$ lsmap -all -npiv
Name          Physloc                            ClntID ClntName       ClntOS
------------- ---------------------------------- ------ -------------- -------
vfchost0      U8202.E4B.06605EP-V3-C3                 2 LPAR        AIX

Status:LOGGED_IN
FC name:fcs0                    FC loc code:U78AA.001.WZSG75A-P1-C6-T1
Ports logged in:1
Flags:a<LOGGED_IN,STRIP_MERGE>
VFC client name:fcs0            VFC client DRC:U8202.E4B.06605EP-V2-C2-T1

Name          Physloc                            ClntID ClntName       ClntOS
------------- ---------------------------------- ------ -------------- -------
vfchost1      U8202.E4B.06605EP-V3-C4                 2 LPAR        AIX

Status:LOGGED_IN
FC name:fcs3                    FC loc code:U78AA.001.WZSG75A-P1-C6-T2
Ports logged in:2
Flags:a<LOGGED_IN,STRIP_MERGE>
VFC client name:fcs1            VFC client DRC:U8202.E4B.06605EP-V2-C3-T1

This is where it gets interesting on the offending vfchost it can be seen that only 1 port is logged in, whereas on the working port 2 are logged in.

I believe this is the problem but cannot find anything on a general internet trawl to answer why! I believe it is a SAN configuration problem but need evidence with which to beat up the SAN team!

I hope you can help
 

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LEARN ABOUT HPUX

hbaapi

hbaapi(3C)																hbaapi(3C)

NAME

       hbaapi - Fibre Channel Storage Network Industry Association Host Bus Adapter Application Programming Interface (FC SNIA HBA API)

DESCRIPTION

       The  Common  HBA  API  provides a consistent HBA standard interface for accessing information in a Fibre Channel Storage Area Network (SAN)
       that would be implemented across vendors as a standard 'C' API supported by vendor specific library instances.

       This API library is thread-safe, but threads should not be cancelled when execution is in the API.

       The following functions are available in the API for managing a Fibre Channel HBA.  This API would be exposed to upper  level  applications
       to control SAN functionality.

       Please refer to for details on structures used.

	    01.
	    02.
	    03.
	    04.
	    05.
	    06.
	    07.

	    08.
	    09.
	    10.
	    11.
	    12.

	    13.
	    14.
	    15.
	    16.
	    17.

	    18.
	    19.

	    FCP Information Functions require that the applications calling them
		  have an effective user id as that of the root user (euid = 0).

	    20.
	    21.
	    22.

	    SCSI Information Functions require that the applications calling them have an effective user id as that of the root user (euid = 0).

	    23.
	    24.

FILES

       Contains the related data structures and definitions as in

AUTHOR

       These APIs were developed by Hewlett-Packard Company.

SEE ALSO

       HBA_GetVersion(3C),  HBA_LoadLibrary(3C),  HBA_FreeLibrary(3C),	HBA_GetNumberOfAdapters(3C),  HBA_GetAdapterName(3C), HBA_OpenAdapter(3C),
       HBA_CloseAdapter(3C), HBA_GetAdapterAttributes(3C), HBA_GetAdapterPortAttributes(3C),  HBA_GetPortStatistics(3C),  HBA_GetDiscoveredPortAt-
       tributes(3C),  HBA_GetPortAttributesByWWN(3C),  HBA_SendCTPassThru(3C),	HBA_GetEventBuffer(3C),  HBA_SetRNIDMgmtInfo(3C), HBA_GetRNIDMgmt-
       Info(3C), HBA_SendRNID(3C), HBA_GetFcpTargetMapping(3C), HBA_GetFcpPersistentBinding(3C), HBA_SendScsiInquiry(3C),  HBA_SendReportLUNs(3C),
       HBA_SendReadCapacity(3C), HBA_RefreshInformation(3C), HBA_ResetStatistics(3C).

																	hbaapi(3C)
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