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                            FIELD INFORMATION NOTICE
                  (For Authorized Distribution by SunService)

FIN #: I0865-1

Create Date: Aug/27/02

Keywords: 

Physical device paths for disks in StorEdge A1000/A3x00/A3500FC arrays are incorrectly included in the output of 'format'

SunAlert: No

Top FIN/FCO Report: No

Products Reference: Physical Device Path on A1000/A3x00/A3500FC

Product Category: Storage / Service

Product Affected: 

Systems Affected:
-----------------  
Mkt_ID   Platform   Model   Description                   Serial Number
------   --------   -----   -----------                   -------------
  -       ANYSYS      -     System Platform Independent         -


X-Options Affected:
-------------------
Mkt_ID   Platform   Model   Description               Serial Number
------   --------   -----   -----------               -------------
  -      A1000      ALL     A1000 Storage Array             -
  -      A3000      ALL     A3000 Storage Array             -
  -      A3500      ALL     A3500 Storage Array             -
  -      A3500FC    ALL     A3500FC Storage Array           -

Parts Affected: 

Part Number      Description                            Model
-----------      -----------                            -----
704-6708-10      CD SUN STOREDGE RAID Manager6.22         -
704-7937-05      CD RM 6.22.1                             -

References: 

BugId: 4243870 - MCR/Add 3 A1000s, req for 00:00 21-Nov-99.
       4587657 - Physical device paths show up after a power cycle of the 
                 RAID Module.
       4587794 - physical device paths show up in format for second sonoma 
                 before running hotadd.
       4488911 - RDAC physical paths are seen after a reboot or "cfgadm -c 
                 configure" w/mpxio.
       4492343 - RM6.22.1: physical paths are created after controller 
                 failover/failback w/mpxio.
       4493133 - RM6.22x: after hot_add, controller failover/back, devices 
                 get bad links.
       4516766 - Enabling mpxio delays device enumeration so rdac doesn't 
                 see all LUNs.

Issue Description: 

Disks in StorEdge A1000/A3x00/A3500FC arrays may sometimes be shown as
having physical device paths in addition to pseudo device paths with
the 'format' utility.  Although the disks and arrays will continue to
function normally, this issue may cause confusion for system
administrators and support personnel.

This issue applies to any system type with StorEdge A1000/A3x00/A3500FC
arrays with Raid Manager 6.22 or 6.22.1 installed.

Use the following commands to determine if the affected version of Raid
Manager software is installed:
     
   # pkginfo -l SUNWosar

     VERSION: 06.22, REV=01.14  <--- 6.22
       
   OR
     
   # pkginfo -l SUNWosar
   
     VERSION:  06.22,REV=01.54  <--- 6.22.1
                                 
Normally, only pseduo device paths for an A1000/A3x00/A3500FC array
will show from the format utility as follows:
    
   # format

     Searching for disks...done

AVAILABLE DISK SELECTIONS:
       0. c0t0d0 
          /pci@1f,4000/scsi@3/sd@0,0
       1. c5t5d0 
          /pseudo/rdnexus@5/rdriver@5,0
       2. c6t4d1 
          /pseudo/rdnexus@6/rdriver@4,1 
         
However, in some cases, physical device paths will display in addition to the
pseudo device paths:
       
   # format

     Searching for disks...done
 
AVAILABLE DISK SELECTIONS:
       0. c0t0d0 
          /pci@1f,4000/scsi@3/sd@0,0 
       1. c5t5d0 
          /pseudo/rdnexus@5/rdriver@5,0
       2. c6t4d1 
          /pseudo/rdnexus@6/rdriver@4,1
       3. c7t5d0 
          /pci@4,2000/SUNW,qlc@1/fp@0,0/ssd@w201700a0b806bdb9,0
       4. c7t5d1 
          /pci@4,2000/SUNW,qlc@1/fp@0,0/ssd@w201700a0b806bdb9,1
       5. c8t4d0 
          /pci@4,4000/SUNW,qlc@4/fp@0,0/ssd@w201600a0b806bdb9,0
       6. c8t4d1 
          /pci@4,4000/SUNW,qlc@4/fp@0,0/ssd@w201600a0b806bdb9,1  
          
    
Devices c7* and c8* now exist when they did not exist before.          
     
There are seven RM6.22/RM6.22.1 bugs reported to have the same type 
of failure.  Please see the bugs for details.   
     
     Bug 4243870  A3x00 - new devices show up in format that should not
                  whenever disks(1m) run
     Bug 4587657  Physical device paths show up after a power cycle of the 
                  RAID Module.
     Bug 4587794  Physical device paths show up in format for second sonoma
                  before running hotadd.
     Bug 4488911  RDAC physical paths are seen after a reboot or "cfgadm -c 
                  configure" w/mpxio.
     Bug 4492343  RM6.22.1: physical paths are created after controller 
                  failover/failback w/mpxio.
     Bug 4493133  RM6.22x: after hot_add, controller failover/back, devices
                  get bad links.
     Bug 4516766  Enabling mpxio delays device enumeration so rdac doesn't
                  see all LUNs. 
     
This problem occurs due to insufficient coordination between the
Redundant Disk Array Controller (RDAC), the sd/ssd driver and the
devfsadmd daemon.  The problem was identified but the proposed fix was
never released because fatal design issues were discovered by the
Solaris I/O group.  See bugID 4243870 to obtain a more detailed root
cause.

There is no permanent fix for this issue, but there is a simple
workaround.  See below.

Implementation: 

---
        |   |   MANDATORY (Fully Proactive)
         ---    
         
  
         ---
        |   |   CONTROLLED PROACTIVE (per Sun Geo Plan) 
         --- 
         
                                
         ---
        | X |   REACTIVE (As Required)
         ---

Corrective Action: 

The following recommendation is provided as a guideline for authorized
Sun Services Field Representatives who may encounter the above
mentioned problem.

If physical device paths appear in the output of 'format', run the 
RAID Manager 6 'hot_add' command as shown below.

   # /usr/lib/osa/bin/hot_add

'hot_add' will clear the physical device paths and 'format' will only 
show the pseduo device paths.

Comments: 

None.

============================================================================

Implementation Footnote: 

i)   In case of MANDATORY FINs, Enterprise Services will attempt to    
     contact all affected customers to recommend implementation of 
     the FIN. 
   
ii)  For CONTROLLED PROACTIVE FINs, Enterprise Services mission critical    
     support teams will recommend implementation of the FIN  (to their  
     respective accounts), at the convenience of the customer. 

iii) For REACTIVE FINs, Enterprise Services will implement the FIN as the   
     need arises.
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