incorrect drive bay number reported on failed physical drives on a DL380 G7 server

[ashrafhasson]

A ProLiant DL380 G7 with 2 failing SAS HDDs in bay 4 and 5 show like this in check_hpasm:

CRITICAL - physical drive 0:3 is failed, physical drive 0:4 is failed, da controller 0 in slot 0 needs attention, logical drive 0:1 is recovering, System: 'proliant dl380 g7', S/N: ..., ROM: 'P67 05/05/2011'

It seems that the drive index is shifted by 1?

$ /usr/lib/nagios/plugins/check_hpasm -V
check_hpasm 4.6.3.1 [http://labs.consol.de/nagios/check_hpasm]

$ hpacucli controller check:
=> controller all show

  Smart Array P212 in Slot 2                (sn: <ABC>)
  Smart Array P410i in Slot 0 (Embedded)    (sn: <EFG>)

=> controller sn= show

  Smart Array P410i in Slot 0 (Embedded)

    Bus Interface: PCI
    Slot: 0
    Serial Number: <EFG>
    Cache Serial Number: ...
    RAID 6 (ADG) Status: Disabled
    Controller Status: OK
    Hardware Revision: C
    Firmware Version: 3.66
    Rebuild Priority: Medium
    Expand Priority: Medium
    Surface Scan Delay: 3 secs
    Surface Scan Mode: Idle
    Queue Depth: Automatic
    Monitor and Performance Delay: 60  min
    Elevator Sort: Enabled
    Degraded Performance Optimization: Disabled
    Inconsistency Repair Policy: Disabled
    Wait for Cache Room: Disabled
    Surface Analysis Inconsistency Notification: Disabled                                                                                                                                              
    Post Prompt Timeout: 15 secs                                                                                                                                                                       
    Cache Board Present: True                                                                                                                                                                          
    Cache Status: OK                                                                                                                                                                                   
    Cache Ratio: 25% Read / 75% Write                                                                                                                                                                  
    Drive Write Cache: Disabled                                                                                                                                                                        
    Total Cache Size: 1024 MB                                                                                                                                                                          
    Total Cache Memory Available: 912 MB                                                                                                                                                               
    No-Battery Write Cache: Disabled                                                                                                                                                                   
    Cache Backup Power Source: Capacitors                                                                                                                                                              
    Battery/Capacitor Count: 1                                                                                                                                                                         
    Battery/Capacitor Status: OK                                                                                                                                                                       
    SATA NCQ Supported: True                                                                                                                                                                           

=> controller sn= physicaldrive all show

  Smart Array P410i in Slot 0 (Embedded)                                                                                                                                                               

     array A

        physicaldrive 1I:1:1 (port 1I:box 1:bay 1, SAS, 300 GB, OK)
        physicaldrive 1I:1:2 (port 1I:box 1:bay 2, SAS, 300 GB, OK)
        physicaldrive 1I:1:3 (port 1I:box 1:bay 3, SAS, 300 GB, OK)
        physicaldrive 1I:1:4 (port 1I:box 1:bay 4, SAS, 300 GB, Failed)
        physicaldrive 2I:1:5 (port 2I:box 1:bay 5, SAS, 300 GB, Failed)
        physicaldrive 2I:1:6 (port 2I:box 1:bay 6, SAS, 300 GB, OK)
        physicaldrive 2I:1:7 (port 2I:box 1:bay 7, SAS, 300 GB, OK)
        physicaldrive 2I:1:8 (port 2I:box 1:bay 8, SAS, 300 GB, OK, active spare)