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Script crashes if first VD is not zero.

# python megaclisas-status.py
Traceback (most recent call last):
  File "megaclisas-status.py", line 295, in <module>
    data, good_arrays, bad_arrays, good_disks, bad_disks = get_raid_status()
  File "megaclisas-status.py", line 237, in get_raid_status
    array_details = get_array_info(controller_id, array_id)
  File "megaclisas-status.py", line 144, in get_array_info
    return (_id, raid_type, size, state, in_progress, cachecade_info)
UnboundLocalError: local variable 'raid_type' referenced before assignment

The initial cause is that get_array_info doesn't handle errors. Underlying that is the assumption that the LDs will run sequentially from 0 to ((megacli -LdGetNum -aN) - 1). On my controller the first two LDs were removed so the count runs from 2 to ((megacli -LdGetNum -aN) + 1).

# megacli -LdGetNum -a0

 Number of Virtual Drives Configured on Adapter 0: 11

Exit Code: 0x0b

# megacli -LDInfo -l0 -a0


Adapter 0 -- Virtual Drive Information:
Adapter 0: Virtual Drive 0 Does not Exist.

Exit Code: 0x01

# megacli -LDInfo -Lall -aAll -NoLog|grep 'Virtual Drive:'
Virtual Drive: 2 (Target Id: 2)
Virtual Drive: 3 (Target Id: 3)
Virtual Drive: 4 (Target Id: 4)
Virtual Drive: 5 (Target Id: 5)
Virtual Drive: 6 (Target Id: 6)
Virtual Drive: 7 (Target Id: 7)
Virtual Drive: 8 (Target Id: 8)
Virtual Drive: 9 (Target Id: 9)
Virtual Drive: 10 (Target Id: 10)
Virtual Drive: 11 (Target Id: 11)
Virtual Drive: 12 (Target Id: 12)

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