misc/167575: mfiutil(8) claims battery is OK even though it is worn out and wb cache is disabled

[Ed Maste]

>Number:         167575
>Category:       misc
>Synopsis:       mfiutil(8) claims battery is OK even though it is worn out and wb cache is disabled
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Fri May 04 13:40:10 UTC 2012
>Closed-Date:
>Last-Modified:
>Originator:     Ed Maste
>Release:        FreeBSD 8.2
>Organization:
Sandvine Inc
>Environment:
FreeBSD TPC-F3-25.phaedrus.sandvine.com 8.82.0109-RELEASE-p5 FreeBSD 8.82.0109-RELEASE-p5 #111: Tue Feb 28 15:27:17 EST 2012     root at wtllab-bsdbuild-9.phaedrus.sandvine.com:/usr/obj/usr/src/sys/SPB  amd64

(FreeBSD 8.2 + some backports)
>Description:
mfiutil reports that the cache is disabled:

$ sudo mfiutil cache 0
mfi0 volume mfid0 cache settings:
             I/O caching: writes
           write caching: write-back
write cache with bad BBU: disabled
              read ahead: none
       drive write cache: disabled
Cache Disabled Due to Dead Battery

But the battery reports "Status: normal"

$ sudo mfiutil show battery
mfi0: Battery State:
     Manufacture Date: 12/4/2010
        Serial Number: 1499
         Manufacturer: LS1191002A
                Model: 3150302
            Chemistry: LION
      Design Capacity: 1215 mAh
 Full Charge Capacity: 504 mAh
     Current Capacity: 479 mAh
        Charge Cycles: 35
       Current Charge: 95%
       Design Voltage: 3700 mV
      Current Voltage: 4050 mV
          Temperature: 28 C
               Status: normal

$ mfiutil version
mfiutil version 1.0.13

Using LSI's megacli reports additional information, including a "battery replacement required" indication

$ sudo ~emaste/lsi/megacli/8.00.46/MegaCli64 -AdpBbuCmd -GetBbuStatus -aALL
                                     
BBU status for Adapter: 0

BatteryType: iBBU
Voltage: 4050 mV
Current: 0 mA
Temperature: 28 C

BBU Firmware Status:

  Charging Status              : None
  Voltage                                 : OK
  Temperature                             : OK
  Learn Cycle Requested                   : No
  Learn Cycle Active                      : No
  Learn Cycle Status                      : OK
  Learn Cycle Timeout                     : No
  I2c Errors Detected                     : No
  Battery Pack Missing                    : No
  Battery Replacement required            : Yes
  Remaining Capacity Low                  : Yes
  Periodic Learn Required                 : No
  Transparent Learn                       : No
  No space to cache offload               : No
  Pack is about to fail & should be replaced : No
  Cache Offload premium feature required  : No
  Module microcode update required        : No

Battery state: 

GasGuageStatus:
  Fully Discharged        : No
  Fully Charged           : Yes
  Discharging             : Yes
  Initialized             : Yes
  Remaining Time Alarm    : No
  Remaining Capacity Alarm: No
  Discharge Terminated    : No
  Over Temperature        : No
  Charging Terminated     : No
  Over Charged            : No

Relative State of Charge: 95 %
Charger System State: 49168
Charger System Ctrl: 0
Charging current: 0 mA
Absolute state of charge: 39 %
Max Error: 2 %

Exit Code: 0x00

>How-To-Repeat:
Per description
>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: