[Solved]disk DSBL, ok after rebuild, happened multiple times

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unRAID Version: 4.7


For the 2nd time yesterday one of my disks had the red ball and was marked as disabled. checking the syslog I saw that a write failed. The first time it happened a few weeks ago, I checked all connections and re-added the same drive and rebuilt parity. Checking smart values everything looked ok. Working great since then, now I have the same problem. The problem seem to relate to the install of a SuperMicro AOC-SASLP-MV8 to add more drives. Currently I have 4 drives connected to this controller but both times it was the same drive, drive 7.


In the syslog I see some weird stuff, that I cant really identify. It looks like the SuperMicro has a problem, but why only every few weeks? Ps: I replaced the serial ATA breakout cable with a new one already.


Additional hardware info:

Mobo: ASUS M4A78T-M


CPU: AMD Sempron 140

Memory: 8GB Kingston ValueRAM DDR3 133 (PC3 10600)

9 2T drives plus 1 spare online, plus 160GB cache drive


any help appreciated, rebuilt currently in progress and array is up :)


Moderator edit: marked [solved]


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yes, rebuilding finishes without a problem and now all drives are green and happy again.


Here is the smart report of the drive


smartctl -a -d ata /dev/sdc
smartctl 5.39.1 2010-01-28 r3054 [i486-slackware-linux-gnu] (local build)
Copyright (C) 2002-10 by Bruce Allen, http://smartmontools.sourceforge.net

Device Model:     WDC WD20EARS-00MVWB0
Serial Number:    WD-WMAZA1098786
Firmware Version: 51.0AB51
User Capacity:    2,000,398,934,016 bytes
Device is:        Not in smartctl database [for details use: -P showall]
ATA Version is:   8
ATA Standard is:  Exact ATA specification draft version not indicated
Local Time is:    Wed Jan 25 19:19:04 2012 PST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled

SMART overall-health self-assessment test result: PASSED

General SMART Values:
Offline data collection status:  (0x84)	Offline data collection activity
				was suspended by an interrupting command from host.
				Auto Offline Data Collection: Enabled.
Self-test execution status:      (   0)	The previous self-test routine completed
				without error or no self-test has ever 
				been run.
Total time to complete Offline 
data collection: 		 (36960) seconds.
Offline data collection
capabilities: 			 (0x7b) SMART execute Offline immediate.
				Auto Offline data collection on/off support.
				Suspend Offline collection upon new
				Offline surface scan supported.
				Self-test supported.
				Conveyance Self-test supported.
				Selective Self-test supported.
SMART capabilities:            (0x0003)	Saves SMART data before entering
				power-saving mode.
				Supports SMART auto save timer.
Error logging capability:        (0x01)	Error logging supported.
				General Purpose Logging supported.
Short self-test routine 
recommended polling time: 	 (   2) minutes.
Extended self-test routine
recommended polling time: 	 ( 255) minutes.
Conveyance self-test routine
recommended polling time: 	 (   5) minutes.
SCT capabilities: 	       (0x3035)	SCT Status supported.
				SCT Feature Control supported.
				SCT Data Table supported.

SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
  1 Raw_Read_Error_Rate     0x002f   200   200   051    Pre-fail  Always       -       0
  3 Spin_Up_Time            0x0027   166   165   021    Pre-fail  Always       -       6675
  4 Start_Stop_Count        0x0032   100   100   000    Old_age   Always       -       345
  5 Reallocated_Sector_Ct   0x0033   200   200   140    Pre-fail  Always       -       0
  7 Seek_Error_Rate         0x002e   200   200   000    Old_age   Always       -       0
  9 Power_On_Hours          0x0032   096   096   000    Old_age   Always       -       2922
10 Spin_Retry_Count        0x0032   100   100   000    Old_age   Always       -       0
11 Calibration_Retry_Count 0x0032   100   100   000    Old_age   Always       -       0
12 Power_Cycle_Count       0x0032   100   100   000    Old_age   Always       -       133
192 Power-Off_Retract_Count 0x0032   200   200   000    Old_age   Always       -       123
193 Load_Cycle_Count        0x0032   193   193   000    Old_age   Always       -       22216
194 Temperature_Celsius     0x0022   120   110   000    Old_age   Always       -       30
196 Reallocated_Event_Count 0x0032   200   200   000    Old_age   Always       -       0
197 Current_Pending_Sector  0x0032   200   200   000    Old_age   Always       -       0
198 Offline_Uncorrectable   0x0030   200   200   000    Old_age   Offline      -       0
199 UDMA_CRC_Error_Count    0x0032   200   200   000    Old_age   Always       -       0
200 Multi_Zone_Error_Rate   0x0008   200   200   000    Old_age   Offline      -       0

SMART Error Log Version: 1
No Errors Logged

SMART Self-test log structure revision number 1
Num  Test_Description    Status                  Remaining  LifeTime(hours)  LBA_of_first_error
# 1  Extended offline    Completed without error       00%      1393         -
# 2  Short offline       Completed without error       00%      1387         -

SMART Selective self-test log data structure revision number 1
    1        0        0  Not_testing
    2        0        0  Not_testing
    3        0        0  Not_testing
    4        0        0  Not_testing
    5        0        0  Not_testing
Selective self-test flags (0x0):
  After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute delay.


I thought about the PSU. But with no problems whatsoever during multiple parity checks and this rebuilt, it doesn't seem probable. MyMain - smart view doesnt show anything except green.


Update: just tried spinning up and down all drives while writing a large file to the disk to see if there is any impact, but no problem


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and it happened again ... :( I guess I am going to try a bigger PSU. Maybe with the additional card, drives and memory 400W isnt simply sufficient. I see the seasonics get good reviews. would a SeaSonic X Series X650 Gold be sufficient and work with my Mobo: ASUS M4A78T-M in a cooler master centurion 590?

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  • 1 year later...

noticed, that I never resolved this topic. So, better late than never: I'm happy to report, that the new PSU: SeaSonic X Series X650 Gold did the trick. No problem since! :)



ps: strangely I can't modify the original post. no 'modify' option. Obviously I could change this reply but not the orig. So mods fell free to add [solved] to the title. cheers


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