Performance Degrade

[email protected]
Newsgroups gmane.linux.utilities.smartmontools
Message-ID <[email protected]>

Respected Sir

We have on nexenta CE which have around 14 SSD Drives (Corsair Neutron GTX 480 GB )  drives attached to a supermicro system with 64 GB RAM

14 disk is configured as RAID10 in nexenta of total 3TB and this 3TB Lun is assingn to a Redhat Virtulization (Virtual Machine) as direct lun/passthrough  to the virtual machine and the virtual machine is having 96GB Ram assigned to it and running ORACLE database 

Now about 6 month the nexenta storage performs well after this much period over storage performance get degraded/deteriorating  

Now our problem is the SSD Drives what we have connected to nexenta storage does not have smartmon database to check the SSD_Life_Left attribute

so we have run the smart command on some drives to identified that is their any problem with the drives so we get the following below output 

smartctl 5.42 2011-10-20 r3458 [i386-pc-solaris2.11] (local build)
Copyright (C) 2002-11 by Bruce Allen, http://smartmontools.sourceforge.net

=== START OF INFORMATION SECTION ===
Device Model:     Corsair Neutron GTX SSD
Serial Number:    12517924000021010190
Firmware Version: M206
User Capacity:    480,103,981,056 bytes [480 GB]
Sector Size:      512 bytes logical/physical
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:    Tue May 20 16:32:10 2014 IST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled

=== START OF READ SMART DATA SECTION ===
SMART STATUS RETURN: incomplete response, ATA output registers missing
SMART overall-health self-assessment test result: PASSED
Warning: This result is based on an Attribute check.

General SMART Values:
Offline data collection status:  (0x00)	Offline data collection activity
					was never started.
					Auto Offline Data Collection: Disabled.
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: 		(    0) seconds.
Offline data collection
capabilities: 			 (0x1d) SMART execute Offline immediate.
					No Auto Offline data collection support.
					Abort Offline collection upon new
					command.
					Offline surface scan supported.
					Self-test supported.
					No Conveyance Self-test supported.
					No Selective Self-test supported.
SMART capabilities:            (0x0002)	Does not save SMART data before
					entering power-saving mode.
					Supports SMART auto save timer.
Error logging capability:        (0x01)	Error logging supported.
					No General Purpose Logging support.
Short self-test routine 
recommended polling time: 	 (   1) minutes.
Extended self-test routine
recommended polling time: 	 (   5) minutes.

SMART Attributes Data Structure revision number: 0
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
  1 Raw_Read_Error_Rate     0x002e   166   166   006    Old_age   Always       -       0
  5 Reallocated_Sector_Ct   0x0032   100   100   036    Old_age   Always       -       1
  9 Power_On_Hours          0x0032   088   088   000    Old_age   Always       -       10869
 12 Power_Cycle_Count       0x0032   100   100   020    Old_age   Always       -       36
171 Unknown_Attribute       0x0032   100   100   000    Old_age   Always       -       4
172 Unknown_Attribute       0x0032   253   253   000    Old_age   Always       -       0
181 Program_Fail_Cnt_Total  0x0032   100   100   000    Old_age   Always       -       4
182 Erase_Fail_Count_Total  0x0032   253   253   000    Old_age   Always       -       0
194 Temperature_Celsius     0x0002   028   000   000    Old_age   Always       -       28 (Min/Max 22/34)
201 Soft_Read_Error_Rate    0x0032   100   100   000    Old_age   Always       -       0
204 Soft_ECC_Correction     0x0032   100   100   000    Old_age   Always       -       0
231 Temperature_Celsius     0x0032   092   092   000    Old_age   Always       -       9
234 Unknown_Attribute       0x0032   100   100   000    Old_age   Always       -       76126
241 Total_LBAs_Written      0x0032   100   100   000    Old_age   Always       -       95735
242 Total_LBAs_Read         0x0032   100   100   000    Old_age   Always       -       31158
250 Read_Error_Retry_Rate   0x0032   100   100   000    Old_age   Always       -       1202

SMART Error Log Version: 1
ATA Error Count: 15 (device log contains only the most recent five errors)
	CR = Command Register [HEX]
	FR = Features Register [HEX]
	SC = Sector Count Register [HEX]
	SN = Sector Number Register [HEX]
	CL = Cylinder Low Register [HEX]
	CH = Cylinder High Register [HEX]
	DH = Device/Head Register [HEX]
	DC = Device Command Register [HEX]
	ER = Error register [HEX]
	ST = Status register [HEX]
Powered_Up_Time is measured from power on, and printed as
DDd+hh:mm:SS.sss where DD=days, hh=hours, mm=minutes,
SS=sec, and sss=millisec. It "wraps" after 49.710 days.

Error 15 occurred at disk power-on lifetime: 10869 hours (452 days + 21 hours)
  When the command that caused the error occurred, the device was in an unknown state.

  After command completion occurred, registers were:
  ER ST SC SN CL CH DH
  -- -- -- -- -- -- --
  10 51 ff 00 4f c2 e0  Error: IDNF

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  b0 d5 01 06 4f c2 00 00  31d+07:42:11.824  SMART READ LOG
  b0 d5 01 01 4f c2 00 00  31d+07:42:11.824  SMART READ LOG
  b0 da 00 00 4f c2 00 00  31d+07:42:11.824  SMART RETURN STATUS
  b0 d1 01 01 4f c2 00 00  31d+07:42:11.824  SMART READ ATTRIBUTE THRESHOLDS [OBS-4]
  b0 d0 01 00 4f c2 00 00  31d+07:42:11.814  SMART READ DATA

Error 14 occurred at disk power-on lifetime: 10868 hours (452 days + 20 hours)
  When the command that caused the error occurred, the device was in an unknown state.

  After command completion occurred, registers were:
  ER ST SC SN CL CH DH
  -- -- -- -- -- -- --
  10 51 ff 00 4f c2 e0  Error: IDNF

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  b0 d5 01 06 4f c2 00 00  31d+07:27:29.834  SMART READ LOG
  b0 d5 01 01 4f c2 00 00  31d+07:27:29.824  SMART READ LOG
  b0 da 00 00 4f c2 00 00  31d+07:27:29.824  SMART RETURN STATUS
  b0 d1 01 01 4f c2 00 00  31d+07:27:29.824  SMART READ ATTRIBUTE THRESHOLDS [OBS-4]
  b0 d0 01 00 4f c2 00 00  31d+07:27:29.824  SMART READ DATA

Error 13 occurred at disk power-on lifetime: 10868 hours (452 days + 20 hours)
  When the command that caused the error occurred, the device was in an unknown state.

  After command completion occurred, registers were:
  ER ST SC SN CL CH DH
  -- -- -- -- -- -- --
  10 51 ff 00 4f c2 e0  Error: IDNF

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  b0 d5 01 06 4f c2 00 00  31d+07:26:46.114  SMART READ LOG
  b0 d5 01 01 4f c2 00 00  31d+07:26:46.114  SMART READ LOG
  b0 da 00 00 4f c2 00 00  31d+07:26:46.114  SMART RETURN STATUS
  b0 d1 01 01 4f c2 00 00  31d+07:26:46.114  SMART READ ATTRIBUTE THRESHOLDS [OBS-4]
  b0 d0 01 00 4f c2 00 00  31d+07:26:46.114  SMART READ DATA

Error 12 occurred at disk power-on lifetime: 10868 hours (452 days + 20 hours)
  When the command that caused the error occurred, the device was in an unknown state.

  After command completion occurred, registers were:
  ER ST SC SN CL CH DH
  -- -- -- -- -- -- --
  10 51 ff 00 4f c2 e0  Error: IDNF

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  b0 d5 01 06 4f c2 00 00  31d+07:25:17.604  SMART READ LOG
  b0 d5 01 01 4f c2 00 00  31d+07:25:17.604  SMART READ LOG
  b0 da 00 00 4f c2 00 00  31d+07:25:17.604  SMART RETURN STATUS
  b0 d1 01 01 4f c2 00 00  31d+07:25:17.604  SMART READ ATTRIBUTE THRESHOLDS [OBS-4]
  b0 d0 01 00 4f c2 00 00  31d+07:25:17.594  SMART READ DATA

Error 11 occurred at disk power-on lifetime: 10868 hours (452 days + 20 hours)
  When the command that caused the error occurred, the device was in an unknown state.

  After command completion occurred, registers were:
  ER ST SC SN CL CH DH
  -- -- -- -- -- -- --
  10 51 ff 00 4f c2 e0  Error: IDNF

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  b0 d5 01 06 4f c2 00 00  31d+07:23:07.424  SMART READ LOG
  b0 d5 01 01 4f c2 00 00  31d+07:23:07.424  SMART READ LOG
  b0 da 00 00 4f c2 00 00  31d+07:23:07.414  SMART RETURN STATUS
  b0 d1 01 01 4f c2 00 00  31d+07:23:07.414  SMART READ ATTRIBUTE THRESHOLDS [OBS-4]
  b0 d0 01 00 4f c2 00 00  31d+07:23:07.404  SMART READ DATA

SMART Self-test log structure revision number 0
Warning: ATA Specification requires self-test log structure revision number = 1
No self-tests have been logged.  [To run self-tests, use: smartctl -t]


Device does not support Selective Self Tests/Logging

###########################################

Now the following below attribute 

250 Read_Error_Retry_Rate   0x0032   100   100   000    Old_age   Always       -       1202 

show that is has 1202 error while reading 

so i need to know whether is their any problem with the ssd drives 

Please give any suggestion by seeing the above output 

Regards,

---

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