On 21/02/2019 18.31, Felix Miata wrote: ...
# hdparm -tT /dev/sda /dev/sdb /dev/sdc
/dev/sda: Timing cached reads: 13988 MB in 2.00 seconds = 7010.44 MB/sec Timing buffered disk reads: 22 MB in 3.10 seconds = 7.09 MB/sec
This one does seem very slow, and it is not part of the raids. Maybe it is busy, something is using it heavily. SSD, you say?
/dev/sdb: Timing cached reads: 14114 MB in 2.00 seconds = 7074.17 MB/sec Timing buffered disk reads: 358 MB in 3.01 seconds = 118.77 MB/sec
This one is a trifle slow, compared to the other.
/dev/sdc: Timing cached reads: 14530 MB in 1.99 seconds = 7283.44 MB/sec Timing buffered disk reads: 406 MB in 3.02 seconds = 134.23 MB/sec # smartctl -t long /dev/sda ... Testing has begun. Please wait 30 minutes for test to complete. ... # smartctl -a /dev/sda smartctl 6.5 2016-05-07 r4318 [x86_64-linux-4.4.165-81-default] (SUSE RPM) Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION === Device Model: PNY CS900 120GB SSD Serial Number: PNY06182239150108A56 LU WWN Device Id: 5 f8db4c 061808a56 Firmware Version: CS900612 User Capacity: 120,034,123,776 bytes [120 GB] Sector Size: 512 bytes logical/physical Rotation Rate: Solid State Device Form Factor: 2.5 inches Device is: Not in smartctl database [for details use: -P showall] ATA Version is: Unknown(0x0ff8) (minor revision not indicated) SATA Version is: SATA 3.2, 6.0 Gb/s (current: 6.0 Gb/s) Local Time is: Thu Feb 21 12:12:21 2019 EST SMART support is: Available - device has SMART capability. SMART support is: Enabled
Does not say it is SSD, and has few fields. ...
SMART Attributes Data Structure revision number: 16 Vendor Specific SMART Attributes with Thresholds: ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE 1 Raw_Read_Error_Rate 0x000b 100 100 050 Pre-fail Always - 0 9 Power_On_Hours 0x0012 100 100 000 Old_age Always - 4244 12 Power_Cycle_Count 0x0012 100 100 000 Old_age Always - 172 168 Unknown_Attribute 0x0012 100 100 000 Old_age Always - 0 170 Unknown_Attribute 0x0003 088 088 000 Pre-fail Always - 134
This is the only value that is starting to go bad, but we don't know what it is.
173 Unknown_Attribute 0x0012 100 100 000 Old_age Always - 262151 192 Power-Off_Retract_Count 0x0012 100 100 000 Old_age Always - 128 194 Temperature_Celsius 0x0023 067 067 000 Pre-fail Always - 33 (Min/Max 33/33) 218 Unknown_Attribute 0x000b 100 100 050 Pre-fail Always - 0 231 Temperature_Celsius 0x0013 100 100 000 Pre-fail Always - 99 241 Total_LBAs_Written 0x0012 100 100 000 Old_age Always - 110
It does not say how much life is left. The Total_LBAs_Written count is absurd. Compare with one of mine: SMART Attributes Data Structure revision number: 1 Vendor Specific SMART Attributes with Thresholds: ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE 5 Reallocated_Sector_Ct 0x0033 100 100 010 Pre-fail Always - 0 9 Power_On_Hours 0x0032 098 098 000 Old_age Always - 6801 12 Power_Cycle_Count 0x0032 099 099 000 Old_age Always - 545 177 Wear_Leveling_Count 0x0013 099 099 000 Pre-fail Always - 14 179 Used_Rsvd_Blk_Cnt_Tot 0x0013 100 100 010 Pre-fail Always - 0 181 Program_Fail_Cnt_Total 0x0032 100 100 010 Old_age Always - 0 182 Erase_Fail_Count_Total 0x0032 100 100 010 Old_age Always - 0 183 Runtime_Bad_Block 0x0013 100 100 010 Pre-fail Always - 0 187 Uncorrectable_Error_Cnt 0x0032 100 100 000 Old_age Always - 0 190 Airflow_Temperature_Cel 0x0032 078 055 000 Old_age Always - 22 195 ECC_Error_Rate 0x001a 200 200 000 Old_age Always - 0 199 CRC_Error_Count 0x003e 100 100 000 Old_age Always - 0 235 POR_Recovery_Count 0x0012 099 099 000 Old_age Always - 20 241 Total_LBAs_Written 0x0032 099 099 000 Old_age Always - 8199006662 There are fields that have to do with being an SSD. -- Cheers / Saludos, Carlos E. R. (from 15.0 x86_64 at Telcontar)