For some reason suddenly my wa usage in top has increased to 20%. The only thing which was done today was to update server to latest debian kernel.

Does anyone if this stats are good or bad? I am not sure how to read this stats and what to make out of it.

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	 0x000f 100 100 051 Pre-fail Always	 -	 0

3 Spin_Up_Time		 0x0007 083 083 011 Pre-fail Always	 -	 6010

4 Start_Stop_Count	 0x0032 100 100 000 Old_age Always	 -	 5

5 Reallocated_Sector_Ct 0x0033 100 100 010 Pre-fail Always	 -	 0

7 Seek_Error_Rate		 0x000f 100 100 051 Pre-fail Always	 -	 0

8 Seek_Time_Performance 0x0025 100 100 015 Pre-fail Offline	 -	 0

9 Power_On_Hours		 0x0032 095 095 000 Old_age Always	 -	 22954

10 Spin_Retry_Count	 0x0033 100 100 051 Pre-fail Always	 -	 0

11 Calibration_Retry_Count 0x0012 100 100 000 Old_age Always	 -	 0

12 Power_Cycle_Count	 0x0032 100 100 000 Old_age Always	 -	 5

13 Read_Soft_Error_Rate 0x000e 100 100 000 Old_age Always	 -	 0

183 Runtime_Bad_Block	 0x0032 100 100 000 Old_age Always	 -	 0

184 End-to-End_Error	 0x0033 100 100 000 Pre-fail Always	 -	 0

187 Reported_Uncorrect	 0x0032 100 100 000 Old_age Always	 -	 4

188 Command_Timeout		 0x0032 100 100 000 Old_age Always	 -	 0

190 Airflow_Temperature_Cel 0x0022 058 058 000 Old_age Always	 -	 42 (Lifetime Min/Max 28/42)

194 Temperature_Celsius	 0x0022 055 055 000 Old_age Always	 -	 45 (0 9 68 28)

195 Hardware_ECC_Recovered 0x001a 100 100 000 Old_age Always	 -	 1116032603

196 Reallocated_Event_Count 0x0032 100 100 000 Old_age Always	 -	 0

197 Current_Pending_Sector 0x0012 100 100 000 Old_age Always	 -	 0

198 Offline_Uncorrectable 0x0030 100 100 000 Old_age Offline	 -	 0

199 UDMA_CRC_Error_Count 0x003e 253 253 000 Old_age Always	 -	 0

200 Multi_Zone_Error_Rate 0x000a 100 100 000 Old_age Always	 -	 0

201 Soft_Read_Error_Rate 0x000a 100 100 000 Old_age Always	 -	 0

http://tny.cz/58950be4 iostat

Linux 2.6.32-5-amd64 10/06/2012 _x86_64_ (8 CPU)


avg-cpu: %user %nice %system %iowait %steal %idle

5.81 0.00 0.55 2.23 0.00 91.41


Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn

sdb 51.30 198.93 1386.44 769317 5361672

sda 51.09 188.12 1386.44 727500 5361672

md0 0.03 0.24 0.00 936 0

md1 0.14 1.04 0.05 4034 176

md2 72.58 385.32 1383.16 1490131 5348968

Something isn't right and i am not sure what it is.. if someone can help me out it would be great!

Have you just tried booting into the prev kernel?

Have you just tried booting into the prev kernel?

I am not super expert so would need some help. How can I do that?

Thanks

You should be able to select the old kernel as default from your grub. Details, I cannot help with since I don't use debian.

see you're using software raid, which by default so does a mdadm raid check weekly to make sure raid arrays are okay - could be that ?

me the raid check usually happens once a week on Sundays

cat /proc/mdstats

should tell you the status of your raid arrays