Добрый вечер. Сегодня посмотрел iotop и обнаружил, что md3_raid1 часто трескает 99% io. http://poiuty.ru/img/afddc02951159fc0e1cef5c70666.png
На серваке несколько сайтов. IO они вообще не должны юзать. http://poiuty.ru/img/435e4b03058332ed906899df0e3c.png
Куда копать?
И смарты
# smartctl -A /dev/sda
smartctl 5.42 2011-10-20 r3458 [x86_64-linux-2.6.32-279.14.1.el6.x86_64] (local build)
Copyright (C) 2002-11 by Bruce Allen, http://smartmontools.sourceforge.net
=== START OF READ SMART DATA SECTION ===
SMART Attributes Data Structure revision number: 10
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 108 099 006 Pre-fail Always - 19081238
3 Spin_Up_Time 0x0003 093 093 000 Pre-fail Always - 0
4 Start_Stop_Count 0x0032 100 100 020 Old_age Always - 7
5 Reallocated_Sector_Ct 0x0033 100 100 036 Pre-fail Always - 0
7 Seek_Error_Rate 0x000f 083 060 030 Pre-fail Always - 219781224
9 Power_On_Hours 0x0032 089 089 000 Old_age Always - 9941
10 Spin_Retry_Count 0x0013 100 100 097 Pre-fail Always - 0
12 Power_Cycle_Count 0x0032 100 100 020 Old_age Always - 7
183 Runtime_Bad_Block 0x0032 098 098 000 Old_age Always - 2
184 End-to-End_Error 0x0032 100 100 099 Old_age Always - 0
187 Reported_Uncorrect 0x0032 100 100 000 Old_age Always - 0
188 Command_Timeout 0x0032 100 100 000 Old_age Always - 0
189 High_Fly_Writes 0x003a 052 052 000 Old_age Always - 48
190 Airflow_Temperature_Cel 0x0022 053 046 045 Old_age Always - 47 (Min/Max 45/54)
191 G-Sense_Error_Rate 0x0032 100 100 000 Old_age Always - 0
192 Power-Off_Retract_Count 0x0032 100 100 000 Old_age Always - 5
193 Load_Cycle_Count 0x0032 100 100 000 Old_age Always - 7
194 Temperature_Celsius 0x0022 047 054 000 Old_age Always - 47 (0 20 0 0 0)
195 Hardware_ECC_Recovered 0x001a 012 010 000 Old_age Always - 19081238
197 Current_Pending_Sector 0x0012 100 100 000 Old_age Always - 0
198 Offline_Uncorrectable 0x0010 100 100 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x003e 200 200 000 Old_age Always - 0
240 Head_Flying_Hours 0x0000 100 253 000 Old_age Offline - 234208861628117
241 Total_LBAs_Written 0x0000 100 253 000 Old_age Offline - 2163565268
242 Total_LBAs_Read 0x0000 100 253 000 Old_age Offline - 2028324408
# smartctl -A /dev/sdb
smartctl 5.42 2011-10-20 r3458 [x86_64-linux-2.6.32-279.14.1.el6.x86_64] (local build)
Copyright (C) 2002-11 by Bruce Allen, http://smartmontools.sourceforge.net
=== START OF READ SMART DATA SECTION ===
SMART Attributes Data Structure revision number: 10
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 119 099 006 Pre-fail Always - 201477547
3 Spin_Up_Time 0x0003 093 093 000 Pre-fail Always - 0
4 Start_Stop_Count 0x0032 100 100 020 Old_age Always - 7
5 Reallocated_Sector_Ct 0x0033 100 100 036 Pre-fail Always - 0
7 Seek_Error_Rate 0x000f 083 060 030 Pre-fail Always - 222571181
9 Power_On_Hours 0x0032 089 089 000 Old_age Always - 9941
10 Spin_Retry_Count 0x0013 100 100 097 Pre-fail Always - 0
12 Power_Cycle_Count 0x0032 100 100 020 Old_age Always - 7
183 Runtime_Bad_Block 0x0032 098 098 000 Old_age Always - 2
184 End-to-End_Error 0x0032 100 100 099 Old_age Always - 0
187 Reported_Uncorrect 0x0032 100 100 000 Old_age Always - 0
188 Command_Timeout 0x0032 100 100 000 Old_age Always - 0
189 High_Fly_Writes 0x003a 100 100 000 Old_age Always - 0
190 Airflow_Temperature_Cel 0x0022 057 046 045 Old_age Always - 43 (Min/Max 41/54)
191 G-Sense_Error_Rate 0x0032 100 100 000 Old_age Always - 0
192 Power-Off_Retract_Count 0x0032 100 100 000 Old_age Always - 5
193 Load_Cycle_Count 0x0032 100 100 000 Old_age Always - 7
194 Temperature_Celsius 0x0022 043 054 000 Old_age Always - 43 (0 20 0 0 0)
195 Hardware_ECC_Recovered 0x001a 023 010 000 Old_age Always - 201477547
197 Current_Pending_Sector 0x0012 100 100 000 Old_age Always - 0
198 Offline_Uncorrectable 0x0010 100 100 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x003e 200 200 000 Old_age Always - 0
240 Head_Flying_Hours 0x0000 100 253 000 Old_age Offline - 58265526347477
241 Total_LBAs_Written 0x0000 100 253 000 Old_age Offline - 4135681133
242 Total_LBAs_Read 0x0000 100 253 000 Old_age Offline - 1994868132
