High IO latency - low FSYNCS rate
- Thread starter TechSean
- Start date
Is your controller battery/flash backed? if not, your controller waits on sync writes until all data is written to disk.
Fsync should be 3000+
Raid5 and virtualsation ist not a good idea. Less performance. But fsync 100... look likes some HW issue.
Raid5 and virtualsation ist not a good idea. Less performance. But fsync 100... look likes some HW issue.
probably writeback disabled
get megacli from:
http://hwraid.le-vert.net/wiki/DebianPackages
get info with:
megacli -LDInfo -LAll -aAll
and look for Current Cache Policy
to enable writeback on the fly with:
megacli -LDSetProp WB -LALL -aALL -NoLog
get megacli from:
http://hwraid.le-vert.net/wiki/DebianPackages
get info with:
megacli -LDInfo -LAll -aAll
and look for Current Cache Policy
to enable writeback on the fly with:
megacli -LDSetProp WB -LALL -aALL -NoLog
Installed megacli and ran the command, Current Cache Policy shows as: WriteThrough, ReadAdaptive, Direct, No Write Cache if Bad BBU
Tried to enable writeback, but received an message stating "Battery capacity is below the threshold value" How can I check to verify that the battery connected to the H700 has enough capacity?
nice. Thank you for the info.
Looks like the Battery isn't being charged. Jesus, these C2100's servers are a nightmare.
BBU status for Adapter: 0
BatteryType: BBU
Battery State: Unknown
Battery backup charge time : 0 hours
BBU Capacity Info for Adapter: 0
Relative State of Charge: 20 %
Absolute State of charge: 20 %
Remaining Capacity: 382 mAh
Full Charge Capacity: 1900 mAh
Run time to empty: Battery is not being charged.
Average time to empty: Battery is not being charged.
Estimated Time to full recharge: Battery is not being charged.
Cycle Count: 0
Max Error = 100 %
Remaining Capacity Alarm = 190 mAh
Remining Time Alarm = 10 Min
BBU Design Info for Adapter: 0
Date of Manufacture: 08/16, 2016
Design Capacity: 1900 mAh
Design Voltage: 3700 mV
Specification Info: 8000
Serial Number: 2632
Pack Stat Configuration: 0xe4ac
Manufacture Name: SMP-PA
Firmware Version :
Device Name: X848372
Device Chemistry: LION
Battery FRU: N/A
Transparent Learn = 0
App Data = 0
BBU Properties for Adapter: 0
Auto Learn Period: 90 Days
Next Learn time: Tue Oct 3 13:37:37 2017
Learn Delay Interval:0 Hours
Auto-Learn Mode: Enabled
Exit Code: 0x00
-------------------
Looks like the Battery isn't being charged. Jesus, these C2100's servers are a nightmare.
BBU status for Adapter: 0
BatteryType: BBU
Battery State: Unknown
Battery backup charge time : 0 hours
BBU Capacity Info for Adapter: 0
Relative State of Charge: 20 %
Absolute State of charge: 20 %
Remaining Capacity: 382 mAh
Full Charge Capacity: 1900 mAh
Run time to empty: Battery is not being charged.
Average time to empty: Battery is not being charged.
Estimated Time to full recharge: Battery is not being charged.
Cycle Count: 0
Max Error = 100 %
Remaining Capacity Alarm = 190 mAh
Remining Time Alarm = 10 Min
BBU Design Info for Adapter: 0
Date of Manufacture: 08/16, 2016
Design Capacity: 1900 mAh
Design Voltage: 3700 mV
Specification Info: 8000
Serial Number: 2632
Pack Stat Configuration: 0xe4ac
Manufacture Name: SMP-PA
Firmware Version :
Device Name: X848372
Device Chemistry: LION
Battery FRU: N/A
Transparent Learn = 0
App Data = 0
BBU Properties for Adapter: 0
Auto Learn Period: 90 Days
Next Learn time: Tue Oct 3 13:37:37 2017
Learn Delay Interval:0 Hours
Auto-Learn Mode: Enabled
Exit Code: 0x00
-------------------
I would power off server and reconnect battery again - if this not help maybe battery is bad.
last idea - you can try to force learn cycle:
megacli -AdpBbuCmd -BbuLearn -aALL -NoLog
last idea - you can try to force learn cycle:
megacli -AdpBbuCmd -BbuLearn -aALL -NoLog