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Maniphest T194852

Possibly BBU issues on db1067
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Description

db1067 is showing really high temperature on the BBU

root@db1067:~#  megacli -AdpBbuCmd  -a0

BBU status for Adapter: 0

BatteryType: BBU
Voltage: 3957 mV
Current: 0 mA
Temperature: 76 C
Battery State: Optimal
BBU Firmware Status:

  Charging Status              : None
  Voltage                                 : OK
  Temperature                             : High
  Learn Cycle Requested	                  : No
  Learn Cycle Active                      : No
  Learn Cycle Status                      : OK
  Learn Cycle Timeout                     : No
  I2c Errors Detected                     : No
  Battery Pack Missing                    : No
  Battery Replacement required            : No
  Remaining Capacity Low                  : No
  Periodic Learn Required                 : No
  Transparent Learn                       : No
  No space to cache offload               : No
  Pack is about to fail & should be replaced : No
  Cache Offload premium feature required  : No
  Module microcode update required        : No

BBU GasGauge Status: 0x0238
Relative State of Charge: 100 %
Charger Status: Complete
Remaining Capacity: 542 mAh
Full Charge Capacity: 542 mAh
isSOHGood: Yes
  Battery backup charge time : 0 hours

BBU Capacity Info for Adapter: 0

  Relative State of Charge: 100 %
  Absolute State of charge: 0 %
  Remaining Capacity: 542 mAh
  Full Charge Capacity: 542 mAh
  Run time to empty: Battery is not being charged.
  Average time to empty: 43 Min.
  Estimated Time to full recharge: Battery is not being charged.
  Cycle Count: 1
Max Error = 0 %
Remaining Capacity Alarm = 0 mAh
Remining Time Alarm = 0 Min

BBU Design Info for Adapter: 0

  Date of Manufacture: 07/18, 2011
  Design Capacity: 90 mAh
  Design Voltage: 0 mV
  Specification Info: 0
  Serial Number: 0
  Pack Stat Configuration: 0x0000
  Manufacture Name:
  Firmware Version   : 0148 03
  Device Name:
  Device Chemistry:
  Battery FRU: N/A
Module Version = 0148 03
  Transparent Learn = 1
  App Data = 0

BBU Properties for Adapter: 0

  Auto Learn Period: 90 Days
  Next Learn time: None  Learn Delay Interval:0 Hours
  Auto-Learn Mode: Disabled

Exit Code: 0x00

The policy for the RAID is WriteThru at the moment , even though the BBU isn't showing anything bad.

root@db1067:~# megacli -ldinfo -l0 -a0 | grep Policy
Default Cache Policy: WriteBack, ReadAheadNone, Direct, No Write Cache if Bad BBU
Current Cache Policy: WriteThrough, ReadAheadNone, Direct, No Write Cache if Bad BBU
Default Access Policy: Read/Write
Current Access Policy: Read/Write
Disk Cache Policy   : Disk's Default
Default Power Savings Policy: Controller Defined
Current Power Savings Policy: None

Given that this is the s1 candidate master, it is probably better to just replace the BBU and be on the safe side

I have been talking to @Cmjohnson and he is going to check if we have spare BBUs

Details

SubjectRepoBranchLines +/-
db-eqiad.php: Repool db1067operations/mediawiki-configmaster+1 -1
db1067.yaml: Enable notifications on db1067operations/puppetproduction+0 -1
db1067.yaml: Disable notificationsoperations/puppetproduction+1 -0
Customize query in gerrit

Event Timeline

• Marostegui created this task.May 16 2018, 8:08 PM
Restricted Application added a project: SRE. · View Herald TranscriptMay 16 2018, 8:08 PM
Restricted Application added a subscriber: Aklapper. · View Herald Transcript
• Marostegui triaged this task as High priority.May 16 2018, 8:08 PM
• Marostegui moved this task from Triage to In progress on the DBA board.
• Marostegui added a comment.May 16 2018, 8:11 PM

The BBU is definitely having some issues, I cannot even force a relearn:

root@db1067:~#  megacli -AdpBbuCmd -BbuLearn -aALL -NoLog

Adapter 0: BBU Learn Failed

Exit Code: 0x01
Stashbot subscribed.May 16 2018, 8:13 PM

Mentioned in SAL (#wikimedia-operations) [2018-05-16T20:13:38Z] <marostegui> Force WriteBack policy on db1067 - T194852

• Marostegui added a comment.May 16 2018, 8:14 PM

I have manually set the policy to WriteBack so at least the server can catch up and not lag forever:

root@db1067:~# megacli -LDSetProp -ForcedWB -Immediate -Lall -aAll

Set Write Policy to Forced WriteBack on Adapter 0, VD 0 (target id: 0) success

Exit Code: 0x00
root@db1067:~# megacli -ldinfo -l0 -a0 | grep Policy
Default Cache Policy: WriteBack, ReadAheadNone, Direct, Write Cache OK if Bad BBU
Current Cache Policy: WriteBack, ReadAheadNone, Direct, Write Cache OK if Bad BBU
• Marostegui added a comment.May 16 2018, 8:20 PM

These are the logs from the BBU after the reboot for the rack change

seqNum: 0x0002e80d
Time: Wed May 16 16:35:05 2018

Code: 0x00000093
Class: 0
Locale: 0x08
Event Description: Battery started charging
Event Data:
===========
None


seqNum: 0x0002e80f
Time: Wed May 16 16:50:15 2018

Code: 0x000000f2
Class: 0
Locale: 0x08
Event Description: Battery charge complete
Event Data:
===========
None


seqNum: 0x0002e810
Time: Wed May 16 17:10:50 2018

Code: 0x00000091
Class: 1
Locale: 0x08
Event Description: Battery temperature is high
Event Data:
===========
None


seqNum: 0x0002e811
Time: Wed May 16 17:10:51 2018

Code: 0x000000c3
Class: 1
Locale: 0x08
Event Description: BBU disabled; changing WB virtual disks to WT, Forced WB VDs are not affected
Event Data:
===========

It definitely needs a replacement.

Stashbot added a comment.May 17 2018, 11:08 AM

Mentioned in SAL (#wikimedia-operations) [2018-05-17T11:08:22Z] <marostegui> Stop MySQL and poweroff db1067 - T194852

• Marostegui added a comment.May 17 2018, 12:41 PM

For the record after having the server powered off for 1 hour:

Initial BBU temperature right after powerup: Temperature: 42 C

jcrespo added a comment.May 17 2018, 12:47 PM

for comparison, also:

root@db1067:~$ cat /sys/class/thermal/thermal_zone*/temp
54000
45000
root@db1067:~$ date
Thu May 17 12:46:16 UTC 2018
• Marostegui added a comment.May 17 2018, 12:52 PM

After 10 minutes the temperature reached 45C

I have started MySQL now.

• Marostegui added a comment.May 17 2018, 12:55 PM

I have set back the default policy to WriteBack and WriteThru if the BBU is not present/broken. So the host is as it was before all the issues.

root@db1067:~# megacli -ldinfo -l0 -a0 | grep Policy
Default Cache Policy: WriteBack, ReadAheadNone, Direct, No Write Cache if Bad BBU
Current Cache Policy: WriteBack, ReadAheadNone, Direct, No Write Cache if Bad BBU
• Marostegui added a comment.May 17 2018, 2:29 PM

This is still working fine - maybe it was a one time thing?

root@db1067:~#  megacli -AdpBbuCmd -a0  | grep Temper
Temperature: 48 C
  Temperature                             : OK

Let's wait until tomorrow, and do another reboot.

• Marostegui added a comment.May 18 2018, 5:17 AM

Looks like it was a one time thing:

root@db1067:~#  megacli -AdpBbuCmd -a0  | grep Temper
Temperature: 47 C
  Temperature                             : OK

I am going to reboot it again and see if it keeps fine after reboot.

Stashbot added a comment.May 18 2018, 5:18 AM

Mentioned in SAL (#wikimedia-operations) [2018-05-18T05:18:16Z] <marostegui> Stop MySQL and reboot db1067 - T194852

• Marostegui added a comment.May 18 2018, 5:26 AM

After reboot:

root@db1067:~#  megacli -AdpBbuCmd -a0  | grep Temper
Temperature: 48 C
  Temperature                             : OK
gerritbot subscribed.May 18 2018, 5:49 AM

Change 433692 had a related patch set uploaded (by Marostegui; owner: Marostegui):
[operations/puppet@production] db1067.yaml: Disable notifications

https://gerrit.wikimedia.org/r/433692

gerritbot added a project: Patch-For-Review.May 18 2018, 5:49 AM

Change 433692 merged by Marostegui:
[operations/puppet@production] db1067.yaml: Disable notifications

https://gerrit.wikimedia.org/r/433692

• Marostegui added a comment.May 18 2018, 3:44 PM

Still looking good after 10 hours:

root@db1067:~#  megacli -AdpBbuCmd -a0  | grep Temper
Temperature: 47 C
  Temperature                             : OK

I am going to reboot it again and leave it for the weekend to see how it goes.

Stashbot added a comment.May 18 2018, 3:44 PM

Mentioned in SAL (#wikimedia-operations) [2018-05-18T15:44:46Z] <marostegui> Stop MySQL and reboot db1067 - T194852

• Marostegui added a comment.May 18 2018, 3:51 PM

For the record, after the reboot:

root@db1067:~#  megacli -AdpBbuCmd -a0  | grep Temper
Temperature: 48 C
  Temperature
• Marostegui added a comment.May 21 2018, 5:27 AM

After the weekend, everything looks fine:

root@db1067:~#  megacli -AdpBbuCmd -a0  | grep Temper
Temperature: 47 C
  Temperature                             : OK

Going to give it one more reboot and see what happens. If it goes fine, I will repool it.

Stashbot added a comment.May 21 2018, 5:27 AM

Mentioned in SAL (#wikimedia-operations) [2018-05-21T05:27:08Z] <marostegui> Stop MySQL and reboot db1067 - T194852

• Marostegui added a comment.May 21 2018, 5:38 AM

After the reboot:

root@db1067:~#  megacli -AdpBbuCmd -a0  | grep Temper
Temperature: 48 C
  Temperature                             : OK
gerritbot added a comment.May 21 2018, 5:48 AM

Change 434299 had a related patch set uploaded (by Marostegui; owner: Marostegui):
[operations/puppet@production] db1067.yaml: Enable notifications on db1067

https://gerrit.wikimedia.org/r/434299

gerritbot added a comment.May 21 2018, 5:49 AM

Change 434299 merged by Marostegui:
[operations/puppet@production] db1067.yaml: Enable notifications on db1067

https://gerrit.wikimedia.org/r/434299

• Marostegui added a comment.May 21 2018, 2:28 PM

Still looking fine

root@db1067:~#  megacli -AdpBbuCmd -a0  | grep Temper
Temperature: 47 C
  Temperature                             : OK

If by tomorrow morning (EU time) it is still good, I will repool it.

• Marostegui added a comment.May 22 2018, 5:17 AM
root@db1067:~#  megacli -AdpBbuCmd -a0  | grep Temper
Temperature: 47 C
  Temperature                             : OK
gerritbot added a comment.May 22 2018, 5:19 AM

Change 434435 had a related patch set uploaded (by Marostegui; owner: Marostegui):
[operations/mediawiki-config@master] db-eqiad.php: Repool db1067

https://gerrit.wikimedia.org/r/434435

gerritbot added a comment.May 22 2018, 5:22 AM

Change 434435 merged by jenkins-bot:
[operations/mediawiki-config@master] db-eqiad.php: Repool db1067

https://gerrit.wikimedia.org/r/434435

• Marostegui closed this task as Resolved.May 22 2018, 5:25 AM

I have repooled this host.
It didn't have any issues after many days and many reboots. So it was probably a one time thing.
Resolving for now.

• Vvjjkkii renamed this task from Possibly BBU issues on db1067 to rucaaaaaaa.Jul 1 2018, 1:10 AM
• Vvjjkkii reopened this task as Open.
• Vvjjkkii removed • Cmjohnson as the assignee of this task.
• Vvjjkkii added projects: CheckUser, Connected-Open-Heritage-Batch-uploads (RAÄ-KMB_1_2017-02), Tamil-Sites, Gamepress, Hashtags, Jade, KartoEditor, Language-2018-Apr-June, New-Editor-Experiences, Mail, TCB-Team (now WMDE-TechWish).
• Vvjjkkii updated the task description. (Show Details)
• Vvjjkkii removed subscribers: gerritbot, Aklapper.
• Marostegui renamed this task from rucaaaaaaa to Possibly BBU issues on db1067.Jul 1 2018, 6:42 PM
• Marostegui closed this task as Resolved.
• Marostegui assigned this task to • Cmjohnson.
• Marostegui lowered the priority of this task from High to Medium.
• Marostegui removed projects: TCB-Team (now WMDE-TechWish), Mail, New-Editor-Experiences, Language-2018-Apr-June, KartoEditor, Jade, Hashtags, Gamepress, Tamil-Sites, Connected-Open-Heritage-Batch-uploads (RAÄ-KMB_1_2017-02), CheckUser.
• Marostegui updated the task description. (Show Details)
CommunityTechBot updated the task description. (Show Details)Jul 5 2018, 6:43 PM
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