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Degraded RAID on cloudvirt1024 -- Filesystem mounted read-only
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Description

TASK AUTO-GENERATED by Nagios/Icinga RAID event handler

A degraded RAID (megacli) was detected on host cloudvirt1024. An automatic snapshot of the current RAID status is attached below.

Please sync with the service owner to find the appropriate time window before actually replacing any failed hardware.

CRITICAL: 1 failed LD(s) (Degraded)

$ sudo /usr/local/lib/nagios/plugins/get-raid-status-megacli
=== RaidStatus (does not include components in optimal state)
name: Adapter #0

	Virtual Drive: 0 (Target Id: 0)
	RAID Level: Primary-1, Secondary-0, RAID Level Qualifier-0
	State: =====> Degraded <=====
	Number Of Drives: 8
	Number of Spans: 1
	Current Cache Policy: WriteBack, ReadAhead, Direct, No Write Cache if Bad BBU

		Span: 0 - Number of PDs: 8

			PD: 6 Information
			Enclosure Device ID: 32
			Slot Number: 9
			Drive's position: DiskGroup: 0, Span: 0, Arm: 6
			Media Error Count: 0
			Other Error Count: 418
			Predictive Failure Count: 0
			Last Predictive Failure Event Seq Number: 0

				Raw Size: 1.746 TB [0xdf8fe2b0 Sectors]
				Firmware state: =====> Rebuild <=====
				Media Type: Solid State Device
				Drive Temperature: 28C (82.40 F)

=== RaidStatus completed

Event Timeline

This host also has a bad disk in slot number 8. T230289

Bstorm added a subscriber: Bstorm.Aug 14 2019, 1:07 AM

It seems that this is showing a loss of 4 disks. We may want to check a controller in this case.

I see that after our big outage where this was one of the two hypervisors that went down from disk issues, we didn't follow up with updating controller firmware: T216733

I don't know if the disks are bad or the controller is just marking them bad.

Bstorm added a comment.EditedAug 14 2019, 1:09 AM

Since the filesystem has gone read-only, I was only able to get part of the firmware terminal logs.

P8906

Some controller info:

Adapter #0

==============================================================================
                    Versions
                ================
Product Name    : PERC H730P Adapter
Serial No       : 87U048Y
FW Package Build: 25.5.3.0005

                    Mfg. Data
                ================
Mfg. Date       : 08/04/18
Rework Date     : 08/04/18
Revision No     : A04
Battery FRU     : N/A

                Image Versions in Flash:
                ================
BIOS Version       : 6.33.01.0_4.16.07.00_0x06120301
Ctrl-R Version     : 5.18-0700
FW Version         : 4.270.00-8178
NVDATA Version     : 3.1511.00-0014
Boot Block Version : 3.07.00.00-0003

                Pending Images in Flash
                ================
None

                PCI Info
                ================
Controller Id   : 0000
Vendor Id       : 1000
Device Id       : 005d
SubVendorId     : 1028
SubDeviceId     : 1f42

Host Interface  : PCIE

ChipRevision    : C0

Link Speed           : 3 
Number of Frontend Port: 0 
Device Interface  : PCIE

Number of Backend Port: 8 
Port  :  Address
0        500056b37c0f19ff 
1        0000000000000000 
2        0000000000000000 
3        0000000000000000 
4        0000000000000000 
5        0000000000000000 
6        0000000000000000 
7        0000000000000000 

                HW Configuration
                ================
SAS Address      : 5d0946607ed35900
BBU              : Present
Alarm            : Absent
NVRAM            : Present
Serial Debugger  : Present
Memory           : Present
Flash            : Present
Memory Size      : 2048MB
TPM              : Absent
On board Expander: Absent
Upgrade Key      : Absent
Temperature sensor for ROC    : Present
Temperature sensor for controller    : Present

ROC temperature : 68  degree Celsius
Controller temperature : 68  degree Celcius

                Settings
                ================
Current Time                     : 1:11:56 8/14, 2019
Predictive Fail Poll Interval    : 300sec
Interrupt Throttle Active Count  : 16
Interrupt Throttle Completion    : 50us
Rebuild Rate                     : 30%
PR Rate                          : 30%
BGI Rate                         : 30%
Check Consistency Rate           : 30%
Reconstruction Rate              : 30%
Cache Flush Interval             : 4s
Max Drives to Spinup at One Time : 4
Delay Among Spinup Groups        : 12s
Physical Drive Coercion Mode     : 128MB
Cluster Mode                     : Disabled
Alarm                            : Disabled
Auto Rebuild                     : Enabled
Battery Warning                  : Enabled
Ecc Bucket Size                  : 255
Ecc Bucket Leak Rate             : 240 Minutes
Restore HotSpare on Insertion    : Disabled
Expose Enclosure Devices         : Disabled
Maintain PD Fail History         : Disabled
Host Request Reordering          : Enabled
Auto Detect BackPlane Enabled    : SGPIO/i2c SEP
Load Balance Mode                : Auto
Use FDE Only                     : Yes
Security Key Assigned            : No
Security Key Failed              : No
Security Key Not Backedup        : No
Default LD PowerSave Policy      : Controller Defined
Maximum number of direct attached drives to spin up in 1 min : 0 
Auto Enhanced Import             : No
Any Offline VD Cache Preserved   : Yes
Allow Boot with Preserved Cache  : No
Disable Online Controller Reset  : No
PFK in NVRAM                     : No
Use disk activity for locate     : No
POST delay                       : 90 seconds
BIOS Error Handling              : Pause on Errors
Current Boot Mode                 :Normal
                Capabilities
                ================
RAID Level Supported             : RAID0, RAID1, RAID5, RAID6, RAID10, RAID50, RAID60, PRL 11, PRL 11 with spanning, PRL11-RLQ0 DDF layout with no span, PRL11-RLQ0 DDF layout with span
Supported Drives                 : SAS, SATA

Allowed Mixing:

Mix in Enclosure Allowed

                Status
                ================
ECC Bucket Count                 : 0

                Limitations
                ================
Max Arms Per VD          : 32 
Max Spans Per VD         : 8 
Max Arrays               : 128 
Max Number of VDs        : 64 
Max Parallel Commands    : 928 
Max SGE Count            : 60 
Max Data Transfer Size   : 8192 sectors 
Max Strips PerIO         : 128 
Max LD per array         : 16 
Min Strip Size           : 64 KB
Max Strip Size           : 1.0 MB
Max Configurable CacheCade Size: 0 GB
Current Size of CacheCade      : 0 GB
Current Size of FW Cache       : 1931 MB

                Device Present
                ================
Virtual Drives    : 1 
  Degraded        : 0 
  Offline         : 1 
Physical Devices  : 7 
  Disks           : 6 
  Critical Disks  : 0 
  Failed Disks    : 0 

                Supported Adapter Operations
                ================
Rebuild Rate                    : Yes
CC Rate                         : Yes
BGI Rate                        : Yes
Reconstruct Rate                : Yes
Patrol Read Rate                : Yes
Alarm Control                   : Yes
Cluster Support                 : No
BBU                             : Yes
Spanning                        : Yes
Dedicated Hot Spare             : Yes
Revertible Hot Spares           : Yes
Foreign Config Import           : Yes
Self Diagnostic                 : Yes
Allow Mixed Redundancy on Array : No
Global Hot Spares               : Yes
Deny SCSI Passthrough           : No
Deny SMP Passthrough            : No
Deny STP Passthrough            : No
Support Security                : Yes
Snapshot Enabled                : No
Support the OCE without adding drives : Yes
Support PFK                     : No
Support PI                      : No
Support Boot Time PFK Change    : No
Disable Online PFK Change       : No
Support Shield State            : Yes
Block SSD Write Disk Cache Change: No
Support Online FW Update        : Yes

                Supported VD Operations
                ================
Read Policy          : Yes
Write Policy         : Yes
IO Policy            : Yes
Access Policy        : Yes
Disk Cache Policy    : Yes
Reconstruction       : Yes
Deny Locate          : No
Deny CC              : No
Allow Ctrl Encryption: No
Enable LDBBM         : Yes
Support Breakmirror  : Yes
Power Savings        : Yes

                Supported PD Operations
                ================
Force Online                            : Yes
Force Offline                           : Yes
Force Rebuild                           : Yes
Deny Force Failed                       : No
Deny Force Good/Bad                     : No
Deny Missing Replace                    : No
Deny Clear                              : No
Deny Locate                             : No
Support Temperature                     : Yes
NCQ                                     : No
Disable Copyback                        : No
Enable JBOD                             : Yes
Enable Copyback on SMART                : No
Enable Copyback to SSD on SMART Error   : No
Enable SSD Patrol Read                  : No
PR Correct Unconfigured Areas           : Yes
Enable Spin Down of UnConfigured Drives : No
Disable Spin Down of hot spares         : Yes
Spin Down time                          : 30 
T10 Power State                         : Yes
                Error Counters
                ================
Memory Correctable Errors   : 0 
Memory Uncorrectable Errors : 0 

                Cluster Information
                ================
Cluster Permitted     : No
Cluster Active        : No

                Default Settings
                ================
Phy Polarity                     : 0 
Phy PolaritySplit                : 0 
Background Rate                  : 30 
Strip Size                       : 64kB
Flush Time                       : 4 seconds
Write Policy                     : WB
Read Policy                      : Adaptive
Cache When BBU Bad               : Disabled
Cached IO                        : No
SMART Mode                       : Mode 6
Alarm Disable                    : No
Coercion Mode                    : 128MB
ZCR Config                       : Unknown
Dirty LED Shows Drive Activity   : No
BIOS Continue on Error           : 1 
Spin Down Mode                   : None
Allowed Device Type              : SAS/SATA Mix
Allow Mix in Enclosure           : Yes
Allow HDD SAS/SATA Mix in VD     : No
Allow SSD SAS/SATA Mix in VD     : No
Allow HDD/SSD Mix in VD          : No
Allow SATA in Cluster            : No
Max Chained Enclosures           : 4 
Disable Ctrl-R                   : No
Enable Web BIOS                  : No
Direct PD Mapping                : Yes
BIOS Enumerate VDs               : Yes
Restore Hot Spare on Insertion   : No
Expose Enclosure Devices         : No
Maintain PD Fail History         : No
Disable Puncturing               : No
Zero Based Enclosure Enumeration : Yes
PreBoot CLI Enabled              : No
LED Show Drive Activity          : Yes
Cluster Disable                  : Yes
SAS Disable                      : No
Auto Detect BackPlane Enable     : SGPIO/i2c SEP
Use FDE Only                     : Yes
Enable Led Header                : No
Delay during POST                : 0 
EnableCrashDump                  : No
Disable Online Controller Reset  : No
EnableLDBBM                      : Yes
Un-Certified Hard Disk Drives    : Allow
Treat Single span R1E as R10     : Yes
Max LD per array                 : 16
Power Saving option              : Don't spin down unconfigured drives
Don't spin down Hot spares
Don't Auto spin down Configured Drives
Power settings apply to all drives - individual PD/LD power settings cannot be set
Max power savings option is  not allowed for LDs. Only T10 power conditions are to be used.
Cached writes are not used for spun down VDs
Can schedule disable power savings at controller level
Default spin down time in minutes: 30 
Enable JBOD                      : Yes
TTY Log In Flash                 : Yes
Auto Enhanced Import             : No
BreakMirror RAID Support         : Yes
Disable Join Mirror              : Yes
Enable Shield State              : No
Time taken to detect CME         : 60s

Exit Code: 0x00

Nothing in the eventlog when I tried to retrieve it.

Bstorm renamed this task from Degraded RAID on cloudvirt1024 to Degraded RAID on cloudvirt1024 -- Filesystem mounted read-only.Aug 14 2019, 1:31 AM

Just to re-emphasize: this system does not have any loads on it at this time, so it's a wonderful time for it to blow up. It can be repaired and rebooted as needed.

Mentioned in SAL (#wikimedia-cloud) [2019-08-14T13:57:21Z] <jeh> added icingia downtime until 2019-08-28 on cloudvirt1024 T230442

Cmjohnson moved this task from Backlog to Cloud Tasks on the ops-eqiad board.Aug 15 2019, 3:03 PM

Received replacement SSD 1.9t

Did Dell only send replacement SSD? This has lost 4 disks in a very short time (all are failed now and most missing in the list of disks). I highly suspect there is another issue that isn't the disks themselves (controller firmware, etc. maybe?). This is also not the first time this server did this (fail out multiple disks until the filesystem failed), see:
https://wikitech.wikimedia.org/wiki/Incident_documentation/20190213-cloudvps
T216218: Cloud VPS outage on cloudvirt1024 and cloudvirt1018 due to storage failure
I mean, it might be fine, and coincidences do happen, but I'm curious.