최근 데이터베이스 쿼리 실행 시간이 평소보다 훨씬 오래 걸렸습니다. 조사 결과 디스크 읽기 속도가 매우 느린 것 같습니다.
과거에는 RAID 컨트롤러 가 BBU 에서 재 학습주기 를 시작하고 연속 기입으로 전환하여 비슷한 문제가 발생했습니다 . 이번에는 그렇지 않은 것 같습니다.
나는 bonnie++
며칠 동안 몇 번 달렸다 . 결과는 다음과 같습니다.
22-82 M / s 판독 값은 상당히 무섭게 보입니다. dd
원시 장치에 대해 몇 분 동안 실행 하면 15.8MB / s ~ 225MB / s의 읽기 위치가 표시됩니다 (아래 업데이트 참조). iotop
IO와 경쟁하는 다른 프로세스를 나타내지 않으므로 읽기 속도가 왜 가변적인지 잘 모르겠습니다.
RAID 카드는 XFS 파일 시스템이있는 RAID10에 12 개의 SAS 드라이브 (15k, 300GB)가있는 MegaRAID SAS 9280입니다 (RAID1에 구성된 두 개의 SSD에있는 OS). SMART 경고가 표시되지 않고 어레이 성능이 저하되지 않은 것으로 보입니다.
또한 실행 xfs_check
되었으며 XFS 일관성 문제가없는 것으로 보입니다.
다음 조사 단계는 무엇입니까?
서버 사양
Ubuntu 12.04.5 LTS
128GB RAM
Intel(R) Xeon(R) CPU E5-2643 0 @ 3.30GHz
출력 xfs_repair -n
:
Phase 1 - find and verify superblock...
Phase 2 - using internal log
- scan filesystem freespace and inode maps...
- found root inode chunk
Phase 3 - for each AG...
- scan (but don't clear) agi unlinked lists...
- process known inodes and perform inode discovery...
- agno = 0
- agno = 1
- agno = 2
- agno = 3
- process newly discovered inodes...
Phase 4 - check for duplicate blocks...
- setting up duplicate extent list...
- check for inodes claiming duplicate blocks...
- agno = 1
- agno = 3
- agno = 2
- agno = 0
No modify flag set, skipping phase 5
Phase 6 - check inode connectivity...
- traversing filesystem ...
- traversal finished ...
- moving disconnected inodes to lost+found ...
Phase 7 - verify link counts...
No modify flag set, skipping filesystem flush and exiting.
출력 megacli -AdpAllInfo -aAll
:
Versions
================
Product Name : LSI MegaRAID SAS 9280-4i4e
Serial No : SV24919344
FW Package Build: 12.12.0-0124
Mfg. Data
================
Mfg. Date : 12/06/12
Rework Date : 00/00/00
Revision No : 04B
Battery FRU : N/A
Image Versions in Flash:
================
FW Version : 2.130.363-1846
BIOS Version : 3.25.00_4.12.05.00_0x05180000
Preboot CLI Version: 04.04-020:#%00009
WebBIOS Version : 6.0-51-e_47-Rel
NVDATA Version : 2.09.03-0039
Boot Block Version : 2.02.00.00-0000
BOOT Version : 09.250.01.219
Pending Images in Flash
================
None
PCI Info
================
Controller Id : 0000
Vendor Id : 1000
Device Id : 0079
SubVendorId : 1000
SubDeviceId : 9282
Host Interface : PCIE
ChipRevision : B4
Link Speed : 0
Number of Frontend Port: 0
Device Interface : PCIE
Number of Backend Port: 8
Port : Address
0 5003048001c1e47f
1 0000000000000000
2 0000000000000000
3 0000000000000000
4 0000000000000000
5 0000000000000000
6 0000000000000000
7 0000000000000000
HW Configuration
================
SAS Address : 500605b005a6cbc0
BBU : Present
Alarm : Present
NVRAM : Present
Serial Debugger : Present
Memory : Present
Flash : Present
Memory Size : 512MB
TPM : Absent
On board Expander: Absent
Upgrade Key : Absent
Temperature sensor for ROC : Absent
Temperature sensor for controller : Absent
Settings
================
Current Time : 14:58:51 7/11, 2016
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 : 2s
Physical Drive Coercion Mode : Disabled
Cluster Mode : Disabled
Alarm : Enabled
Auto Rebuild : Enabled
Battery Warning : Enabled
Ecc Bucket Size : 15
Ecc Bucket Leak Rate : 1440 Minutes
Restore HotSpare on Insertion : Disabled
Expose Enclosure Devices : Enabled
Maintain PD Fail History : Enabled
Host Request Reordering : Enabled
Auto Detect BackPlane Enabled : SGPIO/i2c SEP
Load Balance Mode : Auto
Use FDE Only : No
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 : 120
Auto Enhanced Import : No
Any Offline VD Cache Preserved : No
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 : Stop On Errors
Current Boot Mode :Normal
Capabilities
================
RAID Level Supported : RAID0, RAID1, RAID5, RAID6, RAID00, RAID10, RAID50, RAID60, PRL 11, PRL 11 with spanning, SRL 3 supported, PRL11-RLQ0 DDF layout with no span, PRL11-RLQ0 DDF layout with span
Supported Drives : SAS, SATA
Allowed Mixing:
Mix in Enclosure Allowed
Mix of SAS/SATA of HDD type in VD 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 : 1008
Max SGE Count : 80
Max Data Transfer Size : 8192 sectors
Max Strips PerIO : 42
Max LD per array : 16
Min Strip Size : 8 KB
Max Strip Size : 1.0 MB
Max Configurable CacheCade Size: 0 GB
Current Size of CacheCade : 0 GB
Current Size of FW Cache : 350 MB
Device Present
================
Virtual Drives : 2
Degraded : 0
Offline : 0
Physical Devices : 16
Disks : 14
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 : No
Snapshot Enabled : No
Support the OCE without adding drives : Yes
Support PFK : Yes
Support PI : No
Support Boot Time PFK Change : No
Disable Online PFK Change : No
PFK TrailTime Remaining : 0 days 0 hours
Support Shield State : No
Block SSD Write Disk Cache Change: No
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 : No
Support Breakmirror : No
Power Savings : No
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 : No
Enable Copyback on SMART : No
Enable Copyback to SSD on SMART Error : Yes
Enable SSD Patrol Read : No
PR Correct Unconfigured Areas : Yes
Enable Spin Down of UnConfigured Drives : Yes
Disable Spin Down of hot spares : No
Spin Down time : 30
T10 Power State : No
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 : 256kB
Flush Time : 4 seconds
Write Policy : WB
Read Policy : Adaptive
Cache When BBU Bad : Disabled
Cached IO : No
SMART Mode : Mode 6
Alarm Disable : Yes
Coercion Mode : None
ZCR Config : Unknown
Dirty LED Shows Drive Activity : No
BIOS Continue on Error : 0
Spin Down Mode : None
Allowed Device Type : SAS/SATA Mix
Allow Mix in Enclosure : Yes
Allow HDD SAS/SATA Mix in VD : Yes
Allow SSD SAS/SATA Mix in VD : No
Allow HDD/SSD Mix in VD : No
Allow SATA in Cluster : No
Max Chained Enclosures : 16
Disable Ctrl-R : Yes
Enable Web BIOS : Yes
Direct PD Mapping : No
BIOS Enumerate VDs : Yes
Restore Hot Spare on Insertion : No
Expose Enclosure Devices : Yes
Maintain PD Fail History : Yes
Disable Puncturing : No
Zero Based Enclosure Enumeration : No
PreBoot CLI Enabled : Yes
LED Show Drive Activity : Yes
Cluster Disable : Yes
SAS Disable : No
Auto Detect BackPlane Enable : SGPIO/i2c SEP
Use FDE Only : No
Enable Led Header : No
Delay during POST : 0
EnableCrashDump : No
Disable Online Controller Reset : No
EnableLDBBM : No
Un-Certified Hard Disk Drives : Allow
Treat Single span R1E as R10 : No
Max LD per array : 16
Power Saving option : Don't Auto spin down Configured Drives
Max power savings option is not allowed for LDs. Only T10 power conditions are to be used.
Default spin down time in minutes: 30
Enable JBOD : No
TTY Log In Flash : No
Auto Enhanced Import : No
BreakMirror RAID Support : No
Disable Join Mirror : No
Enable Shield State : No
Time taken to detect CME : 60s
출력 megacli -AdpBbuCmd -GetBbuSTatus -aAll
:
BBU status for Adapter: 0
BatteryType: iBBU
Voltage: 4068 mV
Current: 0 mA
Temperature: 30 C
Battery State: Optimal
BBU Firmware Status:
Charging Status : Charging
Voltage : OK
Temperature : OK
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
GasGuageStatus:
Fully Discharged : No
Fully Charged : No
Discharging : Yes
Initialized : Yes
Remaining Time Alarm : No
Discharge Terminated : No
Over Temperature : No
Charging Terminated : No
Over Charged : No
Relative State of Charge: 88 %
Charger System State: 49169
Charger System Ctrl: 0
Charging current: 512 mA
Absolute state of charge: 87 %
Max Error: 4 %
Exit Code: 0x00
출력 megacli -LDInfo -Lall -aAll
:
Adapter 0 -- Virtual Drive Information:
Virtual Drive: 0 (Target Id: 0)
Name :
RAID Level : Primary-1, Secondary-0, RAID Level Qualifier-0
Size : 111.281 GB
Sector Size : 512
Mirror Data : 111.281 GB
State : Optimal
Strip Size : 256 KB
Number Of Drives : 2
Span Depth : 1
Default Cache Policy: WriteBack, ReadAhead, Direct, No Write Cache if Bad BBU
Current Cache Policy: WriteBack, ReadAhead, Direct, No Write Cache if Bad BBU
Default Access Policy: Read/Write
Current Access Policy: Read/Write
Disk Cache Policy : Disk's Default
Encryption Type : None
Is VD Cached: No
Virtual Drive: 1 (Target Id: 1)
Name :
RAID Level : Primary-1, Secondary-0, RAID Level Qualifier-0
Size : 1.633 TB
Sector Size : 512
Mirror Data : 1.633 TB
State : Optimal
Strip Size : 256 KB
Number Of Drives per span:2
Span Depth : 6
Default Cache Policy: WriteBack, ReadAhead, Direct, Write Cache OK if Bad BBU
Current Cache Policy: WriteBack, ReadAhead, Direct, Write Cache OK if Bad BBU
Default Access Policy: Read/Write
Current Access Policy: Read/Write
Disk Cache Policy : Disk's Default
Encryption Type : None
Is VD Cached: No
업데이트 : Andrew의 조언 dd
에 따라 원시 디스크 읽기에서 어떤 종류의 처리량을 얻을 수 있는지 몇 분 동안 실행 했습니다.
dd if=/dev/sdb of=/dev/null bs=256k
19701+0 records in
19700+0 records out
5164236800 bytes (5.2 GB) copied, 202.553 s, 25.5 MB/s
처리량이 많은 다른 실행 결과 :
18706857984 bytes (19 GB) copied, 1181.51 s, 15.8 MB/s
20923023360 bytes (21 GB) copied, 388.137 s, 53.9 MB/s
21205876736 bytes (21 GB) copied, 55.5997 s, 381 MB/s
25391005696 bytes (25 GB) copied, 153.903 s, 165 MB/s
업데이트 2 : 출력 megacli -PDlist -aall
: https://gist.github.com/danpelota/3fca1e5f90a1f358c2d52a49bfb08ef0
megacli -PDlist -aall
출력 에서 세부 사항을 살펴 보았고 거기에서 분명히 잘못 된 것을 보지 못했지만 smartctl -a -d sat+megaraid,10 /dev/sdb
SMART 카운터를 검사하는 것은 IMHO의 가치가 있습니다 .SMART 경고는 거의 효과가 없었습니다. 먼저 smartctl --scan
, 그런 다음 부품을 건드리지 sat+megaraid,21
말고 교체하십시오 /dev/sda
. 나는 그런 식으로 사용 ServeRAID M5015 SAS/SATA Controller
했지만 같은 sh * t처럼 보입니다. 예를 들면 다음과 같습니다. pastebin.com/WYb8Utxr
smartctl
개별 디스크에서 실행 되었습니다. 비-중간 오류 수는 디스크 18에 대해 막대한 것 같습니다 : gist.github.com/danpelota/83b54854aa5af2e351ed71af5c8ebbf5
smartctl
은 내 것처럼 보이지 않습니다. 확실한 답변이 있습니다.
dd if=/dev/sdb of=/dev/null bs=256k
당신이 얻을 대역폭이 무엇을 참조하십시오. 백업에서 파일 시스템을 복원하지 않으려면 디스크 장치에 쓰지 마십시오 ...