1) Verificamos el enclosure y slot de los discos:

[root@localhost ~]# /opt/MegaRAID/MegaCli/MegaCli64 -PDlist -a0

Adapter #0

Enclosure Device ID: 252
Slot Number: 0
Enclosure position: 0
Device Id: 4
Sequence Number: 2
Media Error Count: 0
Other Error Count: 1
Predictive Failure Count: 0
Last Predictive Failure Event Seq Number: 0
PD Type: SATA
Raw Size: 111.790 GB [0xdf94bb0 Sectors]
Non Coerced Size: 111.290 GB [0xde94bb0 Sectors]
Coerced Size: 110.827 GB [0xdda7800 Sectors]
Firmware state: Online, Spun Up
SAS Address(0): 0x3d5648536a8b424c
Connected Port Number: 0(path0)
Inquiry Data: GS01103909280024 FM-25S2S-120GBP2

Enclosure Device ID: 252
Slot Number: 1
Enclosure position: 0
Device Id: 5
Sequence Number: 2
Media Error Count: 0
Other Error Count: 1
Predictive Failure Count: 0
Last Predictive Failure Event Seq Number: 0
PD Type: SATA
Raw Size: 111.790 GB [0xdf94bb0 Sectors]
Non Coerced Size: 111.290 GB [0xde94bb0 Sectors]
Coerced Size: 110.827 GB [0xdda7800 Sectors]
Firmware state: Online, Spun Up
SAS Address(0): 0x3d5647506b82414a
Connected Port Number: 1(path0)
Inquiry Data: GS03104110140009 FM-25S2S-120GBP2 2.1

Como se puede observar, son dos discos SSD de 120 gb…

2) Con el enclosure y slot number, lanzamos el comando de creacion de RAID 1 *

/opt/MegaRAID/MegaCli/MegaCli64 -CfgLdAdd -r1 [252:0,252:1] -a0

Adapter 1: Created VD 0

Adapter 1: Configured the Adapter!!

Exit Code: 0×00

* En este caso en concreto, es una simulacion, los discos que pongo arriba ya estan creados en RAID 1.

De esta manera ya tenemos nuestro RAID1 en este disco. Podemos personalizar un poco mas la configuracion del VD modificando algunos parametros tales como Read ahead, Write Cache, BBU etc.

Por ejemplo:

Habilitamos Read Cache en Logical volume 0 y adapter 0:

/opt/MegaRAID/MegaCli/MegaCli64 -LDSetProp -Cached -L0 -a0

Habilitamos Read Cache en todos los VD/LD y controladoras:

/opt/MegaRAID/MegaCli/MegaCli64 -LDSetProp -Cached -LAll -aAll

Set Cache Policy to Cached on Adapter 0, VD 0 (target id: 0) success

Habilitamos la cache en disco todos los VD y Controladoras:

/opt/MegaRAID/MegaCli/MegaCli64 -LDSetProp EnDskCache -LAll -aAll

Set Disk Cache Policy to Enabled on Adapter 0, VD 0 (target id: 0) success

Si queremos, podemos habilitarle Write Cache para mejorar el rendimiento. Es peligroso hacerlo, por lo que es aconsejable que tengamos una bateria en nuestra controladora:

[root@localhost ~]# /opt/MegaRAID/MegaCli/MegaCli64 -AdpBbuCmd -GetBbuStatus -a0

Adapter 0: Get BBU Status Failed.

Exit Code: 0×01

Ouch, en nuestro caso no tenemos una…

Lo habilitamos de igual manera:

[root@localhost ~]# /opt/MegaRAID/MegaCli/MegaCli64 -LDSetProp WB -LALL -aALL

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

Pensandolo bien, queremos quitarlo, nos arrepentimos…

[root@localhost ~]# /opt/MegaRAID/MegaCli/MegaCli64 -LDSetProp NoCachedBadBBU -LALL -aALL

Set No Write Cache if bad BBU on Adapter 0, VD 0 (target id: 0) success

Mostrar informacion de adaptadores y status:

[root@localhost ~]# /opt/MegaRAID/MegaCli/MegaCli64 -AdpAllInfo -aAll

Adapter #0

=================================================================== Versions
================
Product Name : MegaRAID SAS 8704EM2
Serial No : P488060910
FW Package Build: 9.0.1-0034

Image Versions in Flash:
================
FW Version : 1.20.32-0512
BIOS Version : 2.01.00
WebBIOS Version : 1.1-49-e_15-Rel
Ctrl-R Version : 1.02-012B
Preboot CLI Version: 01.00-021:#%00004
Boot Block Version : 1.00.00.01-0011
————————————————-

Mostrar el virtual drive/logical drive 0 en el adaptador 0:

[root@localhost ~]# /opt/MegaRAID/MegaCli/MegaCli64 -LDInfo -L0 -a0

Adapter 0 — Virtual Drive Information:
Virtual Drive: 0 (Target Id: 0)
Name :
RAID Level : Primary-1, Secondary-0, RAID Level Qualifier-0
Size : 110.827 GB
State : Optimal
Strip Size : 64 KB
Number Of Drives : 2
Span Depth : 1
Default Cache Policy: WriteThrough, ReadAheadNone, Direct, No Write Cache if Bad BBU
Current Cache Policy: WriteThrough, ReadAheadNone, Direct, No Write Cache if Bad BBU
Access Policy : Read/Write
Disk Cache Policy : Disk’s Default
Encryption Type : None

Mostrar como esta la funcion de autorebuild para los volumenes RAID que tengamos:

[root@localhost ~]# /opt/MegaRAID/MegaCli/MegaCli64 -AdpAutoRbld -Dsply -a0

Adapter 0: AutoRebuild is Enabled.

Habilitar autorebuild para los volumenes RAID que tengamos:

[root@localhost ~]# /opt/MegaRAID/MegaCli/MegaCli64 -Enbl -a0

Adapter 0: AutoRebuild is Enabled.

Deshabilitar autorebuild para los volumenes RAID que tengamos:

[root@localhost ~]# /opt/MegaRAID/MegaCli/MegaCli64 -AdpAutoRbld -Dsbl -a0

Adapter 0: AutoRebuild is Disabled.

Mostrar los dispositivos fisicos (discos) que tenemos conectados a la primera controladora que tengamos:

[root@localhost ~]# /opt/MegaRAID/MegaCli/MegaCli64 -PDList -a0

Adapter #0

Enclosure Device ID: 252
Slot Number: 0
Enclosure position: 0
Device Id: 4
Sequence Number: 2
Media Error Count: 0
Other Error Count: 0
Predictive Failure Count: 0
Last Predictive Failure Event Seq Number: 0
PD Type: SATA
Raw Size: 111.790 GB [0xdf94bb0 Sectors]
Non Coerced Size: 111.290 GB [0xde94bb0 Sectors]
Coerced Size: 110.827 GB [0xdda7800 Sectors]
Firmware state: Online, Spun Up
SAS Address(0): 0x3d5648536a8b424c
Connected Port Number: 0(path0)
Inquiry Data: GS01103909280024 FM-25S2S-120GBP2 2.1
FDE Capable: Not Capable
FDE Enable: Disable
Secured: Unsecured
Locked: Unlocked
Needs EKM Attention: No
Foreign State: None
Device Speed: 3.0Gb/s
Link Speed: 3.0Gb/s
Media Type: Hard Disk Device
Drive Temperature :0C (32.00 F)

Enclosure Device ID: 252
Slot Number: 1
Enclosure position: 0
Device Id: 5
Sequence Number: 2
Media Error Count: 0
Other Error Count: 0
Predictive Failure Count: 0
Last Predictive Failure Event Seq Number: 0
PD Type: SATA
Raw Size: 111.790 GB [0xdf94bb0 Sectors]
Non Coerced Size: 111.290 GB [0xde94bb0 Sectors]
Coerced Size: 110.827 GB [0xdda7800 Sectors]
Firmware state: Online, Spun Up
SAS Address(0): 0x3d5647506b82414a
Connected Port Number: 1(path0)
Inquiry Data: GS03104110140009 FM-25S2S-120GBP2 2.1
FDE Capable: Not Capable
FDE Enable: Disable
Secured: Unsecured
Locked: Unlocked
Needs EKM Attention: No
Foreign State: None
Device Speed: 3.0Gb/s
Link Speed: 3.0Gb/s
Media Type: Hard Disk Device
Drive Temperature :0C (32.00 F)

Enclosure Device ID: 252
Slot Number: 2
Enclosure position: 0
Device Id: 6
Sequence Number: 2
Media Error Count: 0
Other Error Count: 0
Predictive Failure Count: 0
Last Predictive Failure Event Seq Number: 0
PD Type: SATA
Raw Size: 1.819 TB [0xe8e088b0 Sectors]
Non Coerced Size: 1.818 TB [0xe8d088b0 Sectors]
Coerced Size: 1.817 TB [0xe8b6d000 Sectors]
Firmware state: Online, Spun Up
SAS Address(0): 0x81709e2e88d6feb1
Connected Port Number: 2(path0)
Inquiry Data: JK1171YBJ07VSFHitachi HDS722020ALA330 JKAOA28A
FDE Capable: Not Capable
FDE Enable: Disable
Secured: Unsecured
Locked: Unlocked
Needs EKM Attention: No
Foreign State: None
Device Speed: 3.0Gb/s
Link Speed: 3.0Gb/s
Media Type: Hard Disk Device
Drive Temperature :0C (32.00 F)

Enclosure Device ID: 252
Slot Number: 3
Enclosure position: 0
Device Id: 7
Sequence Number: 2
Media Error Count: 0
Other Error Count: 0
Predictive Failure Count: 0
Last Predictive Failure Event Seq Number: 0
PD Type: SATA
Raw Size: 1.819 TB [0xe8e088b0 Sectors]
Non Coerced Size: 1.818 TB [0xe8d088b0 Sectors]
Coerced Size: 1.817 TB [0xe8b6d000 Sectors]
Firmware state: Online, Spun Up
SAS Address(0): 0x81709e2e88d5f7b1
Connected Port Number: 3(path0)
Inquiry Data: JK1171YBJ07ULFHitachi HDS722020ALA330 JKAOA28A
FDE Capable: Not Capable
FDE Enable: Disable
Secured: Unsecured
Locked: Unlocked
Needs EKM Attention: No
Foreign State: None
Device Speed: 3.0Gb/s
Link Speed: 3.0Gb/s
Media Type: Hard Disk Device
Drive Temperature :0C (32.00 F)

En el proximo post mas informacion de como crear un RAID o hacer un autorebuild desde la utilidad Megacli sin tener que reiniciar para entrar en la Web GUI de LSI.

Enumero algunas de ellas:

LSHW

Esta fantastica utilidad nos permite tener un reporte detallado de nuestro hardware en sistemas con soporte DMI(SMBIOS).

Instalación

DEBIAN/Ubuntu # apt-get install lshw (como root, si no fuesemos root, usariamos sudo apt-get install lshw.
Derivados de Redhat # yum install lshw

Si no esta en el repositorio oficial, siempre podemos usar el de DAG

USO

# lshw

BIOSDECODE

BiosDecode es una herramienta que permite analizar la memoria de la BIOS para imprimir todas las estructuras (o puntos de entrada) conocidos.

Ejemplo:

- SMBIOS (System Management BIOS)
- DMI (Desktop Management Interface, a legacy version of SMBIOS)
- SYSID
- PNP (Plug and Play)
- ACPI (Advanced Configuration and Power Interface)
- BIOS32 (BIOS32 Service Directory)
- PIR (PCI IRQ Routing)
- 32OS (BIOS32 Extension, Compaq-specific)
- VPD (Vital Product Data, IBM-specific)
- FJKEYINF (Application Panel, Fujitsu-specific)

* Las tablas DMI no solo muestran la información actual del hardware, si no que es posible conocer cuales son los limites de CPU, memoria etc.

DMIDECODE

Todo esto esta muy bien, pero BiosDecode no es “human-readable” por lo que necesitamos otra herramienta que nos facilite la información en un formato legible. Aquí es donde entra en liza dmidecode. Esta herramienta permite volcar una tabla DMI a la pantalla, mostrando números de serie, revision de la BIOS, descripción del hardware etc.

USO

# dmidecode –type palabra/número

Ejemplo con palabras:

dmidecode –type processor

Ejemplo con números

dmidecode –type 39 (powersupply)

Tabla de tipos DMI:

# Type Short Description
0 BIOS
1 System
2 Base Board
3 Chassis
4 Processor
5 Memory Controller
6 Memory Module
7 Cache
8 Port Connector
9 System Slots
10 On Board Devices
11 OEM Strings
12 System Configuration Options
13 BIOS Language
14 Group Associations
15 System Event Log
16 Physical Memory Array
17 Memory Device
18 32-bit Memory Error
19 Memory Array Mapped Address
20 Memory Device Mapped Address
21 Built-in Pointing Device
22 Portable Battery
23 System Reset
24 Hardware Security
25 System Power Controls
26 Voltage Probe
27 Cooling Device
28 Temperature Probe
29 Electrical Current Probe
30 Out-of-band Remote Access
31 Boot Integrity Services
32 System Boot
33 64-bit Memory Error
34 Management Device
35 Management Device Component
36 Management Device Threshold Data
37 Memory Channel
38 IPMI Device
39 Power Supply

Para todo lo demas man dmidecode