[Инсталляция Oracle RAC 11.2 в операционной системе Oracle Linux 5.8 x86_64]: Инсталляция ISCSI и монтирование iscsi дисков

iSCSI target — программа или контроллер, осуществляющие эмуляцию диска и выполняющие запросы iSCSI.
iSCSI initiator — программа, осуществляющая клиентский доступ к SCSI.

Инсталляция iSCSI target

Server:

storage

================== OFFTOPIC BEGIN =================

ASM не поддерживает устройства более 2097152 MBs.
Если устройство больше, можно воспользоваться parted.

# parted
select /dev/sdb
print
mklabel gpt

mkpart primary 0 1799GB
mkpart primary 1799GB 100%

parted -l

К чему я это написал? Просто если нужно разбить диск на меньший, лучше подумать об этом заранее.

================== OFFTOPIC END =================

# yum install -y scsi-target-utils

# ls /dev/sd*

/dev/sda   /dev/sda2  /dev/sdc  /dev/sde  /dev/sdg
/dev/sda1  /dev/sdb   /dev/sdd  /dev/sdf  /dev/sdh

# fdisk /dev/sdb
# fdisk /dev/sdc
# fdisk /dev/sdd
# fdisk /dev/sde
# fdisk /dev/sdf
# fdisk /dev/sdg
# fdisk /dev/sdh

# ls /dev/sd*

/dev/sda   /dev/sdb   /dev/sdc1  /dev/sde   /dev/sdf1  /dev/sdh
/dev/sda1  /dev/sdb1  /dev/sdd   /dev/sde1  /dev/sdg   /dev/sdh1
/dev/sda2  /dev/sdc   /dev/sdd1  /dev/sdf   /dev/sdg1

# vi /etc/tgt/targets.conf

Обязательно должна быть разкомментирована строка: default-driver iscsi

<target ru.oracle-dba:disk1>
        backing-store /dev/sdb1
        initiator-address 192.168.3.11
        initiator-address 192.168.3.12
</target>
<target ru.oracle-dba:disk2>
        backing-store /dev/sdc1
        initiator-address 192.168.3.11
        initiator-address 192.168.3.12
</target>
<target ru.oracle-dba:disk3>
        backing-store /dev/sdd1
        initiator-address 192.168.3.11
        initiator-address 192.168.3.12
</target>
<target ru.oracle-dba:disk4>
        backing-store /dev/sde1
        initiator-address 192.168.3.11
        initiator-address 192.168.3.12
</target>
<target ru.oracle-dba:disk5>
        backing-store /dev/sdf1
        initiator-address 192.168.3.11
        initiator-address 192.168.3.12
</target>
<target ru.oracle-dba:disk6>
        backing-store /dev/sdg1
        initiator-address 192.168.3.11
        initiator-address 192.168.3.12
</target>
<target ru.oracle-dba:disk7>
        backing-store /dev/sdh1
        initiator-address 192.168.3.11
        initiator-address 192.168.3.12
</target>

# service tgtd start

Посмотреть результаты:

# tgt-admin --show

Target 1: ru.oracle-dba:disk1
    System information:
        Driver: iscsi
        State: ready
    I_T nexus information:
    LUN information:
        LUN: 0
            Type: controller
            SCSI ID: IET     00010000
            SCSI SN: beaf10
            Size: 0 MB, Block size: 1
            Online: Yes
            Removable media: No
            Readonly: No
            Backing store type: null
            Backing store path: None
            Backing store flags:
        LUN: 1
            Type: disk
            SCSI ID: IET     00010001
            SCSI SN: beaf11
            Size: 42944 MB, Block size: 512
            Online: Yes
            Removable media: No
            Readonly: No
            Backing store type: rdwr
            Backing store path: /dev/sdb1
            Backing store flags:
    Account information:
    ACL information:
        192.168.3.11
        192.168.3.12
Target 2: ru.oracle-dba:disk2
    System information:
        Driver: iscsi
        State: ready
    I_T nexus information:
    LUN information:
        LUN: 0
            Type: controller
            SCSI ID: IET     00020000
            SCSI SN: beaf20
            Size: 0 MB, Block size: 1
            Online: Yes
            Removable media: No
            Readonly: No
            Backing store type: null
            Backing store path: None
            Backing store flags:
        LUN: 1
            Type: disk
            SCSI ID: IET     00020001
            SCSI SN: beaf21
            Size: 42944 MB, Block size: 512
            Online: Yes
            Removable media: No
            Readonly: No
            Backing store type: rdwr
            Backing store path: /dev/sdc1
            Backing store flags:
    Account information:
    ACL information:
        192.168.3.11
        192.168.3.12
Target 3: ru.oracle-dba:disk3
    System information:
        Driver: iscsi
        State: ready
    I_T nexus information:
    LUN information:
        LUN: 0
            Type: controller
            SCSI ID: IET     00030000
            SCSI SN: beaf30
            Size: 0 MB, Block size: 1
            Online: Yes
            Removable media: No
            Readonly: No
            Backing store type: null
            Backing store path: None
            Backing store flags:
        LUN: 1
            Type: disk
            SCSI ID: IET     00030001
            SCSI SN: beaf31
            Size: 42944 MB, Block size: 512
            Online: Yes
            Removable media: No
            Readonly: No
            Backing store type: rdwr
            Backing store path: /dev/sdd1
            Backing store flags:
    Account information:
    ACL information:
        192.168.3.11
        192.168.3.12
Target 4: ru.oracle-dba:disk4
    System information:
        Driver: iscsi
        State: ready
    I_T nexus information:
    LUN information:
        LUN: 0
            Type: controller
            SCSI ID: IET     00040000
            SCSI SN: beaf40
            Size: 0 MB, Block size: 1
            Online: Yes
            Removable media: No
            Readonly: No
            Backing store type: null
            Backing store path: None
            Backing store flags:
        LUN: 1
            Type: disk
            SCSI ID: IET     00040001
            SCSI SN: beaf41
            Size: 42944 MB, Block size: 512
            Online: Yes
            Removable media: No
            Readonly: No
            Backing store type: rdwr
            Backing store path: /dev/sde1
            Backing store flags:
    Account information:
    ACL information:
        192.168.3.11
        192.168.3.12
Target 5: ru.oracle-dba:disk5
    System information:
        Driver: iscsi
        State: ready
    I_T nexus information:
    LUN information:
        LUN: 0
            Type: controller
            SCSI ID: IET     00050000
            SCSI SN: beaf50
            Size: 0 MB, Block size: 1
            Online: Yes
            Removable media: No
            Readonly: No
            Backing store type: null
            Backing store path: None
            Backing store flags:
        LUN: 1
            Type: disk
            SCSI ID: IET     00050001
            SCSI SN: beaf51
            Size: 42944 MB, Block size: 512
            Online: Yes
            Removable media: No
            Readonly: No
            Backing store type: rdwr
            Backing store path: /dev/sdf1
            Backing store flags:
    Account information:
    ACL information:
        192.168.3.11
        192.168.3.12
Target 6: ru.oracle-dba:disk6
    System information:
        Driver: iscsi
        State: ready
    I_T nexus information:
    LUN information:
        LUN: 0
            Type: controller
            SCSI ID: IET     00060000
            SCSI SN: beaf60
            Size: 0 MB, Block size: 1
            Online: Yes
            Removable media: No
            Readonly: No
            Backing store type: null
            Backing store path: None
            Backing store flags:
        LUN: 1
            Type: disk
            SCSI ID: IET     00060001
            SCSI SN: beaf61
            Size: 42944 MB, Block size: 512
            Online: Yes
            Removable media: No
            Readonly: No
            Backing store type: rdwr
            Backing store path: /dev/sdg1
            Backing store flags:
    Account information:
    ACL information:
        192.168.3.11
        192.168.3.12
Target 7: ru.oracle-dba:disk7
    System information:
        Driver: iscsi
        State: ready
    I_T nexus information:
    LUN information:
        LUN: 0
            Type: controller
            SCSI ID: IET     00070000
            SCSI SN: beaf70
            Size: 0 MB, Block size: 1
            Online: Yes
            Removable media: No
            Readonly: No
            Backing store type: null
            Backing store path: None
            Backing store flags:
        LUN: 1
            Type: disk
            SCSI ID: IET     00070001
            SCSI SN: beaf71
            Size: 42944 MB, Block size: 512
            Online: Yes
            Removable media: No
            Readonly: No
            Backing store type: rdwr
            Backing store path: /dev/sdh1
            Backing store flags:
    Account information:
    ACL information:
        192.168.3.11
        192.168.3.12

# chkconfig --level 345 tgtd on

Настройка правил UDEV, для определения правил присваивания имен импортируемым дискам.

Server:

node1, node2

При задании имен, иногда возникала ошибка.

oracleasm-read-label: Unable to open device "/dev/sdb": No such file or directory

Попробуйте настроить правила, подобным образом, что и в инструкции для Oracle 12C. http://oracle-dba.ru/database/installation/distributed/rac/linux/6.7/oracle/12.1/iscsi-asm/mount-iscsi-on-nodes/

Подключение экспортированных дисков к узлам кластера

Server:

node1, node2

# yum install -y iscsi-initiator-utils.x86_64

# service iscsid start

// Получить список экспортированных дисков с storage:

# iscsiadm -m discovery -t sendtargets -p 192.168.3.15:3260

# service iscsi restart

# chkconfig --level 345 iscsi on
# chkconfig --level 345 iscsid on

Посмотреть перед тем как использовать:
http://www.oracle-base.com/articles/linux/udev-scsi-rules-configuration-in-oracle-linux-5-and-6.php