Linux. Disk. Configure iSCSI target & iSCSI Initiator in Redhat Linux 7

Linux. Disk. Configure iSCSI target & iSCSI Initiator in Redhat Linux 7

--Просмотреть нужный для блокирования диск 

fdisk -l | grep Disk

Disk /dev/sda: 25.5 TiB, 27999998050304 bytes, 54687496192 sectors
Disk /dev/sdb: 7.4 GiB, 7902068736 bytes, 15433728 sectors
Disklabel type: dos
Disk identifier: 0xe722ba24
Disk /dev/mapper/fedora--server_backup01-root: 7.4 GiB, 7897874432 bytes, 154255

--Мне нужен диск Disk /dev/sda

--Создадим физический том 
pvcreate /dev/sda

--Создадим группу томов с именем vgiscsi
vgcreate vgiscsi /dev/sda

--Создадим раздел максимального размера с именем lviscsi
lvcreate -l 100%FREE -n lviscsi vgiscsi

--Установим targetctl для управления и конфир=гурирования iscsi
yum install targetctl

-------------------НАСТРОЙКА iscsi-------
переход в консоль targetctl

в ней переход через cd в раздел block

1)Создадим диск, который будет блокирвоан для isci с названием disk1
create name=disk1 dev=/dev/vgiscsi/lviscsi

o- backstores ................................................................................................................ [...]
  o- block .................................................................................................... [Storage Objects: 1]
  | o- disk1 ............................................................... [/dev/vgiscsi/lviscsi (25.5TiB) write-thru deactivated]
  o- fileio ................................................................................................... [Storage Objects: 0]
  o- pscsi .................................................................................................... [Storage Objects: 0]
  o- ramdisk .................................................................................................. [Storage Objects: 0]
  o- user ..................................................................................................... [Storage Objects: 0]


Аналогино можно можно создать и заблокировать файл для iscsi

2) Переходим на уровень выше backstores
/backstores> cd ..
/> ls
o- / ......................................................................................................................... [...]
  o- backstores .............................................................................................................. [...]
  | o- block .................................................................................................. [Storage Objects: 1]
  | | o- disk1 ............................................................. [/dev/vgiscsi/lviscsi (25.5TiB) write-thru deactivated]
  | o- fileio ................................................................................................. [Storage Objects: 0]
  | o- pscsi .................................................................................................. [Storage Objects: 0]
  | o- ramdisk ................................................................................................ [Storage Objects: 0]
  | o- user ................................................................................................... [Storage Objects: 0]
  o- iscsi ............................................................................................................ [Targets: 0]
  o- loopback ......................................................................................................... [Targets: 0]
  o- vhost ............................................................................................................ [Targets: 0]

3) входим в раздел iscsi и созадем target name
create iqn.2015-02.local.gau:backup01

/iscsi> ls
o- iscsi .............................................................................................................. [Targets: 1]
  o- iqn.2015-02.local.gau:backup01 ...................................................................................... [TPGs: 1]
    o- tpg1 ................................................................................................. [no-gen-acls, no-auth]
      o- acls ............................................................................................................ [ACLs: 0]
      o- luns ............................................................................................................ [LUNs: 0]
      o- portals ...................................................................................................... [Portals: 1]
        o- 0.0.0.0:3260 ....................................................................................................... [OK]

4) Входим в раздел luns и создаем LUN который будут доступ для всех кто попропросит 

create /backstores/block/disk1

5) Входим в раздел portals
Удоляем порртал по умолчанию
delete ip_address=0.0.0.0 ip_port=3260

и добавлем адреса интерфейсов с которых будет доступен LUN
create 10.5.1.101 ip_port=3260
create 10.5.1.201 ip_port=3260

/> ls
o- / ......................................................................................................................... [...]
  o- backstores .............................................................................................................. [...]
  | o- block .................................................................................................. [Storage Objects: 1]
  | | o- disk1 ............................................................... [/dev/vgiscsi/lviscsi (25.5TiB) write-thru activated]
  | o- fileio ................................................................................................. [Storage Objects: 0]
  | o- pscsi .................................................................................................. [Storage Objects: 0]
  | o- ramdisk ................................................................................................ [Storage Objects: 0]
  | o- user ................................................................................................... [Storage Objects: 0]
  o- iscsi ............................................................................................................ [Targets: 1]
  | o- iqn.2015-02.local.gau:backup01 .................................................................................... [TPGs: 1]
  |   o- tpg1 ............................................................................................... [no-gen-acls, no-auth]
  |     o- acls .......................................................................................................... [ACLs: 0]
  |     o- luns .......................................................................................................... [LUNs: 1]
  |     | o- lun0 ............................................................................. [block/disk1 (/dev/vgiscsi/lviscsi)]
  |     o- portals .................................................................................................... [Portals: 2]
  |       o- 10.5.1.101:3260 .................................................................................................. [OK]
  |       o- 10.5.1.201:3260 .................................................................................................. [OK]
  o- loopback ......................................................................................................... [Targets: 0]
  o- vhost ............................................................................................................ [Targets: 0]
  
  
6) добавляем разрешение для Firewall ан порт 3260./tcp
7) активируем службы target для автозапуска 
systemctl enable target.service