문서의 이전 판입니다!
참조링크 : https://access.redhat.com/solutions/894163
iSCSI
iSCSI Target_RHEL 6
테스트환경
* HOST OS : CentOS 6.6 64bit
* GUEST OS : CentOS 6.6 64bit
tgt-setup-lun
tgt-setup-lun : target 을 생성하고 target 을 장치에 추가해 주는 Script 명령어 입니다.
해당 명령어로 실행시 간단하게 iSCSI Target 을 생성 관리 할수 있습니다.
Step.1 iSCSI Target 설치
[root@iscsi ~]# yum install scsi-target-utils.x86_64 -y
[root@iscsi ~]# rpm -qa | grep scsi-target-utils scsi-target-utils-1.0.24-16.el6.x86_64
Step.2 iSCSI Target 서비스 실행
[root@iscsi ~]# service tgtd start [root@iscsi ~]# service tgtd status [root@iscsi ~]# chkconfig tgtd on
Step.3 iSCSI Target 생성
* 디스크 생성 및 LVM 구성은 이곳에서 따로 보여주지 않는다.
* tgt-setup-lun 스크립트 명령어로 아래와 같이 생성해 준다.
[root@iscsi ~]# tgt-setup-lun -d /dev/mapper/VG_DISK1-LV_Disk1 -n iSCSI_Target1 [root@iscsi ~]# tgt-setup-lun -d /dev/mapper/VG_DISK2-LV_Disk2 -n iSCSI_Target2 [root@iscsi ~]# tgt-setup-lun -d /dev/mapper/VG_DISK3-LV_Disk3 -n iSCSI_Target3 [root@iscsi ~]# tgt-setup-lun -d /dev/mapper/VG_DISK4-LV_Disk4 -n iSCSI_Target4
* 생성된 파일을 targets.conf 파일에 입력하기
[root@iscsi ~]#tgt-admin --dump | grep -v default-driver > target.conf [root@iscsi ~]#vim target.conf <target iqn.2001-04.com.iscsi-iSCSI_Target3> // iqn 이름을 현재 날짜 또는 원하는 이름으로 변경한다. backing-store /dev/mapper/VG_DISK3-LV_Disk3 </target> <target iqn.2001-04.com.iscsi-iSCSI_Target1> backing-store /dev/mapper/VG_DISK1-LV_Disk1 </target> <target iqn.2001-04.com.iscsi-iSCSI_Target4> backing-store /dev/mapper/VG_DISK4-LV_Disk4 </target> <target iqn.2001-04.com.iscsi-iSCSI_Target2> backing-store /dev/mapper/VG_DISK2-LV_Disk2 </target> [root@iscsi ~]#
* tgtd 데몬 재 시작
[root@iscsi ~]# service tgtd restart
* Target 확인
[root@iscsi ~]# tgt-admin -s
Target 1: iqn.2015-04.com.iscsi-iSCSI_Target1
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
Prevent removal: 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: 32216 MB, Block size: 512
Online: Yes
Removable media: No
Prevent removal: No
Readonly: No
Backing store type: rdwr
Backing store path: /dev/mapper/VG_DISK1-LV_Disk1
Backing store flags:
Account information:
ACL information:
ALL
Target 2: iqn.2015-04.com.iscsi-iSCSI_Target2
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
Prevent removal: 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: 10737 MB, Block size: 512
Online: Yes
Removable media: No
Prevent removal: No
Readonly: No
Backing store type: rdwr
Backing store path: /dev/mapper/VG_DISK2-LV_Disk2
Backing store flags:
Account information:
ACL information:
ALL
Target 3: iqn.2015-04.com.iscsi-iSCSI_Target3
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
Prevent removal: 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: 5377 MB, Block size: 512
Online: Yes
Removable media: No
Prevent removal: No
Readonly: No
Backing store type: rdwr
Backing store path: /dev/mapper/VG_DISK3-LV_Disk3
Backing store flags:
Account information:
ACL information:
ALL
Target 4: iqn.2015-04.com.iscsi-iSCSI_Target4
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
Prevent removal: 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: 5344 MB, Block size: 512
Online: Yes
Removable media: No
Prevent removal: No
Readonly: No
Backing store type: rdwr
Backing store path: /dev/mapper/VG_DISK4-LV_Disk4
Backing store flags:
Account information:
ACL information:
ALL
* target 제거
tgt-admin --delete ALL // 모든 타겟을 지운다. tgt-admin --delete tid=4 // 타겟4번을 지운다. tgt-admin --delete iqn.2015-04.com // 해당 iqn.2015-04.com 타겟을 지운다.
iSCSI Target_RHEL 7
테스트환경
* HOST OS : CentOS Linux release 7
* GUEST OS : CentOS Linux release 7
targetcli
targetcli 는 트리 기반의 파일 시스템과 유사한 방식으로 탐색한다
targetcli 는 커널의 대상 서스 시스템을 구성하고 저장하기 위한 쉘 스크립트 이다
Step1. Install and run targetcli
이 문서에서는 공유 디스크로 생성한 LVM 볼륨 구성은 작성하지 않았습니다
현재 등록되어 있는 디스크 정보들을 확인한다
[root@server1 ~]# fdisk -l | grep Disk Disk /dev/sda: 32.2 GB, 32212254720 bytes, 62914560 sectors Disk /dev/sdb: 53.7 GB, 53687091200 bytes, 104857600 sectors // ISCSI 구성을 위해 신규 추가된 디스크 Disk /dev/mapper/centos-swap: 2164 MB, 2164260864 bytes, 4227072 sectors Disk /dev/mapper/centos-root: 29.5 GB, 29519511552 bytes, 57655296 sectors
[root@server1 ~]# vgs VG #PV #LV #SN Attr VSize VFree VG_iscsi_Disk1 1 1 0 wz--n- 1020.00m 0 VG_iscsi_Disk2 1 1 0 wz--n- 10.00g 0 centos 1 2 0 wz--n- 29.51g 0 [root@server1 ~]# lvs LV VG Attr LSize Pool Origin Data% Move Log Cpy%Sync Convert lv_iscsi_Disk1 VG_iscsi_Disk1 -wi-a----- 1020.00m lv_iscsi_Disk2 VG_iscsi_Disk2 -wi-a----- 10.00g root centos -wi-ao---- 27.49g swap centos -wi-ao---- 2.02g
targetcli 설치 및 확인 :
# yum install targetcli
# targetcli --version /usr/bin/targetcli version 2.1.fb37
* target service 구동 :
# systemctl start target
targetcli 명령어로 쉘 스크립트 실행
[root@server1 ~]# targetcli targetcli shell version 2.1.fb37 Copyright 2011-2013 by Datera, Inc and others. For help on commands, type 'help'. /> ls o- / ......................................................................................................................... [...] o- backstores .............................................................................................................. [...] | o- block .................................................................................................. [Storage Objects: 0] | o- fileio ................................................................................................. [Storage Objects: 0] | o- pscsi .................................................................................................. [Storage Objects: 0] | o- ramdisk ................................................................................................ [Storage Objects: 0] o- iscsi ............................................................................................................ [Targets: 0] o- loopback ......................................................................................................... [Targets: 0] />
backstores 구성
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