wiki:filesystem:targetcli
Table of Contents
Linux IO target (LIO)
Cenário:
- 192.0.2.252 - storage: Storage rodando no CentOS 7
- 192.0.2.14 - centos7: Cliente rodndo no CentOS 7
Preparando o disco com lvm
root@storage:~# fdisk -l /dev/sdb Disk /dev/sdb: 10.7 GB, 10737418240 bytes, 20971520 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes
root@storage:~# pvcreate /dev/sdb Physical volume "/dev/sdb" successfully created
root@storage:~# vgcreate vg_storage /dev/sdb Volume group "vg_storage" successfully created
root@storage:~# lvcreate -L 2G -n lv_volume01 vg_storage Logical volume "lv_volume01" created. root@storage:~# lvcreate -L 2G -n lv_volume02 vg_storage Logical volume "lv_volume02" created.
Instalação
root@storage:~# yum install targetcli -y
root@storage:~# rpm -qil targetcli Name : targetcli Version : 2.1.fb41 Release : 3.el7 Architecture: noarch Install Date: Ter 02 Fev 2016 19:31:45 BRT Group : System Environment/Libraries Size : 214175 License : ASL 2.0 Signature : RSA/SHA256, Qua 25 Nov 2015 12:43:06 BRT, Key ID 24c6a8a7f4a80eb5 Source RPM : targetcli-2.1.fb41-3.el7.src.rpm Build Date : Sex 20 Nov 2015 05:33:33 BRT Build Host : worker1.bsys.centos.org Relocations : (not relocatable) Packager : CentOS BuildSystem <http://bugs.centos.org> Vendor : CentOS URL : https://fedorahosted.org/targetcli-fb/ Summary : An administration shell for storage targets Description : An administration shell for configuring iSCSI, FCoE, and other SCSI targets, using the TCM/LIO kernel target subsystem. FCoE users will also need to install and use fcoe-utils. /etc/target /etc/target/backup /usr/bin/targetcli /usr/lib/python2.7/site-packages/targetcli /usr/lib/python2.7/site-packages/targetcli/__init__.py /usr/lib/python2.7/site-packages/targetcli/__init__.pyc /usr/lib/python2.7/site-packages/targetcli/__init__.pyo /usr/lib/python2.7/site-packages/targetcli/ui_backstore.py /usr/lib/python2.7/site-packages/targetcli/ui_backstore.pyc /usr/lib/python2.7/site-packages/targetcli/ui_backstore.pyo /usr/lib/python2.7/site-packages/targetcli/ui_node.py /usr/lib/python2.7/site-packages/targetcli/ui_node.pyc /usr/lib/python2.7/site-packages/targetcli/ui_node.pyo /usr/lib/python2.7/site-packages/targetcli/ui_root.py /usr/lib/python2.7/site-packages/targetcli/ui_root.pyc /usr/lib/python2.7/site-packages/targetcli/ui_root.pyo /usr/lib/python2.7/site-packages/targetcli/ui_target.py /usr/lib/python2.7/site-packages/targetcli/ui_target.pyc /usr/lib/python2.7/site-packages/targetcli/ui_target.pyo /usr/lib/python2.7/site-packages/targetcli/version.py /usr/lib/python2.7/site-packages/targetcli/version.pyc /usr/lib/python2.7/site-packages/targetcli/version.pyo /usr/lib/python2.7/site-packages/targetcli_fb-2.1.fb41-py2.7.egg-info /usr/lib/python2.7/site-packages/targetcli_fb-2.1.fb41-py2.7.egg-info/PKG-INFO /usr/lib/python2.7/site-packages/targetcli_fb-2.1.fb41-py2.7.egg-info/SOURCES.txt /usr/lib/python2.7/site-packages/targetcli_fb-2.1.fb41-py2.7.egg-info/dependency_links.txt /usr/lib/python2.7/site-packages/targetcli_fb-2.1.fb41-py2.7.egg-info/top_level.txt /usr/share/doc/targetcli-2.1.fb41 /usr/share/doc/targetcli-2.1.fb41/COPYING /usr/share/doc/targetcli-2.1.fb41/README.md /usr/share/man/man8/targetcli.8.gz
Configurando
Para limpar configurações existentes execute
root@storage:~# targetcli clearconfig confirm=true Warning: Could not load preferences file /root/.targetcli/prefs.bin. All configuration cleared
Acessando a linha de comando
root@storage:~# targetcli targetcli shell version 2.1.fb41 Copyright 2011-2013 by Datera, Inc and others. For help on commands, type 'help'. /> help GENERALITIES ============ This is a shell in which you can create, delete and configure configuration objects. The available commands depend on the current path or target path you want to run a command in: different path have different sets of available commands, i.e. a path pointing at an iscsi target will not have the same availaible commands as, say, a path pointing at a storage object. The prompt that starts each command line indicates your current path. Alternatively (useful if the prompt displays an abbreviated path to save space), you can run the pwd command to display the complete current path. Navigating the tree is done using the cd command. Without any argument, cd will present you wil the full objects tree. Just use arrows to select the destination path, and enter will get you there. Please try help cd for navigation tips. COMMAND SYNTAX ============== Commands are built using the following syntax: [TARGET_PATH] COMMAND_NAME [OPTIONS] The TARGET_PATH indicates the path to run the command from. If ommited, the command will be run from your current path. The OPTIONS depend on the command. Please use help COMMAND to get more information. AVAILABLE COMMANDS ================== The following commands are available in the current path: - bookmarks action [bookmark] - cd [path] - clearconfig [confirm] - exit - get [group] [parameter...] - help [topic] - ls [path] [depth] - pwd - refresh - restoreconfig [savefile] [clear_existing] - saveconfig [savefile] - sessions [action] [sid] - set [group] [parameter=value...] - status - version />
Criando os blocks sobre os volumes
/> /backstores/block create volume01 /dev/vg_storage/lv_volume01 Created block storage object volume01 using /dev/vg_storage/lv_volume01. /> /backstores/block create volume02 /dev/vg_storage/lv_volume02 Created block storage object volume02 using /dev/vg_storage/lv_volume02. />
Desabilitar a autenticação
/> iscsi/ set discovery_auth enable=0 Parameter enable is now 'False'. />
Criando o target
/> iscsi/ create iqn.2016-02.org.exemplo:target-01 Created target iqn.2016-02.org.exemplo:target-01. Created TPG 1. Global pref auto_add_default_portal=true Created default portal listening on all IPs (0.0.0.0), port 3260. />
Criando portal
Se quisermos especificar o IP para o portal precisamos primeiro deletar o que foi criado automaticamente quando criamos o target
/> iscsi/iqn.2016-02.org.exemplo:target-01/tpg1/portals/ delete ip_address=0.0.0.0 ip_port=3260 Deleted network portal 0.0.0.0:3260
Agora vamos criar
/> iscsi/iqn.2016-02.org.exemplo:target-01/tpg1/portals/ create ip_address=192.0.2.14 ip_port=3260 Using default IP port 3260 Created network portal 192.0.2.14:3260. /> iscsi/iqn.2016-02.org.exemplo:target-01/tpg1/portals/ create ip_address=192.0.2.252 ip_port=3260 Using default IP port 3260 Created network portal 192.0.2.252:3260. />
Criando as LUNs
/> iscsi/iqn.2016-02.org.exemplo:target-01/tpg1/luns create /backstores/block/volume01 Created LUN 0. /> iscsi/iqn.2016-02.org.exemplo:target-01/tpg1/luns create /backstores/block/volume02 Created LUN 1. />
Criando as ACLs
/> iscsi/iqn.2016-02.org.exemplo:target-01/tpg1/acls create iqn.2016-02.org.exemplo:cliente01 Created Node ACL for iqn.2016-02.org.exemplo:cliente01 Created mapped LUN 1. Created mapped LUN 0. /> iscsi/iqn.2016-02.org.exemplo:target-01/tpg1/acls create iqn.2016-02.org.exemplo:cliente02 Created Node ACL for iqn.2016-02.org.exemplo:cliente02 Created mapped LUN 1. Created mapped LUN 0. />
Salvando as configurações
/> saveconfig Last 10 configs saved in /etc/target/backup. Configuration saved to /etc/target/saveconfig.json />
Listando a configuração salva
/> ls o- / ............................................................................................ [...] o- backstores ................................................................................. [...] | o- block ..................................................................... [Storage Objects: 2] | | o- volume01 ......................... [/dev/vg_storage/lv_volume01 (2.0GiB) write-thru activated] | | o- volume02 ......................... [/dev/vg_storage/lv_volume02 (2.0GiB) write-thru activated] | o- fileio .................................................................... [Storage Objects: 0] | o- pscsi ..................................................................... [Storage Objects: 0] | o- ramdisk ................................................................... [Storage Objects: 0] o- iscsi ............................................................................... [Targets: 1] | o- iqn.2016-02.org.exemplo:target-01 .................................................... [TPGs: 1] | o- tpg1 .................................................................. [no-gen-acls, no-auth] | o- acls ............................................................................. [ACLs: 2] | | o- iqn.2016-02.org.exemplo:cliente01 ....................................... [Mapped LUNs: 2] | | | o- mapped_lun0 ................................................. [lun0 block/volume01 (rw)] | | | o- mapped_lun1 ................................................. [lun1 block/volume02 (rw)] | | o- iqn.2016-02.org.exemplo:cliente02 ....................................... [Mapped LUNs: 2] | | o- mapped_lun0 ................................................. [lun0 block/volume01 (rw)] | | o- mapped_lun1 ................................................. [lun1 block/volume02 (rw)] | o- luns ............................................................................. [LUNs: 2] | | o- lun0 ...................................... [block/volume01 (/dev/vg_storage/lv_volume01)] | | o- lun1 ...................................... [block/volume02 (/dev/vg_storage/lv_volume02)] | o- portals ....................................................................... [Portals: 2] | o- 192.0.2.14:3260 ..................................................................... [OK] | o- 192.0.2.252:3260 .................................................................... [OK] o- loopback ............................................................................ [Targets: 0] />
Iniciando os serviços e colocando na inicialização
root@storage:~# systemctl start target.service
root@storage:~# systemctl enable target.service Created symlink from /etc/systemd/system/multi-user.target.wants/target.service to /usr/lib/systemd/system/target.service.
root@storage:~# systemctl status target.service ● target.service - Restore LIO kernel target configuration Loaded: loaded (/usr/lib/systemd/system/target.service; enabled; vendor preset: disabled) Active: active (exited) since Ter 2016-02-02 20:18:56 BRT; 9s ago Process: 6014 ExecStart=/usr/bin/targetctl restore (code=exited, status=0/SUCCESS) Main PID: 6014 (code=exited, status=0/SUCCESS) Fev 02 20:18:56 storage systemd[1]: Starting Restore LIO kernel target configuration... Fev 02 20:18:56 storage systemd[1]: Started Restore LIO kernel target configuration.
root@storage:~# ss -nat | grep 3260 LISTEN 0 256 192.0.2.14:3260 *:* LISTEN 0 256 192.0.2.252:3260 *:*
Liberando o firewall
root@storage:~# firewall-cmd --permanent --add-service=iscsi-target success
root@storage:~# firewall-cmd --reload success
Configurando o cliente
root@centos7:~# yum install iscsi-initiator-utils -y
root@centos7:~# rpm -qil iscsi-initiator-utils Name : iscsi-initiator-utils Version : 6.2.0.873 Release : 32.el7 Architecture: x86_64 Install Date: Ter 02 Fev 2016 20:26:29 BRT Group : System Environment/Daemons Size : 2482427 License : GPLv2+ Signature : RSA/SHA256, Qua 25 Nov 2015 11:43:56 BRT, Key ID 24c6a8a7f4a80eb5 Source RPM : iscsi-initiator-utils-6.2.0.873-32.el7.src.rpm Build Date : Sex 20 Nov 2015 10:53:13 BRT Build Host : worker1.bsys.centos.org Relocations : (not relocatable) Packager : CentOS BuildSystem <http://bugs.centos.org> Vendor : CentOS URL : http://www.open-iscsi.org Summary : iSCSI daemon and utility programs Description : The iscsi package provides the server daemon for the iSCSI protocol, as well as the utility programs used to manage it. iSCSI is a protocol for distributed disk access using SCSI commands sent over Internet Protocol networks. /etc/NetworkManager/dispatcher.d/04-iscsi /etc/iscsi /etc/iscsi/iscsid.conf /usr/lib/systemd/system/iscsi-shutdown.service /usr/lib/systemd/system/iscsi.service /usr/lib/systemd/system/iscsid.service /usr/lib/systemd/system/iscsid.socket /usr/lib/tmpfiles.d/iscsi.conf /usr/lib64/libiscsi.so.0 /usr/lib64/python2.7/site-packages/libiscsimodule.so /usr/libexec/iscsi-mark-root-nodes /usr/sbin/iscsi-iname /usr/sbin/iscsiadm /usr/sbin/iscsid /usr/sbin/iscsistart /usr/share/doc/iscsi-initiator-utils-6.2.0.873 /usr/share/doc/iscsi-initiator-utils-6.2.0.873/README /usr/share/man/man8/iscsi-iname.8.gz /usr/share/man/man8/iscsiadm.8.gz /usr/share/man/man8/iscsid.8.gz /usr/share/man/man8/iscsistart.8.gz /var/lib/iscsi /var/lib/iscsi/ifaces /var/lib/iscsi/isns /var/lib/iscsi/nodes /var/lib/iscsi/send_targets /var/lib/iscsi/slp /var/lib/iscsi/static /var/lock/iscsi /var/lock/iscsi/lock
Setando a ACL
root@centos7:~# cat /etc/iscsi/initiatorname.iscsi InitiatorName=iqn.2016-02.org.exemplo:cliente01
Mapeando os target
root@centos7:~# iscsiadm --mode discovery --type sendtargets --portal 192.0.2.252 192.0.2.252:3260,1 iqn.2016-02.org.exemplo:target-01 192.0.2.14:3260,1 iqn.2016-02.org.exemplo:target-01
Iniciando e colocando os serviços na inicialização
root@centos7:~# systemctl start iscsi.service
root@centos7:~# systemctl enable iscsi.service
root@centos7:~# systemctl status iscsi.service -l ● iscsi.service - Login and scanning of iSCSI devices Loaded: loaded (/usr/lib/systemd/system/iscsi.service; enabled; vendor preset: disabled) Active: active (exited) since Ter 2016-02-02 20:35:47 BRT; 2min 2s ago Docs: man:iscsid(8) man:iscsiadm(8) Main PID: 2667 (code=exited, status=8) Fev 02 20:33:44 centos7 systemd[1]: Starting Login and scanning of iSCSI devices... Fev 02 20:33:44 centos7 iscsi-mark-root-nodes[2663]: iscsiadm: No active sessions. Fev 02 20:35:47 centos7 iscsiadm[2667]: iscsiadm: Could not login to [iface: default, target: iqn.2016-02.org.exemplo:target-01, portal: 192.0.2.14,3260]. Fev 02 20:35:47 centos7 iscsiadm[2667]: iscsiadm: initiator reported error (8 - connection timed out) Fev 02 20:35:47 centos7 iscsiadm[2667]: iscsiadm: Could not log into all portals Fev 02 20:35:47 centos7 iscsiadm[2667]: Logging in to [iface: default, target: iqn.2016-02.org.exemplo:target-01, portal: 192.0.2.252,3260] (multiple) Fev 02 20:35:47 centos7 iscsiadm[2667]: Logging in to [iface: default, target: iqn.2016-02.org.exemplo:target-01, portal: 192.0.2.14,3260] (multiple) Fev 02 20:35:47 centos7 iscsiadm[2667]: Login to [iface: default, target: iqn.2016-02.org.exemplo:target-01, portal: 192.0.2.252,3260] successful. Fev 02 20:35:47 centos7 systemd[1]: Started Login and scanning of iSCSI devices.
Referências:
wiki/filesystem/targetcli.txt · Last modified: by Wiki Administrator