ISCSI: Connect Ubuntu ke iSCSI Volume: Difference between revisions

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New page: Q. How do I format and connect to an iSCSI Volume under Debian / Ubuntu Linux? A. You need to install open-iscsi package for high performance, transport independent iSCSI implementation u...
 
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Q. How do I format and connect to an iSCSI Volume under Debian / Ubuntu Linux?
Install
 
A. You need to install open-iscsi package for high performance, transport independent iSCSI implementation under Debian / Ubuntu Linux. This package is also known as the Linux Open-iSCSI Initiator. You need Linux operating system with kernel version 2.6.16, or later. See REHL 5 / CentOS 5 / Fedora Linux specific instructions here.
Install Open-iSCSI Initiator
 
Type the following command at a shell prompt:


  $ sudo apt-get install open-iscsi
  $ sudo apt-get install open-iscsi


==Open-iSCSI default configuration==
Pastikan ada /etc/iscsi supaya iscsiadm tidak complain
 
You need to soft-link (path fix) few two files to autologin work i.e. fix file paths for iscsiadm, enter:


  ln -s /etc/{iscsid.conf,initiatorname.iscsi} /etc/iscsi/
  ln -s /etc/{iscsid.conf,initiatorname.iscsi} /etc/iscsi/


Default configuration file could be located at /etc/iscsi/iscsid.conf or ~/.iscsid.conf. Open /etc/iscsi/iscsid.conf file:
Konfigurasi default ada di /etc/iscsi/iscsid.conf atau ~/.iscsid.conf. Buka /etc/iscsi/iscsid.conf


  # vi /etc/iscsi/iscsid.conf
  # vi /etc/iscsi/iscsid.conf


Set node.session.auth.username, node.session.auth.password and other parameter as follows:
Set node.session.auth.username, node.session.auth.password dan parameter lainnya sebagai berikut:


  node.startup = automatic
  node.startup = automatic
Line 36: Line 29:
  node.conn[0].iscsi.MaxRecvDataSegmentLength = 65536  
  node.conn[0].iscsi.MaxRecvDataSegmentLength = 65536  


Save and close the file. Restart open-iscsi service:
Versi minimal sekali, ubah
 
node.startup = manual


  # /etc/init.d/open-iscsi restart
menjadi
 
node.startup = automatic
 
Restart open-iscsi
 
  /etc/init.d/open-iscsi restart


Now you need to run a discovery against the iscsi target host:
Jalanan discovery terhadap iscsi target host:


  # iscsiadm -m discovery -t sendtargets -p ISCSI-SERVER-IP-ADDRESS
  # iscsiadm -m discovery -t sendtargets -p ISCSI-SERVER-IP-ADDRESS


If 192.168.1.60 is iSCSI server IP address, enter:
Jika iSCSI server IP address adalah 192.168.1.100, tulis:
 
# iscsiadm -m discovery -t sendtargets -p 192.168.1.100
 
atau


  # iscsiadm -m discovery -t sendtargets -p 192.168.1.60
  # iscsiadm --mode discovery --type sendtargets --portal 192.168.1.100


OR
Akan keluar kira-kira


  # iscsiadm --mode discovery --type sendtargets --portal 192.168.1.60
  # iscsiadm -m discovery -t sendtargets -p 192.168.1.100
192.168.1.101:3260,3 iqn.1992-04.com.emc:cx.ckm00100900301.a3
192.168.1.102:3260,1 iqn.1992-04.com.emc:cx.ckm00100900301.b2
192.168.1.103:3260,4 iqn.1992-04.com.emc:cx.ckm00100900301.b3
192.168.1.100:3260,2 iqn.1992-04.com.emc:cx.ckm00100900301.a2


Note down the record id (such as iqn.2001-05.com.doe:test) found by the discovery. You need the same for login. Login, must use a node record id found by the discovery:
Login menggunakan perintah


  # iscsiadm --mode node --targetname iqn.2001-05.com.doe:test --portal 192.168.1.60:3260 --login
  # iscsiadm --mode node --targetname iqn.1992-04.com.emc:cx.ckm00100900301.a2 --portal 192.168.1.100:3260 --login


Finally restart the service again:
Restart iscsi


  # /etc/init.d/open-iscsi restart
  # /etc/init.d/open-iscsi restart


Format iSCSI Volume
==Format iSCSI Volume==


Now you should see an additional drive on the system such as /dev/sdc. Use /var/log/messages file to find out device name:
Seharusnya akan ada tambahan drive misalnya /dev/sdc. Gunakan /var/log/messages untuk melihat nama device:


  # tail -f /var/log/messages
  # tail -f /var/log/messages


If your device name is /dev/sdc, enter the following command to create a partition:
Jika nama device adalah /dev/sdc, masukan langkah berikut untuk membuat partisi:


  # fdisk /dev/sdc
  # fdisk /dev/sdc


Next format partition:
Format partisi tersebut:


  # mkfs.ext3 /dev/sdc1
  # mkfs.ext3 /dev/sdc1

Revision as of 06:52, 7 April 2010

Install 

$ sudo apt-get install open-iscsi

Pastikan ada /etc/iscsi supaya iscsiadm tidak complain 

ln -s /etc/{iscsid.conf,initiatorname.iscsi} /etc/iscsi/

Konfigurasi default ada di /etc/iscsi/iscsid.conf atau ~/.iscsid.conf. Buka /etc/iscsi/iscsid.conf 

# vi /etc/iscsi/iscsid.conf

Set node.session.auth.username, node.session.auth.password dan parameter lainnya sebagai berikut: 

node.startup = automatic
node.session.auth.username = MY-ISCSI-USER
node.session.auth.password = MY-ISCSI-PASSWORD
discovery.sendtargets.auth.username = MY-ISCSI-USER
discovery.sendtargets.auth.password = MY-ISCSI-PASSWORD
node.session.timeo.replacement_timeout = 120
node.conn[0].timeo.login_timeout = 15
node.conn[0].timeo.logout_timeout = 15
node.conn[0].timeo.noop_out_interval = 10
node.conn[0].timeo.noop_out_timeout = 15
node.session.iscsi.InitialR2T = No
node.session.iscsi.ImmediateData = Yes
node.session.iscsi.FirstBurstLength = 262144
node.session.iscsi.MaxBurstLength = 16776192
node.conn[0].iscsi.MaxRecvDataSegmentLength = 65536

Versi minimal sekali, ubah 

node.startup = manual

menjadi 

node.startup = automatic

Restart open-iscsi 

/etc/init.d/open-iscsi restart

Jalanan discovery terhadap iscsi target host: 

# iscsiadm -m discovery -t sendtargets -p ISCSI-SERVER-IP-ADDRESS

Jika iSCSI server IP address adalah 192.168.1.100, tulis: 

# iscsiadm -m discovery -t sendtargets -p 192.168.1.100

atau 

# iscsiadm --mode discovery --type sendtargets --portal 192.168.1.100

Akan keluar kira-kira 

# iscsiadm -m discovery -t sendtargets -p 192.168.1.100
192.168.1.101:3260,3 iqn.1992-04.com.emc:cx.ckm00100900301.a3
192.168.1.102:3260,1 iqn.1992-04.com.emc:cx.ckm00100900301.b2
192.168.1.103:3260,4 iqn.1992-04.com.emc:cx.ckm00100900301.b3
192.168.1.100:3260,2 iqn.1992-04.com.emc:cx.ckm00100900301.a2

Login menggunakan perintah 

# iscsiadm --mode node --targetname iqn.1992-04.com.emc:cx.ckm00100900301.a2 --portal 192.168.1.100:3260 --login

Restart iscsi 

# /etc/init.d/open-iscsi restart

Format iSCSI Volume

Seharusnya akan ada tambahan drive misalnya /dev/sdc. Gunakan /var/log/messages untuk melihat nama device: 

# tail -f /var/log/messages

Jika nama device adalah /dev/sdc, masukan langkah berikut untuk membuat partisi: 

# fdisk /dev/sdc

Format partisi tersebut: 

# mkfs.ext3 /dev/sdc1

Mount file system: 

# mkdir /iscsi
# mount /dev/sdc1 /iscsi

Referensi

Pranala Menarik

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