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November 28, 2017 05:44
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iSCSI Initiator Install | |
To configure Ubuntu Server as an iSCSI initiator install the open-iscsi package. In a terminal enter: | |
sudo apt install open-iscsi | |
iSCSI Initiator Configuration | |
Once the open-iscsi package is installed, edit /etc/iscsi/iscsid.conf changing the following: | |
node.startup = automatic | |
You can check which targets are available by using the iscsiadm utility. Enter the following in a terminal: | |
sudo iscsiadm -m discovery -t st -p 192.168.0.10 | |
-m: determines the mode that iscsiadm executes in. | |
-t: specifies the type of discovery. | |
-p: option indicates the target IP address. | |
Change example 192.168.0.10 to the target IP address on your network. | |
If the target is available you should see output similar to the following: | |
192.168.0.10:3260,1 iqn.1992-05.com.emc:sl7b92030000520000-2 | |
The iqn number and IP address above will vary depending on your hardware. | |
You should now be able to connect to the iSCSI target, and depending on your target setup you may have to enter user credentials. Login to the iSCSI node: | |
sudo iscsiadm -m node --login | |
Check to make sure that the new disk has been detected using dmesg: | |
dmesg | grep sd | |
[ 4.322384] sd 2:0:0:0: Attached scsi generic sg1 type 0 | |
[ 4.322797] sd 2:0:0:0: [sda] 41943040 512-byte logical blocks: (21.4 GB/20.0 GiB) | |
[ 4.322843] sd 2:0:0:0: [sda] Write Protect is off | |
[ 4.322846] sd 2:0:0:0: [sda] Mode Sense: 03 00 00 00 | |
[ 4.322896] sd 2:0:0:0: [sda] Cache data unavailable | |
[ 4.322899] sd 2:0:0:0: [sda] Assuming drive cache: write through | |
[ 4.323230] sd 2:0:0:0: [sda] Cache data unavailable | |
[ 4.323233] sd 2:0:0:0: [sda] Assuming drive cache: write through | |
[ 4.325312] sda: sda1 sda2 < sda5 > | |
[ 4.325729] sd 2:0:0:0: [sda] Cache data unavailable | |
[ 4.325732] sd 2:0:0:0: [sda] Assuming drive cache: write through | |
[ 4.325735] sd 2:0:0:0: [sda] Attached SCSI disk | |
[ 2486.941805] sd 4:0:0:3: Attached scsi generic sg3 type 0 | |
[ 2486.952093] sd 4:0:0:3: [sdb] 1126400000 512-byte logical blocks: (576 GB/537 GiB) | |
[ 2486.954195] sd 4:0:0:3: [sdb] Write Protect is off | |
[ 2486.954200] sd 4:0:0:3: [sdb] Mode Sense: 8f 00 00 08 | |
[ 2486.954692] sd 4:0:0:3: [sdb] Write cache: disabled, read cache: enabled, doesn't | |
support DPO or FUA | |
[ 2486.960577] sdb: sdb1 | |
[ 2486.964862] sd 4:0:0:3: [sdb] Attached SCSI disk | |
In the output above sdb is the new iSCSI disk. Remember this is just an example; the output you see on your screen will vary. | |
Next, create a partition, format the file system, and mount the new iSCSI disk. In a terminal enter: |
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