Verified TGT iSER support: Linux iserserver.main 3.13.0-63-generic #103-Ubuntu SMP Fri Aug 14 21:42:59 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux Linux iserclient.main 3.13.0-63-generic #103-Ubuntu SMP Fri Aug 14 21:42:59 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux ### SERVER root@iserserver:~# dd if=/dev/zero of=/disks/lunit1 bs=1M count=1024 oflag=direct 1024+0 records in 1024+0 records out 1073741824 bytes (1.1 GB) copied, 10.3035 s, 104 MB/s root@iserserver:~# tgt-setup-lun -n lunit1 -d /disks/lunit1 -t iser Using transport: iser Creating new target (name=iqn.2001-04.com.iserserver-lunit1, tid=1) Adding a logical unit (/disks/lunit1) to target, tid=1 Accepting connections from all initiators root@iserserver:~# ifconfig ib0 ib0 Link encap:UNSPEC HWaddr 80-00-05-8A-FE-80-00-00-00-00-00-00-00-00-00-00 inet addr:172.16.0.21 Bcast:172.16.0.127 Mask:255.255.255.128 ### CLIENT inaddy@iserclient:~$ sudo apt-get install open-iscsi Reading package lists... Done Building dependency tree Reading state information... Done The following NEW packages will be installed: open-iscsi 0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded. Need to get 268 kB of archives. After this operation, 2,221 kB of additional disk space will be used. Get:1 http://archive.ubuntu.com/ubuntu/ trusty/main open-iscsi amd64 2.0.873-3ubuntu9 [268 kB] Fetched 268 kB in 0s (466 kB/s) Selecting previously unselected package open-iscsi. (Reading database ... 80686 files and directories currently installed.) Preparing to unpack .../open-iscsi_2.0.873-3ubuntu9_amd64.deb ... Unpacking open-iscsi (2.0.873-3ubuntu9) ... Processing triggers for man-db (2.6.7.1-1ubuntu1) ... Processing triggers for ureadahead (0.100.0-16) ... Setting up open-iscsi (2.0.873-3ubuntu9) ... Processing triggers for ureadahead (0.100.0-16) ... inaddy@iserclient:~$ sudo su - root@iserclient:~# update-rc.d -f open-iscsi remove Removing any system startup links for /etc/init.d/open-iscsi ... /etc/rc0.d/K81open-iscsi /etc/rc1.d/K81open-iscsi /etc/rc6.d/K81open-iscsi /etc/rcS.d/S45open-iscsi root@iserclient:~# service open-iscsi stop * Unmounting iscsi-backed filesystems [ OK ] * Disconnecting iSCSI targets [ OK ] * Stopping iSCSI initiator service [ OK ] root@iserclient:~# service open-iscsi start * Starting iSCSI initiator service iscsid [ OK ] * Setting up iSCSI targets iscsiadm: No records found [ OK ] * Mounting network filesystems [ OK ] root@iserclient:~# ifconfig bi0 bi0: error fetching interface information: Device not found root@iserclient:~# ifconfig ib0 ib0 Link encap:UNSPEC HWaddr 80-00-05-8B-FE-80-00-00-00-00-00-00-00-00-00-00 inet addr:172.16.0.22 Bcast:172.16.0.127 Mask:255.255.255.128 inet6 addr: fe80::214:500:0:85/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:2044 Metric:1 RX packets:3960620 errors:0 dropped:0 overruns:0 frame:0 TX packets:1107686 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:256 RX bytes:7078431089 (7.0 GB) TX bytes:62030601 (62.0 MB) root@iserclient:~# iscsiadm -m discovery --op=show --type sendtargets --portal 172.16.0.21 -I iser 172.16.0.21:3260,1 iqn.2001-04.com.iserserver-lunit1 root@iserclient:~# iscsiadm -m discovery --op=new --op=del --type sendtargets --portal 172.16.0.21 -I iser 172.16.0.21:3260,1 iqn.2001-04.com.iserserver-lunit1 root@iserclient:~# iscsiadm -m node -l Logging in to [iface: iser, target: iqn.2001-04.com.iserserver-lunit1, portal: 172.16.0.21,3260] (multiple) Login to [iface: iser, target: iqn.2001-04.com.iserserver-lunit1, portal: 172.16.0.21,3260] successful. root@iserclient:~# dmesg | tail -3 [17385.747524] sd 4:0:0:1: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [17385.751051] sda: unknown partition table [17385.752130] sd 4:0:0:1: [sda] Attached SCSI disk root@iserclient:~# dd if=/dev/zero of=/dev/sda bs=1M count=1024 oflag=direct 1024+0 records in 1024+0 records out 1073741824 bytes (1.1 GB) copied, 1.8081 s, 594 MB/s root@iserclient:~# service open-iscsi stop * Unmounting iscsi-backed filesystems [ OK ] * Disconnecting iSCSI targets Logging out of session [sid: 3, target: iqn.2001-04.com.iserserver-lunit1, portal: 172.16.0.21,3260] Logout of [sid: 3, target: iqn.2001-04.com.iserserver-lunit1, portal: 172.16.0.21,3260] successful. [ OK ] * Stopping iSCSI initiator service [ OK ] root@iserclient:~# root@iserclient:~# service open-iscsi start * Starting iSCSI initiator service iscsid [ OK ] * Setting up iSCSI targets iscsiadm: No records found [ OK ] * Mounting network filesystems [ OK ] root@iserclient:~# ls -lah /dev/sd* ls: cannot access /dev/sd*: No such file or directory root@iserclient:~# iscsiadm -m node -l Logging in to [iface: iser, target: iqn.2001-04.com.iserserver-lunit1, portal: 172.16.0.21,3260] (multiple) Login to [iface: iser, target: iqn.2001-04.com.iserserver-lunit1, portal: 172.16.0.21,3260] successful. root@iserclient:~# dd if=/dev/zero of=/dev/sda bs=1M count=1024 oflag=direct 1024+0 records in 1024+0 records out 1073741824 bytes (1.1 GB) copied, 1.52628 s, 704 MB/s