A ZFS volume as an iSCSI target is managed just like any other ZFS dataset, except that you cannot rename the dataset, roll back a volume snapshot, or export the pool while the ZFS volumes are shared as iSCSI LUNs. If you attempt to perform those operations, messages similar to the following are displayed:
# zfs rename system1/volumes/v2 system1/volumes/v1 cannot rename 'system1/volumes/v2': dataset is busy # zpool export system1 cannot export 'system1': pool is busy
All iSCSI target configuration information is stored within the dataset. Like an NFS shared file system, an iSCSI target that is imported on a different system is shared appropriately.
The Common Multiprotocol SCSI Target (COMSTAR) software framework enables you to convert any Oracle Solaris stem into a SCSI target device that can be accessed over a storage network by initiator hosts. You can create and configure a ZFS volume to be shared as an iSCSI logical unit (LUN).
# pkg install group/feature/storage-server
For example:
# zfs create -V 2g system1/volumes/v2
For example:
# sbdadm create-lu /dev/zvol/rdsk/system1/volumes/v2 Created the following LU: GUID DATA SIZE SOURCE -------------------------------- ------------------- ---------------- 600144f000144f1dafaa4c0faff20001 2147483648 /dev/zvol/rdsk/system1/volumes/v2 # sbdadm list-lu Found 1 LU(s) GUID DATA SIZE SOURCE -------------------------------- ------------------- ---------------- 600144f000144f1dafaa4c0faff20001 2147483648 /dev/zvol/rdsk/system1/volumes/v2
You can expose the LUN views to all ZFS clients or to a selected list of ZFS clients. In the following example, the LUN view is shared to all ZFS clients.
# stmfadm list-lu LU Name: 600144F000144F1DAFAA4C0FAFF20001
# stmfadm add-view 600144F000144F1DAFAA4C0FAFF20001 # stmfadm list-view -l 600144F000144F1DAFAA4C0FAFF20001 View Entry: 0 Host group : All Target group : All LUN : 0
For information about creating the iSCSI targets, see Chapter 8, Configuring Storage Devices With COMSTAR in Managing Devices in Oracle Solaris 11.3.