pve-storage-iscsidirect.adoc

User Mode iSCSI Backend

Storage pool type: iscsidirect

This backend provides basically the same functionality as the Open-iSCSI backed, but uses a user-level library (package libiscsi2) to implement it.

It should be noted that there are no kernel drivers involved, so this can be viewed as performance optimization. But this comes with the drawback that you cannot use LVM on top of such iSCSI LUN. So you need to manage all space allocations at the storage server side.

Configuration

The user mode iSCSI backend uses the same configuration options as the Open-iSCSI backed.

Configuration Example (/etc/pve/storage.cfg)

iscsidirect: faststore
     portal 10.10.10.1
     target iqn.2006-01.openfiler.com:tsn.dcb5aaaddd

Storage Features

Note	This backend works with VMs only. Containers cannot use this driver.

Table 1. Storage features for backend iscsidirect

Content types	Image formats	Shared	Snapshots	Clones
images	raw	yes	no	no