pve-storage-iscsidirect.adoc

   1 [[storage_iscsidirect]]
   2 User Mode iSCSI Backend
   3 -----------------------
   4 ifdef::wiki[]
   5 :pve-toplevel:
   6 :title: Storage: User Mode iSCSI
   7 endif::wiki[]
   8
   9 Storage pool type: `iscsidirect`
  10
  11 This backend provides basically the same functionality as the
  12 Open-iSCSI backed, but uses a user-level library (package `libiscsi2`)
  13 to implement it.
  14
  15 It should be noted that there are no kernel drivers involved, so this
  16 can be viewed as performance optimization. But this comes with the
  17 drawback that you cannot use LVM on top of such iSCSI LUN. So you need
  18 to manage all space allocations at the storage server side.
  19
  20 Configuration
  21 ~~~~~~~~~~~~~
  22
  23 The user mode iSCSI backend uses the same configuration options as the
  24 Open-iSCSI backed.
  25
  26 .Configuration Example (`/etc/pve/storage.cfg`)
  27 ----
  28 iscsidirect: faststore
  29      portal 10.10.10.1
  30      target iqn.2006-01.openfiler.com:tsn.dcb5aaaddd
  31 ----
  32
  33 Storage Features
  34 ~~~~~~~~~~~~~~~~
  35
  36 NOTE: This backend works with VMs only. Containers cannot use this
  37 driver.
  38
  39 .Storage features for backend `iscsidirect`
  40 [width="100%",cols="m,m,3*d",options="header"]
  41 |==============================================================================
  42 |Content types  |Image formats  |Shared |Snapshots |Clones
  43 |images         |raw            |yes    |no        |no
  44 |==============================================================================
  45
  46 ifdef::wiki[]
  47
  48 See Also
  49 ~~~~~~~~
  50
  51 * link:/wiki/Storage[Storage]
  52
  53 endif::wiki[]
  54