pve-storage-iscsidirect.adoc

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