pve-storage-iscsidirect.adoc

   1 User Mode iSCSI Backend
   2 -----------------------
   3 include::attributes.txt[]
   4
   5 ifdef::wiki[]
   6 :pve-toplevel:
   7 :title: Storage: User Mode iSCSI
   8 endif::wiki[]
   9
  10 Storage pool type: `iscsidirect`
  11
  12 This backend provides basically the same functionality as the
  13 Open-iSCSI backed, but uses a user-level library (package `libiscsi2`)
  14 to implement it.
  15
  16 It should be noted that there are no kernel drivers involved, so this
  17 can be viewed as performance optimization. But this comes with the
  18 drawback that you cannot use LVM on top of such iSCSI LUN. So you need
  19 to manage all space allocations at the storage server side.
  20
  21 Configuration
  22 ~~~~~~~~~~~~~
  23
  24 The user mode iSCSI backend uses the same configuration options as the
  25 Open-iSCSI backed.
  26
  27 .Configuration Example (`/etc/pve/storage.cfg`)
  28 ----
  29 iscsidirect: faststore
  30      portal 10.10.10.1
  31      target iqn.2006-01.openfiler.com:tsn.dcb5aaaddd
  32 ----
  33
  34 Storage Features
  35 ~~~~~~~~~~~~~~~~
  36
  37 NOTE: This backend works with VMs only. Containers cannot use this
  38 driver.
  39
  40 .Storage features for backend `iscsidirect`
  41 [width="100%",cols="m,m,3*d",options="header"]
  42 |==============================================================================
  43 |Content types  |Image formats  |Shared |Snapshots |Clones
  44 |images         |raw            |yes    |no        |no
  45 |==============================================================================
  46
  47 ifdef::wiki[]
  48
  49 See Also
  50 ~~~~~~~~
  51
  52 * link:/wiki/Storage[Storage]
  53
  54 endif::wiki[]
  55