Citrix Systems 5.6 manual Local LVM, Local EXT3 VHD, Creating a local LVM SR lvm

The maximum supported VDI sizes are:

Storage type	Maximum VDI size
EXT3	2TB
LVM	2TB
Netapp	2TB
EqualLogic	15TB
ONTAP(NetApp)	12TB

Local LVM

The Local LVM type presents disks within a locally-attached Volume Group.

By default, XenServer uses the local disk on the physical host on which it is installed. The Linux Logical Volume Manager (LVM) is used to manage VM storage. A VDI is implemented in VHD format in an LVM logical volume of the specified size.

XenServer versions prior to 5.6 did not use the VHD format and will remain in legacy mode. See the section called “Upgrading LVM storage from XenServer 5.0 or earlier” for information about upgrading a storage repository to the new format.

Creating a local LVM SR (lvm)

Device-config parameters for lvm SRs are:

Parameter Name	Description	Required?
Device	device name on the local host to	Yes
	use for the SR

To create a local lvm SR on /dev/sdb use the following command.

xe sr-create host-uuid=<valid_uuid>content-type=user \ name-label=<"Example Local LVM SR"> shared=false \ device-config:device=/dev/sdb type=lvm

Local EXT3 VHD

The Local EXT3 VHD type represents disks as VHD files stored on a local path.

Local disks can also be configured with a local EXT SR to serve VDIs stored in the VHD format. Local disk EXT SRs must be configured using the XenServer CLI.

By definition, local disks are not shared across pools of XenServer host. As a consequence, VMs whose VDIs are stored in SRs on local disks are not agile -- they cannot be migrated between XenServer hosts in a resource pool.

Creating a local EXT3 SR (ext)

Device-config parameters for ext SRs:

40