Citrix Systems 6 User Manual
49
Creating a Shared NFS SR (NFS)
Device-config parameters for NFS SRs:
Parameter Name
Description
Required?
server
IP address or hostname of the NFS
server
server
Yes
serverpath
path, including the NFS mount
point, to the NFS server that hosts
the SR
point, to the NFS server that hosts
the SR
Yes
To create a shared NFS SR on
192.168.1.10:/export1
use the following command.
xe sr-create host-uuid=
<host_uuid>
content-type=user \
name-label=
<"Example shared NFS SR">
shared=true \
device-config:server=
<192.168.1.10>
device-config:serverpath=
</export1>
type=nfs
LVM over Hardware HBA
The LVM over hardware HBA type represents disks as VHDs on Logical Volumes within a Volume Group created
on an HBA LUN providing, for example, hardware-based iSCSI or FC support.
on an HBA LUN providing, for example, hardware-based iSCSI or FC support.
XenServer hosts support Fibre Channel (FC) storage area networks (SANs) through Emulex or QLogic host bus
adapters (HBAs). All FC configuration required to expose a FC LUN to the host must be completed manually,
including storage devices, network devices, and the HBA within the XenServer host. Once all FC configuration is
complete the HBA will expose a SCSI device backed by the FC LUN to the host. The SCSI device can then be used
to access the FC LUN as if it were a locally attached SCSI device.
adapters (HBAs). All FC configuration required to expose a FC LUN to the host must be completed manually,
including storage devices, network devices, and the HBA within the XenServer host. Once all FC configuration is
complete the HBA will expose a SCSI device backed by the FC LUN to the host. The SCSI device can then be used
to access the FC LUN as if it were a locally attached SCSI device.
Use the sr-probe command to list the LUN-backed SCSI devices present on the host. This command forces a scan
for new LUN-backed SCSI devices. The path value returned by sr-probe for a LUN-backed SCSI device is consistent
across all hosts with access to the LUN, and therefore must be used when creating shared SRs accessible by all
hosts in a resource pool.
for new LUN-backed SCSI devices. The path value returned by sr-probe for a LUN-backed SCSI device is consistent
across all hosts with access to the LUN, and therefore must be used when creating shared SRs accessible by all
hosts in a resource pool.
The same features apply to QLogic iSCSI HBAs.
See
for details on creating shared HBA-based FC and iSCSI SRs.
Note:
XenServer support for Fibre Channel does not support direct mapping of a LUN to a VM. HBA-
based LUNs must be mapped to the host and specified for use in an SR. VDIs within the SR
are exposed to VMs as standard block devices.
based LUNs must be mapped to the host and specified for use in an SR. VDIs within the SR
are exposed to VMs as standard block devices.
Storage Configuration
This section covers creating storage repository types and making them available to a XenServer host. The
examples provided pertain to storage configuration using the CLI, which provides the greatest flexibility. See the
XenCenter Help for details on using the New Storage Repository wizard.
examples provided pertain to storage configuration using the CLI, which provides the greatest flexibility. See the
XenCenter Help for details on using the New Storage Repository wizard.
Creating Storage Repositories
This section explains how to create Storage Repositories (SRs) of different types and make them available to a
XenServer host. The examples provided cover creating SRs using the xe CLI. See the XenCenter help for details on
using the New Storage Repository wizard to add SRs using XenCenter.
XenServer host. The examples provided cover creating SRs using the xe CLI. See the XenCenter help for details on
using the New Storage Repository wizard to add SRs using XenCenter.
Note:
Local SRs of type
lvm
and
ext
can only be created using the xe CLI. After creation all SR types
can be managed by either XenCenter or the xe CLI.