†Storage pool probing is only possible at
‡If the username, password, or port configuration of the StorageLink service are changed from the default value then the appropriate parameter and value must be specified.
Storage Multipathing
Dynamic multipathing support is available for Fibre Channel and iSCSI storage backends. By default, it uses round- robin mode load balancing, so both routes have active traffic on them during normal operation. You can enable multipathing in XenCenter or on the xe CLI.
Before attempting to enable multipathing, verify that multiple targets are available on your storage server. For example, an iSCSI storage backend queried for sendtargets on a given portal should return multiple targets, as in the following example:
iscsiadm
To enable storage multipathing using the xe CLI
1.Unplug all PBDs on the host:
xe
2.Set the host's other-config:multipathing parameter:
xe
3.Set the host's
xe
4.If there are existing SRs on the host running in single path mode but that have multiple paths:
•Migrate or suspend any running guests with virtual disks in affected the SRs
•Unplug and
xe
To disable multipathing, first unplug your VBDs, set the host
Multipath support in XenServer is based on the
•mpathutil list
•mpathutil status
Note:
Due to incompatibilities with the integrated multipath management architecture, the standard
Note:
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