Configuring the Storwize family and SVC driver

Enabling the Storwize family and SVC driver

Set the volume driver to the Storwize family and SVC driver by setting the volume_driver option in nova.conf as follows:

volume_driver=nova.volume.storwize_svc.StorwizeSVCDriver

Configuring options for the Storwize family and SVC driver in nova.conf

The following options apply to all volumes and cannot be changed for a specific volume.

Table 11.1. List of configuration flags for Storwize storage and SVC driver
Flag name	Type	Default	Description
`san_ip`	Required		Management IP or host name
`san_ssh_port`	Optional	22	Management port
`san_login`	Required		Management login username
`san_password`	Required ^[a]		Management login password
`san_private_key`	Required ^[a]		Management login SSH private key
`storwize_svc_volpool_name`	Required		Pool name for volumes
`storwize_svc_vol_vtype`	Optional	Striped	Volume virtualization type ^[b]
`storwize_svc_vol_rsize`	Optional	2%	Initial physical allocation ^[c]
`storwize_svc_vol_warning`	Optional	0 (disabled)	Space allocation warning threshold ^[b]
`storwize_svc_vol_autoexpand`	Optional	True	Enable or disable volume auto expand ^[d]
`storwize_svc_vol_grainsize`	Optional	256	Volume grain size ^[b] in KB
`storwize_svc_vol_compression`	Optional	False	Enable or disable Real-Time Compression ^[e]
`storwize_svc_vol_easytier`	Optional	True	Enable or disable Easy Tier ^[f]
`storwize_svc_flashcopy_timeout`	Optional	120	FlashCopy timeout threshold ^[g] (seconds)
^[a]The authentication requires either a password (`san_password`) or SSH private key (`san_private_key`). One must be specified. If both are specified the driver will use only the SSH private key. ^[b]More details on this configuration option are available in the Storwize family and SVC command line documentation under the `mkvdisk` command. ^[c] The driver creates thin-provisioned volumes by default. The `storwize_svc_vol_rsize` flag defines the initial physical allocation size for thin-provisioned volumes, or if set to `-1`, the driver creates full allocated volumes. More details about the available options are available in the Storwize family and SVC documentation. ^[d] Defines whether thin-provisioned volumes can be auto expanded by the storage system, a value of `True` means that auto expansion is enabled, a value of `False` disables auto expansion. Details about this option can be found in the `–autoexpand` flag of the Storwize family and SVC command line interface `mkvdisk` command. ^[e]Defines whether Real-time Compression is used for the volumes created with OpenStack. Details on Real-time Compression can be found in the Storwize family and SVC documentation. The Storwize or SVC system must have compression enabled for this feature to work. ^[f]Defines whether Easy Tier is used for the volumes created with OpenStack. Details on EasyTier can be found in the Storwize family and SVC documentation. The Storwize or SVC system must have Easy Tier enabled for this feature to work. ^[g]The driver wait timeout threshold when creating an OpenStack snapshot. This is actually the maximum amount of time the driver will wait for the Storwize family or SVC system to prepare a new FlashCopy mapping. The driver accepts a maximum wait time of 600 seconds (10 minutes).

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