openstack/cinder-specs
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cinder-specs/specs/juno/xio-iscsi-fc-volume-driver.rst
Walter A. Boring IV b4c999112b Fix rst formatting and fix tox 
This patch does 2 things:
1) it fixes the broken formatting of all of the rst files, so they
   render correctly through sphinx
2) Fix tox so that it runs cleanly against the corrected rst files.

Change-Id: I3b3689c61054f051075dc6bc519c02e4c63626f7
2014-07-17 18:13:42 -07:00

3.4 KiB
Raw Blame History

Cinder volume driver for X-IO ISE storage

Include the URL of your launchpad blueprint:

https://blueprints.launchpad.net/cinder/+spec/xio-iscsi-fc-volume-driver

Add Cinder volume driver for X-IO ISE storage products. The driver will implement all APIs required to support both FC and iSCSI protocols. It communicates with the ISE storage unit using REST.

Problem description

Currently no volume driver for X-IO ISE storage available in any release branch.

Proposed change

The new driver will add support for ISE storage products as backend storage in Cinder. The driver supports the following APIs: * Volume Create/Delete * Volume Attach/Detach * Snapshot Create/Delete * Create Volume from Snapshot * Get Volume Stats * Copy Image to Volume * Copy Volume to Image * Clone Volume * Extend Volume

Driver will be implemented using three classes in separate files.

  • class XIOISEDriver

    Main class common to FC and ISCSI driver classes.

  • class XIOISCSIDriver

    Driver specific for ISCSI protocol.

  • class XIOFCDriver

    Driver specific for FC protocol.

Alternatives

None

Data model impact

None

REST API impact

None

Security impact

None

Notifications impact

None

Other end user impact

Addition of the X-IO volume driver will allow the end user to use X-IO storage as backend storage in Cinder.

Performance Impact

None

Other deployer impact

The driver can be configured with the following parameters in cinder.conf: * san_ip - IP to REST management interface on ISE * san_login - user name for REST management interface * san_password - password for user * ise_raid_level - RAID level for volumes * ise_default_pool - storage pool to use for volume creation * iscsi_ip_address - IP to one ISCSI target interface on ISE

The ISE ISCSI target interface specified in iscsi_ip_address will return all target portals available on that ISE, limited to the same subnet when receiving an ISCSI discover sendtargets request from a host identified as an Openstack host. This was added to allow the host to use multipathing, if enabled on the hypervisor.

Developer impact

None

Implementation

Assignee(s)

Richard Hedlind

Primary assignee:

rhedlind

Other contributors:

None

Work Items

Common driver:

xio_common.py Driver code common to FC and ISCSI. Done

ISCSI driver:

xio_iscsi.py Driver code specific to ISCSI. Done. Passed driver cert test.

FC driver:

xio_fc.py In progress. Code complete, but Driver cert in progress.

Unit test:

test_xio_fc.py test_xio_iscsi.py In progress.

CI environment will be setup, one for each driver type.

Dependencies

None

Testing

Test using existing test infrastructure according to driver submission steps.

Documentation Impact

Support Matrix needs to be updated to include X-IO support. https://wiki.openstack.org/wiki/CinderSupportMatrix

Block storage documentation needs to be updated to include X-IO volume driver information in the volume drivers section. http://docs.openstack.org/

References

None