storpool.spopenstack 2.1.0

OpenStack helpers for the StorPool API

Description

This package contains Python helper classes to let the StorPool drivers in OpenStack use the StorPool API in a common way.

StorPool is distributed data storage software running on standard x86 servers. StorPool aggregates the performance and capacity of all drives into a shared pool of storage distributed among the servers. Within this storage pool the user creates thin-provisioned volumes that are exposed to the clients as block devices. StorPool consists of two parts wrapped in one package - a server and a client. The StorPool server allows a hypervisor to act as a storage node, while the StorPool client allows a hypervisor node to access the storage pool and act as a compute node. In OpenStack terms the StorPool solution allows each hypervisor node to be both a storage and a compute node simultaneously.

Version history

2.1.0

• add the remove_keys() method to the SPLockedJSONDB class
• remove stale requests from our openstack-attach.json cache file

2.0.0

• instead of raising the AttachmentInUse exception, forcibly detach the volume on the last attempt
• remove the now unused AttachmentInUse exception

1.0.3

• ignore nonexistent request IDs upon detaching
• allow the default “os” name prefix for volumes created by the OpenStack tools to be overridden by the storpool.conf file’s new SP_OPENSTACK_VOLUME_PREFIX setting
• raise a specific exception when a volume is still in use and may not be detached so that the Nova attachment driver may raise a specific exception in its turn

1.0.2

• drop the dependency on oslo_concurrency in setup.py, too

1.0.1

• use our own locking instead of oslo_concurrency, making it much easier (or even at all possible) to work with OpenStack Juno
• wait for all consumers of the attached StorPool volume to release it when detaching it
• wait a bit longer for a newly-attached volume to appear
• only retry locking on a “file exists” error; any other errors are fatal

1.0.0

• first public release