Allow the core volume IOs to be forwarded directly to backend volumes to
avoid unnecessary allocations.
Signed-off-by: Robert Baldyga <robert.baldyga@huawei.com>
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@huawei.com>
Optional uuid parameter to ocf_volume_init() points to UUID object
initialized by the user. We should verify it is not excesively large
as we attempt to allocate a buffer to store a copy of the UUID.
Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
After deinitialization of volume there is no need to call back to
type ops. Currently we would erroneously call on_deinit() callback
multiple times if ocf_volume_deinit() is performed more than once,
which we expect to happen and treat as a correct use of API.
Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
Volumes are now exposed in OCF API and we should gracefully handle
attempt to open already opened volume (instead of ENV_BUG).
Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
Environment should provide calls for destroying primitives (i.e. env_mutex_destroy()) and OCF should call these functions in its cleanup paths.
Signed-off-by: Firas Medini <mdnfiras@yahoo.com>
Adapter can provide ops for data type deinitialization, if any additional
operations are required on deinitialization procedure.
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
Volume close should not close underlying device until all
I/O targeting this volume are deallocated. To achieve this
a reference counter is added to volume. Counter value
matches number of I/O objects associated with volume. Counter
is freezed when volume is closed, blocking allocation of new
I/O objects.
Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
There is a risk that without uuid.data pointer denitialization it will
be freed during original volume deinit, zeroing uuid.data pointer
prevents that.
Signed-off-by: Michal Rakowski <michal.rakowski@intel.com>
This pointer is used to provide optional volume specific data
from the user down to bottom volume open callback. volume_params
is provided to OCF in ocf_mngt_cache_device_config.volume_params.
Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
