Instead of calling flush separatly for each IO class, it is called after
collecting number of dirty cache lines defined by user or after iterating
through all IO classes.
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
Unlocking cache and putting queue are perormed in cleaning completion, so all
cleaning policies has to call completion.
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
PyOCF is a tool written with testing OCF functionality in mind.
It is a Python3 (3.6 version required) package which wraps OCF
by providing Python objects in place of OCF objects (volumes, queues,
etc). Thin layer of translation between OCF objects and PyOCF objects
enables using customized behaviors for OCF primitives by subclassing
PyOCF classes.
This initial version implements only WT and WI modes and single,
synchronously operating Queue.
TO DO:
- Queues/Cleaner/MetadataUpdater implemented as Python threads
- Loading of caches from PyOCF Volumes (fix bugs in OCF)
- Make sure it works multi-threaded for more sophisticated tests
Co-authored-by: Jan Musial <jan.musial@intel.com>
Signed-off-by: Michal Rakowski <michal.rakowski@intel.com>
Signed-off-by: Jan Musial <jan.musial@intel.com>
- Add cache trylock and read trylock functions.
- Introduce new error code -OCF_ERR_NO_LOCK.
- Change trylock functions in env to return this code in case of
lock contention.
[ENV CHANGES REQUIRED]
Following functions should return 0 on success or -OCF_ERR_NO_LOCK
in case of lock contention:
- env_mutex_trylock()
- env_rwsem_up_read_trylock()
- env_rwsem_up_write_trylock()
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
- Queue allocation is now separated from starting cache.
- Queue can be created and destroyed in runtime.
- All queue ops accept queue handle instead of queue id.
- Cache stores queues as list instead of array.
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
Instead of switching write policy to pass-through, barrier is rised
by incrementing counter in ocf_cache_t structure.
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
This may be used in logger implementations that need file
name or descriptor to initialize properly.
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
Propagate id of ocf_queue for discard io
This resolves the issue of
bottom adapter always getting an ocf_io with io_queue = 0,
no matter from which queue function to bottom adapter was called
This is a follow up on e69894e398
Signed-off-by: Vitaliy Mysak <vitaliy.mysak@intel.com>
This looks like during change from DIV_ROUND_UP to OCF_DIV_ROUND_UP
this one occurrence has been missed.
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
Propagate id of ocf_queue where it is possible
This resolves the issue of
bottom adapter always getting an ocf_io with io_queue = 0,
no matter from which queue function to bottom adapter was called
Signed-off-by: Vitaliy Mysak <vitaliy.mysak@intel.com>
Replace assembler code with C equivalent and slightly simplify
logic searching for first free core.
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
