Introduce passive cache state
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
This commit is contained in:
Robert Baldyga
parent
ee42d9aaaf
commit
1fd9a448d4
@ -103,6 +103,15 @@ struct ocf_cache_info {
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*/
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ocf_volume_t ocf_cache_get_volume(ocf_cache_t cache);
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/**
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* @brief Obtain front volume from cache
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*
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* @param[in] cache Cache object
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*
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* @retval Volume, NULL if dettached.
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*/
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ocf_volume_t ocf_cache_get_front_volume(ocf_cache_t cache);
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/**
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* @brief Get name of given cache object
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*
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@ -124,6 +124,9 @@ typedef enum {
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ocf_cache_state_incomplete = 3, //!< ocf_cache_state_incomplete
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/*!< OCF cache has at least one inactive core */
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ocf_cache_state_passive = 4, //!< ocf_cache_state_passive
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/*!< OCF is currently in passive mode */
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ocf_cache_state_max //!< ocf_cache_state_max
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/*!< Stopper of cache state enumerator */
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} ocf_cache_state_t;
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@ -514,6 +514,28 @@ void ocf_mngt_cache_load(ocf_cache_t cache,
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struct ocf_mngt_cache_device_config *cfg,
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ocf_mngt_cache_load_end_t cmpl, void *priv);
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/**
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* @brief Completion callback of cache bind operation
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*
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* @param[in] cache Cache handle
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* @param[in] priv Callback context
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* @param[in] error Error code (zero on success)
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*/
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typedef void (*ocf_mngt_cache_bind_end_t)(ocf_cache_t cache,
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void *priv, int error);
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/**
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* @brief Bind cache instance
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*
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* @param[in] cache Cache handle
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* @param[in] cfg Caching device configuration
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* @param[in] cmpl Completion callback
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* @param[in] priv Completion callback context
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*/
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void ocf_mngt_cache_bind(ocf_cache_t cache,
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struct ocf_mngt_cache_device_config *cfg,
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ocf_mngt_cache_bind_end_t cmpl, void *priv);
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/* Adding and removing cores */
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/**
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@ -104,14 +104,20 @@ struct ocf_cache_attach_context {
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/*!< data structure allocated */
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bool volume_inited : 1;
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/*!< uuid for cache device is allocated */
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/*!< underlying device volume is initialized */
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bool volume_opened : 1;
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/*!< underlying device volume is open */
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bool front_volume_inited : 1;
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/*!< front volume is initialized */
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bool front_volume_opened : 1;
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/*!< front volume is open */
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bool attached_metadata_inited : 1;
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/*!< attached metadata sections initialized */
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bool device_opened : 1;
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/*!< underlying device volume is open */
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bool cleaner_started : 1;
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/*!< Cleaner has been started */
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@ -234,8 +240,10 @@ static void __setup_promotion_policy(ocf_cache_t cache)
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static void __deinit_promotion_policy(ocf_cache_t cache)
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{
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ocf_promotion_deinit(cache->promotion_policy);
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cache->promotion_policy = NULL;
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if (cache->promotion_policy) {
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ocf_promotion_deinit(cache->promotion_policy);
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cache->promotion_policy = NULL;
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}
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}
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static void __init_free(ocf_cache_t cache)
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@ -725,7 +733,7 @@ static void _ocf_mngt_attach_cache_device(ocf_pipeline_t pipeline,
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ocf_cache_log(cache, log_err, "ERROR: Cache not available\n");
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OCF_PL_FINISH_RET(pipeline, ret);
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}
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context->flags.device_opened = true;
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context->flags.volume_opened = true;
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context->volume_size = ocf_volume_get_length(&cache->device->volume);
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@ -1224,15 +1232,21 @@ static void _ocf_mngt_attach_handle_error(
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if (context->flags.attached_metadata_inited)
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ocf_metadata_deinit_variable_size(cache);
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if (context->flags.device_opened)
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ocf_volume_close(&cache->device->volume);
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if (context->flags.concurrency_inited)
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ocf_concurrency_deinit(cache);
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if (context->flags.volume_opened)
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ocf_volume_close(&cache->device->volume);
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if (context->flags.volume_inited)
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ocf_volume_deinit(&cache->device->volume);
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if (context->flags.front_volume_opened)
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ocf_volume_close(&cache->device->front_volume);
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if (context->flags.front_volume_inited)
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ocf_volume_deinit(&cache->device->front_volume);
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if (context->flags.device_alloc)
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env_vfree(cache->device);
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@ -1347,6 +1361,15 @@ static void _ocf_mngt_cache_set_valid(ocf_cache_t cache)
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env_bit_set(ocf_cache_state_running, &cache->cache_state);
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}
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static void _ocf_mngt_cache_set_passive(ocf_cache_t cache)
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{
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/*
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* Clear initialization state and set the passive bit.
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*/
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env_bit_clear(ocf_cache_state_initializing, &cache->cache_state);
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env_bit_set(ocf_cache_state_passive, &cache->cache_state);
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}
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static void _ocf_mngt_init_attached_nonpersistent(ocf_pipeline_t pipeline,
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void *priv, ocf_pipeline_arg_t arg)
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{
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@ -1918,6 +1941,101 @@ struct ocf_pipeline_properties ocf_mngt_cache_stop_pipeline_properties = {
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},
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};
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static void _ocf_mngt_init_cache_front_volume(ocf_pipeline_t pipeline,
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void *priv, ocf_pipeline_arg_t arg)
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{
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struct ocf_cache_attach_context *context = priv;
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ocf_cache_t cache = context->cache;
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ocf_volume_type_t type;
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struct ocf_volume_uuid uuid = {
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.data = cache,
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.size = sizeof(cache),
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};
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int result;
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type = ocf_ctx_get_volume_type_internal(cache->owner, OCF_VOLUME_TYPE_CACHE);
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if (!type)
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OCF_PL_FINISH_RET(context->pipeline, -OCF_ERR_INVAL);
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result = ocf_volume_init(&cache->device->front_volume, type, &uuid, false);
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if (result)
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OCF_PL_FINISH_RET(context->pipeline, result);
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context->flags.front_volume_inited = true;
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result = ocf_volume_open(&cache->device->front_volume, NULL);
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if (result)
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OCF_PL_FINISH_RET(context->pipeline, result);
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context->flags.front_volume_opened = true;
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ocf_pipeline_next(context->pipeline);
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}
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static void _ocf_mngt_load_unsafe_complete(void *priv, int error)
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{
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struct ocf_cache_attach_context *context = priv;
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ocf_cache_t cache = context->cache;
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if (error) {
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ocf_cache_log(cache, log_err,
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"ERROR: Cannot load metadata\n");
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OCF_PL_FINISH_RET(context->pipeline,
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-OCF_ERR_START_CACHE_FAIL);
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}
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ocf_pipeline_next(context->pipeline);
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}
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static void _ocf_mngt_load_metadata_unsafe(ocf_pipeline_t pipeline,
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void *priv, ocf_pipeline_arg_t arg)
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{
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struct ocf_cache_attach_context *context = priv;
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ocf_cache_t cache = context->cache;
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ocf_cache_log(cache, log_info, "Loading cache state...\n");
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ocf_metadata_load_unsafe(cache,
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_ocf_mngt_load_unsafe_complete, context);
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}
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static void _ocf_mngt_bind_init_attached_structures(ocf_pipeline_t pipeline,
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void *priv, ocf_pipeline_arg_t arg)
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{
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struct ocf_cache_attach_context *context = priv;
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ocf_cache_t cache = context->cache;
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init_attached_data_structures_recovery(cache);
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ocf_pipeline_next(context->pipeline);
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}
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static void _ocf_mngt_bind_post_init(ocf_pipeline_t pipeline,
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void *priv, ocf_pipeline_arg_t arg)
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{
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struct ocf_cache_attach_context *context = priv;
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ocf_cache_t cache = context->cache;
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ocf_refcnt_unfreeze(&cache->refcnt.metadata);
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ocf_pipeline_next(pipeline);
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}
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struct ocf_pipeline_properties _ocf_mngt_cache_bind_pipeline_properties = {
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.priv_size = sizeof(struct ocf_cache_attach_context),
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.finish = _ocf_mngt_cache_attach_finish,
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.steps = {
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OCF_PL_STEP(_ocf_mngt_copy_uuid_data),
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OCF_PL_STEP(_ocf_mngt_init_attached_nonpersistent),
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OCF_PL_STEP(_ocf_mngt_attach_cache_device),
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OCF_PL_STEP(_ocf_mngt_init_cache_front_volume),
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OCF_PL_STEP(_ocf_mngt_init_properties),
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OCF_PL_STEP(_ocf_mngt_attach_check_ram),
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OCF_PL_STEP(_ocf_mngt_test_volume),
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OCF_PL_STEP(_ocf_mngt_attach_prepare_metadata),
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OCF_PL_STEP(_ocf_mngt_load_metadata_unsafe),
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OCF_PL_STEP(_ocf_mngt_bind_init_attached_structures),
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OCF_PL_STEP(_ocf_mngt_bind_post_init),
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OCF_PL_STEP_TERMINATOR(),
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},
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};
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static void _ocf_mngt_cache_attach(ocf_cache_t cache,
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struct ocf_mngt_cache_device_config *cfg,
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@ -1985,6 +2103,51 @@ static void _ocf_mngt_cache_load(ocf_cache_t cache,
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OCF_PL_NEXT_RET(pipeline);
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}
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struct ocf_pipeline_properties
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ocf_mngt_cache_stop_passive_pipeline_properties = {
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.priv_size = sizeof(struct ocf_mngt_cache_stop_context),
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.finish = ocf_mngt_cache_stop_finish,
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.steps = {
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OCF_PL_STEP(ocf_mngt_cache_stop_wait_metadata_io),
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OCF_PL_STEP(ocf_mngt_cache_stop_deinit_metadata),
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OCF_PL_STEP(ocf_mngt_cache_stop_put_io_queues),
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OCF_PL_STEP_TERMINATOR(),
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},
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};
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static void _ocf_mngt_cache_bind(ocf_cache_t cache,
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struct ocf_mngt_cache_device_config *cfg,
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_ocf_mngt_cache_attach_end_t cmpl, void *priv1, void *priv2)
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{
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struct ocf_cache_attach_context *context;
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ocf_pipeline_t pipeline;
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int result;
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result = ocf_pipeline_create(&pipeline, cache,
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&_ocf_mngt_cache_bind_pipeline_properties);
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if (result)
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OCF_CMPL_RET(cache, priv1, priv2, -OCF_ERR_NO_MEM);
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result = ocf_pipeline_create(&cache->stop_pipeline, cache,
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&ocf_mngt_cache_stop_passive_pipeline_properties);
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if (result) {
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ocf_pipeline_destroy(pipeline);
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OCF_CMPL_RET(cache, priv1, priv2, -OCF_ERR_NO_MEM);
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}
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context = ocf_pipeline_get_priv(pipeline);
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context->cmpl = cmpl;
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context->priv1 = priv1;
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context->priv2 = priv2;
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context->pipeline = pipeline;
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context->cache = cache;
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context->cfg = *cfg;
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OCF_PL_NEXT_RET(pipeline);
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}
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static int _ocf_mngt_cache_validate_cfg(struct ocf_mngt_cache_config *cfg)
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{
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if (!strnlen(cfg->name, OCF_CACHE_NAME_SIZE))
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@ -2059,8 +2222,6 @@ int ocf_mngt_cache_start(ocf_ctx_t ctx, ocf_cache_t *cache,
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result = _ocf_mngt_cache_start(ctx, cache, cfg, priv);
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if (!result) {
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_ocf_mngt_cache_set_valid(*cache);
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ocf_cache_log(*cache, log_info, "Successfully added\n");
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ocf_cache_log(*cache, log_info, "Cache mode : %s\n",
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_ocf_cache_mode_get_name(ocf_cache_get_mode(*cache)));
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@ -2090,6 +2251,7 @@ static void _ocf_mngt_cache_attach_complete(ocf_cache_t cache, void *priv1,
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ocf_mngt_cache_attach_end_t cmpl = priv1;
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if (!error) {
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_ocf_mngt_cache_set_valid(cache);
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ocf_cache_log(cache, log_info, "Successfully attached\n");
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} else {
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ocf_cache_log(cache, log_err, "Attaching cache device "
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@ -2236,6 +2398,51 @@ void ocf_mngt_cache_load(ocf_cache_t cache,
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_ocf_mngt_cache_load(cache, cfg, _ocf_mngt_cache_load_complete, cmpl, priv);
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}
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static void _ocf_mngt_cache_bind_complete(ocf_cache_t cache, void *priv1,
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void *priv2, int error)
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{
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ocf_mngt_cache_bind_end_t cmpl = priv1;
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if (error)
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OCF_CMPL_RET(cache, priv2, error);
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_ocf_mngt_cache_set_passive(cache);
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ocf_cache_log(cache, log_info, "Successfully binded\n");
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OCF_CMPL_RET(cache, priv2, 0);
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}
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void ocf_mngt_cache_bind(ocf_cache_t cache,
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struct ocf_mngt_cache_device_config *cfg,
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ocf_mngt_cache_bind_end_t cmpl, void *priv)
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{
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int result;
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OCF_CHECK_NULL(cache);
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OCF_CHECK_NULL(cfg);
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if (!cache->mngt_queue)
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OCF_CMPL_RET(cache, priv, -OCF_ERR_INVAL);
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/* Bind is not allowed in volatile metadata mode */
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if (cache->metadata.is_volatile)
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OCF_CMPL_RET(cache, priv, -OCF_ERR_INVAL);
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/* Bind is not allowed with 'force' flag on */
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if (cfg->force) {
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ocf_cache_log(cache, log_err, "Using 'force' flag is forbidden "
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"for bind operation.");
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OCF_CMPL_RET(cache, priv, -OCF_ERR_INVAL);
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}
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result = _ocf_mngt_cache_validate_device_cfg(cfg);
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if (result)
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OCF_CMPL_RET(cache, priv, result);
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_ocf_mngt_cache_bind(cache, cfg, _ocf_mngt_cache_bind_complete,
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cmpl, priv);
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}
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static void ocf_mngt_cache_stop_detached(ocf_cache_t cache,
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ocf_mngt_cache_stop_end_t cmpl, void *priv)
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{
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@ -19,6 +19,11 @@ ocf_volume_t ocf_cache_get_volume(ocf_cache_t cache)
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return cache->device ? &cache->device->volume : NULL;
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}
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ocf_volume_t ocf_cache_get_front_volume(ocf_cache_t cache)
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{
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return cache->device ? &cache->device->front_volume : NULL;
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}
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int ocf_cache_set_name(ocf_cache_t cache, const char *src, size_t src_size)
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{
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int result;
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@ -101,6 +106,16 @@ int ocf_cache_get_info(ocf_cache_t cache, struct ocf_cache_info *info)
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cache->device->volume.type);
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info->size = cache->conf_meta->cachelines;
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}
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info->state = cache->cache_state;
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info->cache_line_size = ocf_line_size(cache);
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info->metadata_end_offset = ocf_cache_is_device_attached(cache) ?
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cache->device->metadata_offset / PAGE_SIZE : 0;
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info->metadata_footprint = ocf_cache_is_device_attached(cache) ?
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ocf_metadata_size_of(cache) : 0;
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if (env_bit_test(ocf_cache_state_passive, &cache->cache_state))
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return 0;
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info->core_count = cache->conf_meta->core_count;
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info->cache_mode = ocf_cache_get_mode(cache);
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@ -152,10 +167,6 @@ int ocf_cache_get_info(ocf_cache_t cache, struct ocf_cache_info *info)
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info->dirty_initial = initial_dirty_blocks_total;
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info->occupancy = cache_occupancy_total;
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info->dirty_for = _calc_dirty_for(dirty_since);
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info->metadata_end_offset = ocf_cache_is_device_attached(cache) ?
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cache->device->metadata_offset / PAGE_SIZE : 0;
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info->state = cache->cache_state;
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if (info->attached) {
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_set(&info->inactive.occupancy,
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@ -179,8 +190,6 @@ int ocf_cache_get_info(ocf_cache_t cache, struct ocf_cache_info *info)
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info->cleaning_policy = cache->conf_meta->cleaning_policy_type;
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info->promotion_policy = cache->conf_meta->promotion_policy_type;
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info->metadata_footprint = ocf_cache_is_device_attached(cache) ?
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ocf_metadata_size_of(cache) : 0;
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info->cache_line_size = ocf_line_size(cache);
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return 0;
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@ -26,6 +26,7 @@
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/* Cache device */
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struct ocf_cache_device {
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struct ocf_volume front_volume;
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struct ocf_volume volume;
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/* Hash Table contains contains pointer to the entry in
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Reference in New Issue
Block a user