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Replace uuid/type pair with volume object in the device config

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It makes it possible to attach/load cache using volume types that have
non-standard constructors.

Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
This commit is contained in:
Robert Baldyga
2022-05-13 20:16:57 +02:00
committed by Jan Musial
parent 54b951fcdf
commit 8858e7344d
2 changed files with 21 additions and 98 deletions
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17
inc/ocf_mngt.h
View File

@@ -361,14 +361,17 @@ void ocf_mngt_cache_stop(ocf_cache_t cache,
*/
struct ocf_mngt_cache_device_config {
/**
* @brief Cache volume UUID
* @brief Cache volume
*
* The volume ownership is moved to the context of operation that takes
* this config. Thus the volume is being effectively moved using
* ocf_volume_move(), leaving the original volume uninitialized.
*
* Note that if the original volume was instantiated using *_create
* function, it still needs to be destroyed using ocf_volume_destroy()
* to deallocate the memory.
*/
struct ocf_volume_uuid uuid;
/**
* @brief Cache volume type
*/
uint8_t volume_type;
ocf_volume_t volume;
/**
* @brief If set, cache features (like discard) are tested

102
src/mngt/ocf_mngt_cache.c
View File

@@ -135,10 +135,6 @@ struct ocf_cache_attach_context {
* load or recovery
*/
bool uuid_copied : 1;
/*!< copied uuid data to context.
*/
bool metadata_frozen : 1;
/*!< metadata reference counter frozen
*/
@@ -790,7 +786,6 @@ static void _ocf_mngt_attach_cache_device(ocf_pipeline_t pipeline,
struct ocf_cache_attach_context *context = priv;
struct ocf_mngt_cache_device_config *device_cfg = &context->cfg.device;
ocf_cache_t cache = context->cache;
ocf_volume_type_t type;
int ret;
cache->device = env_vzalloc(sizeof(*cache->device));
@@ -799,20 +794,9 @@ static void _ocf_mngt_attach_cache_device(ocf_pipeline_t pipeline,
context->flags.device_alloc = true;
/* Prepare UUID of cache volume */
type = ocf_ctx_get_volume_type(cache->owner, device_cfg->volume_type);
if (!type) {
OCF_PL_FINISH_RET(pipeline,
-OCF_ERR_INVAL_VOLUME_TYPE);
}
ret = ocf_volume_init(&cache->device->volume, type,
&device_cfg->uuid, true);
if (ret)
OCF_PL_FINISH_RET(pipeline, ret);
cache->device->volume.cache = cache;
ocf_volume_move(&cache->device->volume, device_cfg->volume);
context->flags.volume_inited = true;
cache->device->volume.cache = cache;
/*
* Open cache device, It has to be done first because metadata service
@@ -1279,8 +1263,6 @@ uint64_t _ocf_mngt_calculate_ram_needed(ocf_cache_line_size_t line_size,
int ocf_mngt_get_ram_needed(ocf_cache_t cache,
struct ocf_mngt_cache_device_config *cfg, uint64_t *ram_needed)
{
ocf_volume_t volume;
ocf_volume_type_t type;
ocf_cache_line_size_t line_size;
uint64_t volume_size;
int result;
@@ -1289,26 +1271,15 @@ int ocf_mngt_get_ram_needed(ocf_cache_t cache,
OCF_CHECK_NULL(cfg);
OCF_CHECK_NULL(ram_needed);
type = ocf_ctx_get_volume_type(cache->owner, cfg->volume_type);
if (!type)
return -OCF_ERR_INVAL_VOLUME_TYPE;
result = ocf_volume_create(&volume, type, &cfg->uuid);
result = ocf_volume_open(cfg->volume, cfg->volume_params);
if (result)
return result;
result = ocf_volume_open(volume, cfg->volume_params);
if (result) {
ocf_volume_destroy(volume);
return result;
}
line_size = ocf_line_size(cache);
volume_size = ocf_volume_get_length(volume);
volume_size = ocf_volume_get_length(cfg->volume);
*ram_needed = _ocf_mngt_calculate_ram_needed(line_size, volume_size);
ocf_volume_close(volume);
ocf_volume_destroy(volume);
ocf_volume_close(cfg->volume);
return 0;
}
@@ -1479,34 +1450,6 @@ static void _ocf_mngt_init_attached_nonpersistent(ocf_pipeline_t pipeline,
ocf_pipeline_next(pipeline);
}
static void _ocf_mngt_copy_uuid_data(ocf_pipeline_t pipeline,
void *priv, ocf_pipeline_arg_t arg)
{
struct ocf_cache_attach_context *context = priv;
struct ocf_mngt_cache_device_config *device_cfg = &context->cfg.device;
void *data;
int result;
if (device_cfg->uuid.size == 0)
OCF_PL_NEXT_RET(pipeline);
data = env_vmalloc(device_cfg->uuid.size);
if (!data)
OCF_PL_FINISH_RET(pipeline, -OCF_ERR_NO_MEM);
result = env_memcpy(data, device_cfg->uuid.size, device_cfg->uuid.data,
device_cfg->uuid.size);
if (result) {
env_vfree(data);
OCF_PL_FINISH_RET(pipeline, -OCF_ERR_INVAL);
}
device_cfg->uuid.data = data;
context->flags.uuid_copied = true;
ocf_pipeline_next(pipeline);
}
static void _ocf_mngt_attach_check_ram(ocf_pipeline_t pipeline,
void *priv, ocf_pipeline_arg_t arg)
{
@@ -1799,6 +1742,8 @@ static void _ocf_mngt_attach_handle_error(
if (context->flags.volume_inited)
ocf_volume_deinit(&cache->device->volume);
else
ocf_volume_deinit(context->cfg.device.volume);
if (context->flags.front_volume_opened)
ocf_volume_close(&cache->device->front_volume);
@@ -1824,16 +1769,12 @@ static void _ocf_mngt_cache_attach_finish(ocf_pipeline_t pipeline,
void *priv, int error)
{
struct ocf_cache_attach_context *context = priv;
struct ocf_mngt_cache_device_config *device_cfg = &context->cfg.device;
if (error)
_ocf_mngt_attach_handle_error(context);
context->cmpl(context->cache, context->priv1, context->priv2, error);
if (context->flags.uuid_copied)
env_vfree(device_cfg->uuid.data);
ocf_pipeline_destroy(context->pipeline);
}
@@ -1841,7 +1782,6 @@ struct ocf_pipeline_properties _ocf_mngt_cache_attach_pipeline_properties = {
.priv_size = sizeof(struct ocf_cache_attach_context),
.finish = _ocf_mngt_cache_attach_finish,
.steps = {
OCF_PL_STEP(_ocf_mngt_copy_uuid_data),
OCF_PL_STEP(_ocf_mngt_init_attached_nonpersistent),
OCF_PL_STEP(_ocf_mngt_attach_cache_device),
OCF_PL_STEP(_ocf_mngt_init_properties),
@@ -1868,7 +1808,6 @@ struct ocf_pipeline_properties _ocf_mngt_cache_load_pipeline_properties = {
.priv_size = sizeof(struct ocf_cache_attach_context),
.finish = _ocf_mngt_cache_attach_finish,
.steps = {
OCF_PL_STEP(_ocf_mngt_copy_uuid_data),
OCF_PL_STEP(_ocf_mngt_init_attached_nonpersistent),
OCF_PL_STEP(_ocf_mngt_attach_cache_device),
OCF_PL_STEP(_ocf_mngt_init_properties),
@@ -2265,7 +2204,6 @@ struct ocf_pipeline_properties _ocf_mngt_cache_standby_attach_pipeline_propertie
.priv_size = sizeof(struct ocf_cache_attach_context),
.finish = _ocf_mngt_cache_attach_finish,
.steps = {
OCF_PL_STEP(_ocf_mngt_copy_uuid_data),
OCF_PL_STEP(_ocf_mngt_init_attached_nonpersistent),
OCF_PL_STEP(_ocf_mngt_attach_cache_device),
OCF_PL_STEP(_ocf_mngt_attach_read_properties),
@@ -2292,7 +2230,6 @@ struct ocf_pipeline_properties _ocf_mngt_cache_standby_load_pipeline_properties
.priv_size = sizeof(struct ocf_cache_attach_context),
.finish = _ocf_mngt_cache_attach_finish,
.steps = {
OCF_PL_STEP(_ocf_mngt_copy_uuid_data),
OCF_PL_STEP(_ocf_mngt_init_attached_nonpersistent),
OCF_PL_STEP(_ocf_mngt_attach_cache_device),
OCF_PL_STEP(_ocf_mngt_init_cache_front_volume),
@@ -2342,20 +2279,9 @@ static void _ocf_mngt_activate_set_cache_device(ocf_pipeline_t pipeline,
struct ocf_cache_attach_context *context = priv;
struct ocf_mngt_cache_device_config *device_cfg = &context->cfg.device;
ocf_cache_t cache = context->cache;
ocf_volume_type_t type;
int ret;
type = ocf_ctx_get_volume_type(cache->owner, device_cfg->volume_type);
if (!type) {
OCF_PL_FINISH_RET(pipeline,
-OCF_ERR_INVAL_VOLUME_TYPE);
}
ret = ocf_volume_init(&cache->device->volume, type,
&device_cfg->uuid, true);
if (ret)
OCF_PL_FINISH_RET(pipeline, ret);
ocf_volume_move(&cache->device->volume, device_cfg->volume);
cache->device->volume.cache = cache;
context->flags.volume_inited = true;
@@ -2467,6 +2393,8 @@ static void _ocf_mngt_activate_handle_error(
if (context->flags.volume_inited)
ocf_volume_deinit(&cache->device->volume);
else
ocf_volume_deinit(context->cfg.device.volume);
if (context->flags.volume_stored)
ocf_volume_move(&cache->device->volume, &context->cache_volume);
@@ -2479,7 +2407,6 @@ static void _ocf_mngt_cache_activate_finish(ocf_pipeline_t pipeline,
void *priv, int error)
{
struct ocf_cache_attach_context *context = priv;
struct ocf_mngt_cache_device_config *device_cfg = &context->cfg.device;
ocf_cache_t cache = context->cache;
ocf_pipeline_t stop_pipeline;
@@ -2504,12 +2431,9 @@ static void _ocf_mngt_cache_activate_finish(ocf_pipeline_t pipeline,
ocf_volume_deinit(&context->cache_volume);
}
out:
context->cmpl(context->cache, context->priv1, context->priv2, error);
if (context->flags.uuid_copied)
env_vfree(device_cfg->uuid.data);
ocf_pipeline_destroy(context->pipeline);
}
@@ -2517,7 +2441,6 @@ struct ocf_pipeline_properties _ocf_mngt_cache_activate_pipeline_properties = {
.priv_size = sizeof(struct ocf_cache_attach_context),
.finish = _ocf_mngt_cache_activate_finish,
.steps = {
OCF_PL_STEP(_ocf_mngt_copy_uuid_data),
OCF_PL_STEP(_ocf_mngt_activate_set_cache_device),
OCF_PL_STEP(_ocf_mngt_activate_init_properties),
OCF_PL_STEP(_ocf_mngt_activate_compare_superblock),
@@ -2864,10 +2787,7 @@ static int _ocf_mngt_cache_validate_cfg(struct ocf_mngt_cache_config *cfg)
static int _ocf_mngt_cache_validate_device_cfg(
struct ocf_mngt_cache_device_config *device_cfg)
{
if (!device_cfg->uuid.data)
return -OCF_ERR_INVAL;
if (device_cfg->uuid.size > OCF_VOLUME_UUID_MAX_SIZE)
if (!device_cfg->volume)
return -OCF_ERR_INVAL;
return 0;