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Zero metadata superblock on detach

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Metadata from a detached cache device is not meant to be loaded.

Signed-off-by: Daniel Madej <daniel.madej@huawei.com>
This commit is contained in:
Daniel Madej 2025-01-30 12:41:54 +01:00
parent c200c24344
commit 95c9c8987e
2 changed files with 42 additions and 15 deletions
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4
src/metadata/metadata_structs.h
View File

@ -1,5 +1,6 @@
/*
* Copyright(c) 2012-2022 Intel Corporation
* Copyright(c) 2025 Huawei Technologies
* SPDX-License-Identifier: BSD-3-Clause
*/
@ -21,9 +22,8 @@
* @brief Metadata shutdown status
*/
enum ocf_metadata_shutdown_status {
ocf_metadata_clean_shutdown = 1, /*!< OCF shutdown graceful*/
ocf_metadata_dirty_shutdown = 0, /*!< Dirty OCF shutdown*/
ocf_metadata_detached = 2, /*!< Cache device detached */
ocf_metadata_clean_shutdown = 1, /*!< OCF shutdown graceful*/
};
/**

53
src/mngt/ocf_mngt_cache.c
View File

@ -1,6 +1,6 @@
/*
* Copyright(c) 2012-2022 Intel Corporation
* Copyright(c) 2023-2024 Huawei Technologies
* Copyright(c) 2023-2025 Huawei Technologies
* SPDX-License-Identifier: BSD-3-Clause
*/
@ -1760,7 +1760,7 @@ static void _ocf_mngt_init_promotion(ocf_pipeline_t pipeline,
ocf_pipeline_next(pipeline);
}
static void _ocf_mngt_zero_superblock_complete(void *priv, int error)
static void _ocf_mngt_attach_zero_superblock_complete(void *priv, int error)
{
struct ocf_cache_attach_context *context = priv;
ocf_cache_t cache = context->cache;
@ -1774,14 +1774,14 @@ static void _ocf_mngt_zero_superblock_complete(void *priv, int error)
ocf_pipeline_next(context->pipeline);
}
static void _ocf_mngt_zero_superblock(ocf_pipeline_t pipeline,
static void _ocf_mngt_attach_zero_superblock(ocf_pipeline_t pipeline,
void *priv, ocf_pipeline_arg_t arg)
{
struct ocf_cache_attach_context *context = priv;
ocf_cache_t cache = context->cache;
ocf_metadata_zero_superblock(cache,
_ocf_mngt_zero_superblock_complete, context);
_ocf_mngt_attach_zero_superblock_complete, context);
}
static void _ocf_mngt_attach_flush_metadata_complete(void *priv, int error)
@ -2011,7 +2011,7 @@ struct ocf_pipeline_properties _ocf_mngt_cache_attach_pipeline_properties = {
OCF_PL_STEP(_ocf_mngt_attach_init_metadata),
OCF_PL_STEP(_ocf_mngt_attach_populate_free),
OCF_PL_STEP(_ocf_mngt_attach_init_services),
OCF_PL_STEP(_ocf_mngt_zero_superblock),
OCF_PL_STEP(_ocf_mngt_attach_zero_superblock),
OCF_PL_STEP(_ocf_mngt_attach_flush_metadata),
OCF_PL_STEP(_ocf_mngt_attach_discard),
OCF_PL_STEP(_ocf_mngt_attach_flush),
@ -2172,6 +2172,31 @@ static void ocf_mngt_cache_stop_unplug(ocf_pipeline_t pipeline,
ocf_mngt_cache_stop_unplug_complete, context);
}
static void _ocf_mngt_detach_zero_superblock_complete(void *priv, int error)
{
struct ocf_mngt_cache_unplug_context *context = priv;
ocf_cache_t cache = context->cache;
if (error) {
ocf_cache_log(cache, log_err,
"ERROR: Failed to clear the superblock on the detached device\n"
"The metadata on the device is in an invalid state"
" - manual superblock clearing is recommended.\n");
}
ocf_pipeline_next(context->pipeline);
}
static void _ocf_mngt_detach_zero_superblock(ocf_pipeline_t pipeline,
void *priv, ocf_pipeline_arg_t arg)
{
struct ocf_mngt_cache_unplug_context *context = priv;
ocf_cache_t cache = context->cache;
ocf_metadata_zero_superblock(cache,
_ocf_mngt_detach_zero_superblock_complete, context);
}
static void _ocf_mngt_cache_put_io_queues(ocf_cache_t cache)
{
ocf_queue_t queue, tmp_queue;
@ -2443,7 +2468,7 @@ struct ocf_pipeline_properties _ocf_mngt_cache_standby_attach_pipeline_propertie
OCF_PL_STEP(_ocf_mngt_attach_populate_free),
OCF_PL_STEP(_ocf_mngt_standby_prepare_mempool),
OCF_PL_STEP(_ocf_mngt_standby_init_pio_concurrency),
OCF_PL_STEP(_ocf_mngt_zero_superblock),
OCF_PL_STEP(_ocf_mngt_attach_zero_superblock),
OCF_PL_STEP(_ocf_mngt_attach_flush_metadata),
OCF_PL_STEP(_ocf_mngt_attach_discard),
OCF_PL_STEP(_ocf_mngt_attach_flush),
@ -3147,6 +3172,8 @@ static void _ocf_mngt_cache_unplug(ocf_cache_t cache, bool stop,
struct _ocf_mngt_cache_unplug_context *context,
_ocf_mngt_cache_unplug_end_t cmpl, void *priv)
{
struct ocf_mngt_cache_unplug_context *ctx = priv;
context->cmpl = cmpl;
context->priv = priv;
context->cache = cache;
@ -3157,14 +3184,13 @@ static void _ocf_mngt_cache_unplug(ocf_cache_t cache, bool stop,
__deinit_promotion_policy(cache);
if (!stop) {
/* Just set correct shutdown status */
ocf_metadata_set_shutdown_status(cache, ocf_metadata_detached,
_ocf_mngt_cache_unplug_complete, context);
} else {
/* Flush metadata */
ocf_metadata_flush_all(cache,
_ocf_mngt_cache_unplug_complete, context);
/* Skip metadata update - will be zeroed later in the detach pipeline */
OCF_PL_NEXT_RET(ctx->pipeline);
}
/* Flush metadata */
ocf_metadata_flush_all(cache,
_ocf_mngt_cache_unplug_complete, context);
}
static int _ocf_mngt_cache_load_core_log(ocf_core_t core, void *cntx)
@ -3850,6 +3876,7 @@ struct ocf_pipeline_properties ocf_mngt_cache_detach_pipeline_properties = {
OCF_PL_STEP(ocf_mngt_cache_stop_check_dirty),
OCF_PL_STEP(ocf_mngt_cache_detach_update_metadata),
OCF_PL_STEP(ocf_mngt_cache_detach_unplug),
OCF_PL_STEP(_ocf_mngt_detach_zero_superblock),
OCF_PL_STEP(ocf_mngt_cache_close_cache_volume),
OCF_PL_STEP(ocf_mngt_cache_deinit_metadata),
OCF_PL_STEP(ocf_mngt_cache_deinit_cache_volume),