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Zero superblock before writing metadata

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This is the first step towards atomic initialization of metadata
on cache disk.

Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
This commit is contained in:
Adam Rutkowski
2021-12-21 18:16:23 +01:00
parent c6644116ae
commit 196437f9bc
9 changed files with 141 additions and 2 deletions
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26
src/mngt/ocf_mngt_cache.c
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@@ -1476,6 +1476,30 @@ 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)
{
struct ocf_cache_attach_context *context = priv;
ocf_cache_t cache = context->cache;
if (error) {
ocf_cache_log(cache, log_err,
"ERROR: Failed to clear superblock\n");
OCF_PL_FINISH_RET(context->pipeline, -OCF_ERR_WRITE_CACHE);
}
ocf_pipeline_next(context->pipeline);
}
static void _ocf_mngt_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);
}
static void _ocf_mngt_attach_flush_metadata_complete(void *priv, int error)
{
struct ocf_cache_attach_context *context = priv;
@@ -1685,6 +1709,7 @@ struct ocf_pipeline_properties _ocf_mngt_cache_attach_pipeline_properties = {
OCF_PL_STEP(_ocf_mngt_init_cleaner),
OCF_PL_STEP(_ocf_mngt_init_promotion),
OCF_PL_STEP(_ocf_mngt_attach_init_instance),
OCF_PL_STEP(_ocf_mngt_zero_superblock),
OCF_PL_STEP(_ocf_mngt_attach_flush_metadata),
OCF_PL_STEP(_ocf_mngt_attach_discard),
OCF_PL_STEP(_ocf_mngt_attach_flush),
@@ -2139,6 +2164,7 @@ struct ocf_pipeline_properties _ocf_mngt_cache_standby_attach_pipeline_propertie
OCF_PL_STEP(_ocf_mngt_standby_init_cleaning),
OCF_PL_STEP(_ocf_mngt_standby_preapre_mempool),
OCF_PL_STEP(_ocf_mngt_standby_init_pio_concurrency),
OCF_PL_STEP(_ocf_mngt_zero_superblock),
OCF_PL_STEP(_ocf_mngt_attach_flush_metadata),
OCF_PL_STEP(_ocf_mngt_attach_discard),
OCF_PL_STEP(_ocf_mngt_attach_flush),