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Implement bitmap-granular (4k) metadata & data checksums

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This commit is contained in:
Vitaliy Filippov
2023-07-13 01:49:45 +03:00
parent a0aac7eb2a
commit cc1f03971d
26 changed files with 738 additions and 174 deletions
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src/blockstore_rollback.cpp
+18 -5
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@@ -227,11 +227,7 @@ void blockstore_impl_t::erase_dirty(blockstore_dirty_db_t::iterator dirty_start,
journal.used_sectors.erase(dirty_it->second.journal_sector);
flusher->mark_trim_possible();
}
if (dsk.clean_entry_bitmap_size > sizeof(void*))
{
free(dirty_it->second.bitmap);
dirty_it->second.bitmap = NULL;
}
free_dirty_dyn_data(dirty_it->second);
if (dirty_it == dirty_start)
{
break;
@@ -240,3 +236,20 @@ void blockstore_impl_t::erase_dirty(blockstore_dirty_db_t::iterator dirty_start,
}
dirty_db.erase(dirty_start, dirty_end);
}
void blockstore_impl_t::free_dirty_dyn_data(dirty_entry & e)
{
if (e.dyn_data)
{
size_t dyn_size = dsk.dirty_dyn_size(e.len);
if (dyn_size > sizeof(void*) &&
(!journal.inmemory || e.dyn_data < journal.buffer ||
e.dyn_data >= journal.buffer + journal.len))
{
// dyn_data contains the bitmap and checksums
// free it if it doesn't refer to the in-memory journal
free(e.dyn_data);
}
e.dyn_data = NULL;
}
}