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crimson/os/seastore/transaction_manager: don't demote dirty extents

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Signed-off-by: Xuehan Xu <xuxuehan@qianxin.com>
This commit is contained in:
Xuehan Xu 2026-07-28 12:42:59 +08:00
parent 6b6c8d4da3
commit b8f9beb9c1
1 changed files with 9 additions and 0 deletions
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9
src/crimson/os/seastore/transaction_manager.cc
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@ -604,6 +604,11 @@ TransactionManager::relocate_shadow_extent(
)->template cast<LogicalChildNode>();
} else {
extent = co_await std::move(v.get_child_fut());
if (extent->is_stable_dirty()) {
// the extent is dirty, skip it.
DEBUGT("skipping dirty extent: {}", t, *extent);
co_return LogicalChildNodeRef();
}
cache->retire_extent(t, extent);
}
if (auto shadow = extent->get_shadow(); shadow) {
@ -1607,6 +1612,10 @@ TransactionManager::demote_region(
if (it.has_shadow_val()) {
DEBUGT("demote shadow {}", t, it);
auto extent = co_await relocate_shadow_extent(t, it);
if (!extent) {
DEBUGT("{} can't be demoted", t, it);
continue;
}
ret.demoted_size += extent->get_length();
auto cursor = co_await lba_manager->demote_extent(
t, *it.direct_cursor, *extent);