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Implement overlay store deduplication.

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Ben Radford 2023-07-19 12:32:32 +01:00
parent a9510f9502
commit 8ddbcb736a
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2 changed files with 18 additions and 3 deletions
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18
src/libstore/local-overlay-store.cc
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@ -190,7 +190,23 @@ void LocalOverlayStore::deleteGCPath(const Path & path, uint64_t & bytesFreed)
void LocalOverlayStore::optimiseStore()
{
warn("not implemented");
Activity act(*logger, actOptimiseStore);
// Note for LocalOverlayStore, queryAllValidPaths only returns paths in upper layer
auto paths = queryAllValidPaths();
act.progress(0, paths.size());
uint64_t done = 0;
for (auto & path : paths) {
if (lowerStore->isValidPath(path)) {
// Deduplicate store path
deletePath(toUpperPath(path));
}
done++;
act.progress(done, paths.size());
}
}
bool LocalOverlayStore::verifyStore(bool checkContents, RepairFlag repair)

3
tests/overlay-local-store/optimise-inner.sh
View file

@ -45,8 +45,7 @@ overlayInode=$(stat -c %i "$overlayPath")
nix-store --store "$storeB" --optimise
remountOverlayfs
# Check path only exists in lower store
stat "$lowerPath"
stat "$overlayPath"
expect 1 stat "$upperPath"
#expect 1 stat $(toRealPath "$storeA/nix/store" "$path")