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-rw-r--r--nix/libstore/gc.cc4
1 files changed, 3 insertions, 1 deletions
diff --git a/nix/libstore/gc.cc b/nix/libstore/gc.cc
index e1d0765154..16519116e4 100644
--- a/nix/libstore/gc.cc
+++ b/nix/libstore/gc.cc
@@ -606,7 +606,9 @@ void LocalStore::removeUnusedLinks(const GCState & state)
throw SysError(format("statting `%1%'") % path);
#endif
- if (st.st_nlink != 1) {
+ /* Drop links for files smaller than 'deduplicationMinSize', even if
+ they have more than one hard link. */
+ if (st.st_nlink != 1 && st.st_size >= deduplicationMinSize) {
actualSize += st.st_size;
unsharedSize += (st.st_nlink - 1) * st.st_size;
continue;