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-rw-r--r--src/libstore/gc.cc16
1 files changed, 9 insertions, 7 deletions
diff --git a/src/libstore/gc.cc b/src/libstore/gc.cc
index 2c75b16f6..e04e9c107 100644
--- a/src/libstore/gc.cc
+++ b/src/libstore/gc.cc
@@ -118,13 +118,15 @@ Path addPermRoot(const Path & _storePath, const Path & _gcRoot,
}
/* Check that the root can be found by the garbage collector. */
- Roots roots = store->findRoots();
- if (roots.find(gcRoot) == roots.end())
- printMsg(lvlError,
- format(
- "warning: `%1%' is not in a directory where the garbage collector looks for roots; "
- "therefore, `%2%' might be removed by the garbage collector")
- % gcRoot % storePath);
+ if (queryBoolSetting("gc-check-reachability", true)) {
+ Roots roots = store->findRoots();
+ if (roots.find(gcRoot) == roots.end())
+ printMsg(lvlError,
+ format(
+ "warning: `%1%' is not in a directory where the garbage collector looks for roots; "
+ "therefore, `%2%' might be removed by the garbage collector")
+ % gcRoot % storePath);
+ }
/* Grab the global GC root, causing us to block while a GC is in
progress. This prevents the set of permanent roots from