Merge pull request ceph#55562 from Matan-B/wip-matanb-fix-lookup-purged-snaps

osd/SnapMapper: fix _lookup_purged_snap

Reviewed-by: Samuel Just <[email protected]>
Reviewed-by: Radoslaw Zarzynski <[email protected]>
Reviewed-by: Ronen Friedman <[email protected]>

Author: yuriw

src/osd/SnapMapper.cc

@@ -770,6 +770,10 @@ int SnapMapper::_lookup_purged_snap(
   decode(gotpool, p);
   decode(*begin, p);
   decode(*end, p);
+  if (gotpool != pool) {
+    dout(20) << __func__ << " got wrong pool " << gotpool << dendl;
+    return -ENOENT;
+  }
   if (snap < *begin || snap >= *end) {
     dout(20) << __func__ << " pool " << pool << " snap " << snap
 	     << " found [" << *begin << "," << *end << "), no overlap" << dendl;