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-rw-r--r--src/mds/Server.cc5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/mds/Server.cc b/src/mds/Server.cc
index 0c500cdfe63..de0916a644b 100644
--- a/src/mds/Server.cc
+++ b/src/mds/Server.cc
@@ -3206,6 +3206,11 @@ void Server::handle_client_setattr(MDRequest *mdr)
// log + wait
le->metablob.add_client_req(req->get_reqid(), req->get_oldest_client_tid());
+
+ // update backtrace for old format inode. (see inode_t::decode)
+ if (pi->backtrace_version == 0)
+ pi->update_backtrace();
+
mdcache->predirty_journal_parents(mdr, &le->metablob, cur, 0, PREDIRTY_PRIMARY, false);
mdcache->journal_dirty_inode(mdr, &le->metablob, cur);