From: "Yan, Zheng" <zheng.z.yan@xxxxxxxxx>
We can avoid save parent snaprealm if current_parent_since is greater
than parent snaprealm's newest sequence.
Signed-off-by: Yan, Zheng <zheng.z.yan@xxxxxxxxx>
---
src/mds/CInode.cc | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/src/mds/CInode.cc b/src/mds/CInode.cc
index 8fed424..8566e55 100644
--- a/src/mds/CInode.cc
+++ b/src/mds/CInode.cc
@@ -386,8 +386,10 @@ void CInode::project_past_snaprealm_parent(SnapRealm *newparent)
if (newparent != oldparent) {
snapid_t oldparentseq = oldparent->get_newest_seq();
- new_snap->past_parents[oldparentseq].ino = oldparent->inode->ino();
- new_snap->past_parents[oldparentseq].first = new_snap->current_parent_since;
+ if (oldparentseq + 1 > new_snap->current_parent_since) {
+ new_snap->past_parents[oldparentseq].ino = oldparent->inode->ino();
+ new_snap->past_parents[oldparentseq].first = new_snap->current_parent_since;
+ }
new_snap->current_parent_since = MAX(oldparentseq, newparent->get_last_created()) + 1;
}
}
--
1.7.11.4
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