From: "Yan, Zheng" <zheng.z.yan@xxxxxxxxx> open_remote_ino is racy, it's possible someone deletes the inode's last linkage while the MDS is discovering the inode. Signed-off-by: Yan, Zheng <zheng.z.yan@xxxxxxxxx> --- src/mds/MDCache.cc | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/src/mds/MDCache.cc b/src/mds/MDCache.cc index 24f1109..d730ff1 100644 --- a/src/mds/MDCache.cc +++ b/src/mds/MDCache.cc @@ -9225,8 +9225,15 @@ void MDCache::handle_discover(MDiscover *dis) if (dis->get_want_ino()) { // lookup by ino CInode *in = get_inode(dis->get_want_ino(), snapid); - if (in && in->is_auth() && in->get_parent_dn()->get_dir() == curdir) + if (in && in->is_auth() && in->get_parent_dn()->get_dir() == curdir) { dn = in->get_parent_dn(); + if (dn->state_test(CDentry::STATE_PURGING)) { + // set error flag in reply + dout(7) << "dentry " << *dn << " is purging, flagging error ino" << dendl; + reply->set_flag_error_ino(); + break; + } + } } else if (dis->get_want().depth() > 0) { // lookup dentry dn = curdir->lookup(dis->get_dentry(i), snapid); -- 1.7.11.7 -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html