From: Xiubo Li <xiubli@xxxxxxxxxx>
In case the max_mds > 1 in MDS cluster and there is no any standby
MDS and all the max_mds MDSs are in up:active state, if one of the
up:active MDSs is dead, the m->m_num_laggy in kclient will be 1.
Then the mount will fail without considering other healthy MDSs.
Only when all the MDSs in the cluster are laggy will treat the
cluster as not be available.
Signed-off-by: Xiubo Li <xiubli@xxxxxxxxxx>
---
fs/ceph/mdsmap.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/ceph/mdsmap.c b/fs/ceph/mdsmap.c
index 471bac335fae..8b4f93e5b468 100644
--- a/fs/ceph/mdsmap.c
+++ b/fs/ceph/mdsmap.c
@@ -396,7 +396,7 @@ bool ceph_mdsmap_is_cluster_available(struct ceph_mdsmap *m)
return false;
if (m->m_damaged)
return false;
- if (m->m_num_laggy > 0)
+ if (m->m_num_laggy == m->m_num_mds)
return false;
for (i = 0; i < m->m_num_mds; i++) {
if (m->m_info[i].state == CEPH_MDS_STATE_ACTIVE)
--
2.21.0
