The fault of metadata server or abnormal state of HA leads to operation effect. It is no use to remount the client.
1. Login on metadata server as root account, run hastop command and close Heartbeat software.
2. Run wfs_inquire.sh ping_group command and check the two IP address related to “ping_group”. If the two nodes cannot be pinged, run wfs_modify.sh ping_group XXX YYY sepatately for twice, and modify the two examined IP address to the two switch IP. XXX is for foretime IP, YYY is for new IP.
3. Run service heartbeat start and restart heartbeat.
4. Start MDS service in ISM interface.
The fault of metadata server or abnormal state of HA, usually we suggest to restart HA service of MDS.
This operation is for the fault of metadata server or abnormal state of HA leads to operation effect and it is no use to remount the client.