NFSRestart agent

The NFSRestart agent recovers NFS record locks after sudden reboots or crashes on clients and servers. This avoids file corruption and provides high availability for NFS record locks.

The agent starts rpc.lockd and rpc.statd, which are responsible to send notification after reading the nfs lock directory. The agent copies some records in nfs lock directory, which is used by the re-started lockd or statd daemons for notification.

The smsyncd daemon copies lock information from /var/statmon/sm to shared storage. The agent's online function copies the locks from shared storage to /var/statmon/sm.

If you have configured the NFSRestart agent for lock recovery, the NFSRestart agent starts the smsyncd daemon. The daemon copies the NFS locks from the shared-storage to the local directory (/var/lib/nfs) and vice-versa.

The NFSRestart agent brings online, takes offline, and monitors the three daemons: smsyncd, statd, and lockd.

If you have configured the NFSRestart agent for lock recovery, the NFSRestart agent starts the smsyncd daemon. The daemon copies the NFS locks from the shared-storage to the local directory (/var/statmon/sm) and vice-versa.

The NFSRestart agent brings online, takes offline, and monitors the three daemons: smsyncd, statd, and lockd.

For important information about this agent, refer to:

NFSRestart agent notes