statd

This daemon works with lockd to provide crash and recovery functions for the lock manager. It tracks the clients that hold locks on an NFS server. If a server crashes, on rebooting statd on the server contacts statd on the client. The client statd can then attempt to reclaim any locks on the server. The client statd also informs the server statd when a client has crashed, so that the client's locks on the server can be cleared. There are no options to select with this daemon. For more information see the statd(1M) man page.

In the Solaris 7 release, the way that statd keeps track of the clients has been improved. In all earlier Solaris releases, statd created files in /var/statmon/sm for each client using the client's unqualified host name. This caused problems if you had two clients in different domains that shared a hos tname, or if there were clients that were not resident in the same domain as the NFS server. Because the unqualified host name only lists the host name, without any domain or IP-address information, the older version of statd had no way to differentiate between these types of clients. To fix this problem, the Solaris 7 statd creates a symbolic link in /var/statmon/sm to the unqualified host name using the IP address of the client. The new link will look like:

# ls -l /var/statmon/sm
lrwxrwxrwx   1 root          11 Apr 29 16:32 ipv4.192.9.200.1 -> myhost
--w-------   1 root          11 Apr 29 16:32 myhost

In this example, the client host name is myhost and the clients' IP address is 192.9.200.1. If another host with the name myhost were mounting a file system, there would be two symbolic links to the host name.