6 .Nd send servers control messages
9 .Ar <vfs|pm> Ar get Ar <request>
11 .Ar <vfs|pm> Ar set Ar <request> Ar <value>
15 utility allows to override the values of variables inside VFS or PM or to
16 retrieve the values of variables. The variables that are allowed to be
17 overridden are hard coded in the servers.
19 To retrieve how many threads are currently actively carrying out work in VFS:
20 .Bd -literal -offset indent
21 svrctl vfs get active_threads
24 To generate a stack trace of all threads in VFS:
25 .Bd -literal -offset indent
26 svrctl vfs get print_traces
29 To set verbosity level of VFS (allowed values range from 0 to 4)
30 .Bd -literal -offset indent
31 svrctl vfs set verbose 1
34 To retrieve boot monitor parameters (note that these are also available through
49 .Bd -literal -offset indent
50 svrctl pm get rootdevname
53 svrctl pm get bootopts
54 svrctl pm get cttyline
55 svrctl pm get cttybaud
60 is not properly invoked or the provided
62 is not valid 1 is returned, otherwise 0.