| watchdogd.8 (116874) | watchdogd.8 (126383) |
|---|---|
| 1.\" Copyright (c) 2004 Poul-Henning Kamp <phk@FreeBSD.org> |
|
| 1.\" Copyright (c) 2003 Sean M. Kelly <smkelly@FreeBSD.org> 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. --- 8 unchanged lines hidden (view full) --- 17.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23.\" SUCH DAMAGE. 24.\" | 2.\" Copyright (c) 2003 Sean M. Kelly <smkelly@FreeBSD.org> 3.\" All rights reserved. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 1. Redistributions of source code must retain the above copyright 9.\" notice, this list of conditions and the following disclaimer. --- 8 unchanged lines hidden (view full) --- 18.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24.\" SUCH DAMAGE. 25.\" |
| 25.\" $FreeBSD: head/usr.sbin/watchdogd/watchdogd.8 116874 2003-06-26 09:50:52Z smkelly $ | 26.\" $FreeBSD: head/usr.sbin/watchdogd/watchdogd.8 126383 2004-02-28 20:56:35Z phk $ |
| 26.\" 27.Dd June 25, 2003 28.Dt WATCHDOGD 8 29.Os 30.Sh NAME 31.Nm watchdogd | 27.\" 28.Dd June 25, 2003 29.Dt WATCHDOGD 8 30.Os 31.Sh NAME 32.Nm watchdogd |
| 32.Nd Software watchdog daemon | 33.Nd Watchdog daemon |
| 33.Sh SYNOPSIS 34.Nm 35.Op Fl d | 34.Sh SYNOPSIS 35.Nm 36.Op Fl d |
| 37.Op Fl e Ar cmd |
|
| 36.Op Fl I Ar file | 38.Op Fl I Ar file |
| 39.Op Fl s Ar sleep 40.Op Fl t Ar timeout |
|
| 37.Sh DESCRIPTION 38The 39.Nm | 41.Sh DESCRIPTION 42The 43.Nm |
| 40utility interfaces with the kernel's software watchdog facility to ensure | 44utility interfaces with the kernel's watchdog facility to ensure |
| 41that the system is in a working state. 42If 43.Nm 44is unable to interface with the kernel over a specific timeout, 45the kernel will take actions to assist in debugging or restarting the computer. 46.Pp | 45that the system is in a working state. 46If 47.Nm 48is unable to interface with the kernel over a specific timeout, 49the kernel will take actions to assist in debugging or restarting the computer. 50.Pp |
| 51If 52.Fl e Ar cmd 53is specified, 54.Nm 55will attempt to execute this command with 56.Xr system 3 57and only if the command returns with a zero exit code will the 58watchdog be reset. 59If 60.Fl e Ar cmd 61is not specified the daemon will perform a trivial filesystem 62check instead. 63.Pp 64The 65.Fl -s Ar sleep 66argument can be used to control the sleep period between each execution 67of the check and defaults to one second. 68.Pp 69The 70.Fl -t Ar timeout 71specifies the desired timeout period in seconds. 72.Pp |
|
| 47One possible circumstance which will cause a watchdog timeout is an interrupt 48storm. 49If this occurs, 50.Nm 51will no longer execute and thus the kernel's watchdog routines will take 52action after a configurable timeout. 53.Pp 54Upon receiving the --- 20 unchanged lines hidden (view full) --- 75will not fork into the background at startup. 76.El 77.Sh FILES 78.Bl -tag -width "/var/run/watchdogd.pid" -compact 79.It Pa /var/run/watchdogd.pid 80.El 81.Sh SEE ALSO 82.Xr watchdog 4 , | 73One possible circumstance which will cause a watchdog timeout is an interrupt 74storm. 75If this occurs, 76.Nm 77will no longer execute and thus the kernel's watchdog routines will take 78action after a configurable timeout. 79.Pp 80Upon receiving the --- 20 unchanged lines hidden (view full) --- 101will not fork into the background at startup. 102.El 103.Sh FILES 104.Bl -tag -width "/var/run/watchdogd.pid" -compact 105.It Pa /var/run/watchdogd.pid 106.El 107.Sh SEE ALSO 108.Xr watchdog 4 , |
| 83.Xr sysctl 8 | 109.Xr watchdog 8 , 110.Xr watchdog 9 , |
| 84.Sh AUTHORS 85.An -nosplit 86The 87.Nm 88utility and manual page were written by | 111.Sh AUTHORS 112.An -nosplit 113The 114.Nm 115utility and manual page were written by |
| 89.An Sean Kelly Aq smkelly@FreeBSD.org . | 116.An Sean Kelly Aq smkelly@FreeBSD.org 117and 118.An Poul-Henning Kamp Aq phk@FreeBSD.org . |
| 90.Pp 91Some contributions made by 92.An Jeff Roberson Aq jeff@FreeBSD.org . 93.Sh HISTORY 94The 95.Nm 96utility appeared in 97.Fx 5.1 . | 119.Pp 120Some contributions made by 121.An Jeff Roberson Aq jeff@FreeBSD.org . 122.Sh HISTORY 123The 124.Nm 125utility appeared in 126.Fx 5.1 . |