diff options
Diffstat (limited to 'sbin/dumpon/dumpon.8')
| -rw-r--r-- | sbin/dumpon/dumpon.8 | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/sbin/dumpon/dumpon.8 b/sbin/dumpon/dumpon.8 index a57dfef7096d..4e4abb8d4b79 100644 --- a/sbin/dumpon/dumpon.8 +++ b/sbin/dumpon/dumpon.8 @@ -25,7 +25,7 @@ .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" -.Dd April 23, 2020 +.Dd November 6, 2025 .Dt DUMPON 8 .Os .Sh NAME @@ -228,6 +228,20 @@ total amount of physical memory as reported by the .Va hw.physmem .Xr sysctl 8 variable. +.Sh SYSCTL VARIABLES +The following +.Xr sysctl 8 +variables can be used to modify or monitor the behavior of crash dumps: +.Bl -tag -width "machdep.dump_retry_count" +.It Va debug.minidump +Set the type of kernel crash dump. +Possible values are 0 for a full crash dump or 1 for a minidump. +The default is minidump. +.It Va machdep.dump_retry_count +The maximum number of times dump will retry before giving up. +The default value is 5. +This sysctl is only supported on PowerPC and AMD64. +.El .Sh IMPLEMENTATION NOTES Because the file system layer is already dead by the time a crash dump is taken, it is not possible to send crash dumps directly to a file. @@ -339,7 +353,7 @@ when binds to a server, .Xr dhclient-script 8 can be used to run -.Xr dumpon 8 . +.Nm . For example, to automatically configure .Xr netdump 4 on the vtnet0 interface, add the following to @@ -377,6 +391,7 @@ needed. .Xr loader 8 , .Xr rc 8 , .Xr savecore 8 , +.Xr sysctl 8 , .Xr swapon 8 , .Xr panic 9 .Sh HISTORY |