On Monday 2008-05-12 14:16, Tetsuo Handa wrote:
>Hello.
>
>I'm trying to get a sysrq dump when the system hangs.
>But unfortunately, typing sysrq key from the keyboard
>doesn't work after the system hangs.
>So, I'm trying to get a sysrq dump by automatically
>writing to /proc/sysrq-trigger using a program.
(a) make sure sysrq-over-keyboard is enabled
(b) if the system does not react to sysrq, it is unlikely
it is servicing any processes at all
(c) try xt_SYSRQ (xtables-addons 1.5.5), to hopefully
trigger sysrq over the network (receive routine may run
in interrupt context).
>In other words, does invoking sysrq routine break or taint something?
No.