On Wed, Jun 10, 2009 at 04:15:30PM -0700, Randy Fishel wrote: > This morning I had the thought that maybe some or all of this > functionality could be handled by having a 'logger' provider in > dtrace. My needs are to have a lightweight non-volatile logging > mechansim that will continue to function while normal hardware I/O > channels are being stopped or powered off. But I considered that this > "feature" might be usefull to other consumers.
Have you looked at anonymous DTrace scripts? Those are used for tracing early in boot, and their results end up in a kernel-land buffer until retrieved from user-land once the system is up. You could use the same approach. One of the nice things about this is that if there's a panic you can always get at the buffered data using kmdb (if you can't use kmdb but can force a dump then you can always look at the data in the dump). Nico -- _______________________________________________ dtrace-discuss mailing list dtrace-discuss@opensolaris.org
