Date: Fri, 10 Oct 2008 17:14:56 +0200 From: Luigi Rizzo <rizzo@iet.unipi.it> To: current@freebsd.org Subject: setting bootverbose (or boothowto) from the kernel config file ? Message-ID: <20081010151456.GA27576@onelab2.iet.unipi.it>
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In a diskless setting which does not use /boot/loader, i need to control the value of 'bootverbose' to print extra debugging messages. I just learned that using this line in the kernel config file env "my_kenv_settings" and providing a list of var.name=value in the file my_kenv_settings, these values get dumped to compile/MYKERNEL/env.c and become accessible from the kernel through getenv() (e.g. i used this for machdep.bios.pnp). However i haven't found a way to set 'bootverbose', which is a sysctl variable (debug.bootverbose) so it seems to be in a different namespace. Any ideas ? Also, what is exactly the relation between the two variables 'boothowto' (apparently set through the loader and containing various flags) and 'bootverbose' (which is a sysctl) ? Different parts of the kernel use one or the other to control verbose output, and i am not sure if, e.g. setting RB_VERBOSE in 'boothowto' also sets bootverbose... thanks luigi
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