Date: Fri, 15 Aug 2008 12:43:28 -0600 From: Scott Long <scottl@samsco.org> To: Ross <westr@connection.ca> Cc: freebsd-scsi@freebsd.org Subject: Re: isp(4) - setting debug mode flags Message-ID: <48A5CE50.4050404@samsco.org> In-Reply-To: <1051060505.20080815123014@connection.ca> References: <1051060505.20080815123014@connection.ca>
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Ross wrote:
> Has anyone successfully set the debug mode flags in the isp(4) drivers
> on boot for Freebsd 7.0?
>
> The man page states that setting "hint.isp.0.debug" should do the
> trick, but setting it to any value doesn't cause anything to happen.
>
> Checking the code shows isp_pci.c is doing a getenv_int("isp_debug",
> &bitmap), which looks like setting that kernel variable should do it,
> but still no go.
>
> So I'm wondering if anyone else got it working in the past, and if so,
> what did you set for maximum debugging?
>
> (Reason is that I'm trying to track down a bug that causes the kernel
> to crash occasionally on boot, in a boot-from-san configuration.)
>
> Cheers,
> Ross.
>
First thing to check is whether what you're setting is actually making
it into the kernel environment and is what you expect it to be. Run
'kenv' on a running system and look for the hint.isp.0.debug string.
Second, it looks like ISP_LOGDEBUG1 is the only flag that has any
special meaning, make sure you set that as well as ISP_LOGWARN and
ISP_LOGERR (the default flags).
Scott
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