Date: Sat, 13 Nov 2004 10:58:00 -0600 From: Tillman Hodgson <tillman@seekingfire.com> To: FreeBSD-Questions <freebsd-questions@freebsd.org> Subject: Re: Setting SCSI bus options before reaching fsck at boot time Message-ID: <20041113165800.GD33689@seekingfire.com> In-Reply-To: <20041113052818.GE37496@dan.emsphone.com> References: <20041113040749.GB33689@seekingfire.com> <20041113052818.GE37496@dan.emsphone.com>
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On Fri, Nov 12, 2004 at 11:28:18PM -0600, Dan Nelson wrote:
> In the last episode (Nov 12), Tillman Hodgson said:
> > I'd like to find a way to have camcontrol (or some other mechanism)
> > set the SCSI bus speed on this particular SCSI chain early in the
> > boot process, /before/ it encounters fsck and thus trips over it's
> > own feet in bus resets.
>
> Since camcontrol is in /sbin, you can just add a line to the top of
> /etc/rc. A cleaner solution would be to write a small /etc/rc.d/
> script and add a "BEFORE: fsck" line so it gets run before fsck.
That seemed like a reasonable approach, so I took a stab at it.
Unfortunately, I haven't worked with custom RCng scripts before and I
can't seem to get the script to run.
Here's what I have (blank lines removed to save some space):
#!/bin/sh
#
# PROVIDE: camcontrol_start
# REQUIRE: disks
# BEFORE: bgfsck
. /etc/rc.subr
name="camcontrol_tillman"
rcvar=`set rcvar`
start_cmd="camcontrol_start"
stop_cmd=":"
camcontrol_start()
{
echo -n "camcontrol_tillman has started "
echo -n "da0 "
camcontrol negotiate da0 -R10 -a -q
... (repeated for da1 through da6 (it's a 7 bay JBOD tower)) ...
info "camcontrol_tillman has finished"
}
load_rc_config $name
run_rc_command "$1"
I also have the following in /etc/rc.conf:
### Tillmans custom RCng scripts
camcontrol_tillman_enable="YES"
When I run the following by hand, it works:
root@thoth# camcontrol negotiate da6 | grep freq
(pass6:sym1:0:6:0): frequency: 20.000MHz
root@thoth# camcontrol negotiate da6 -R10 -q -a
root@thoth# camcontrol negotiate da6 | grep freq
(pass6:sym1:0:6:0): frequency: 10.000MHz
Yet when I run `/etc/rc.d/camcontrol_tillman start` (or even
forcestart), all I get is:
root@thoth# /etc/rc.d/camcontrol_tillman forcestart
# camcontrol_tillman
Aside from the echo statements not outputting anything, a quick check
confirms that it really didn't do anything:
root@thoth# camcontrol neg da5 | grep freq
(pass5:sym1:0:5:0): frequency: 20.000MHz
I'm assuming that I just don't understand something relatively simple
about the RCng system and that the script is missing something
relatively minor. Anyone care to enlighten me?
-T
--
"The important thing is not to stop questioning. Curiosity has its own reason
for existing."
-- Albert Einstein
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