Date: Tue, 23 Aug 2011 01:33:24 +0400 (MSD) From: Dmitry Morozovsky <marck@rinet.ru> To: Kostik Belousov <kostikbel@gmail.com> Cc: freebsd-scsi@freebsd.org, mav@freebsd.org Subject: Re: Documentating patch for defaults/loader.conf Message-ID: <alpine.BSF.2.00.1108230133080.26004@woozle.rinet.ru> In-Reply-To: <20110822210000.GW17489@deviant.kiev.zoral.com.ua> References: <alpine.BSF.2.00.1108222151140.8634@woozle.rinet.ru> <20110822194031.GR17489@deviant.kiev.zoral.com.ua> <alpine.BSF.2.00.1108230006530.26004@woozle.rinet.ru> <alpine.BSF.2.00.1108230055350.26004@woozle.rinet.ru> <20110822210000.GW17489@deviant.kiev.zoral.com.ua>
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On Tue, 23 Aug 2011, Kostik Belousov wrote:
> > > > > any objections for this simple patch?
> > > > >
> > > > > (we stumped into this yesterday, and no easy founded answers even on Google
> > > > > except the single FreeBSD Forums thread was found)
> > > >
> > > > I do not think that the wording in right, but I am not CAM expert by any
> > > > measure. From my reading of the code, it is a hook to delay the root mount,
> > > > not to delay CAM bus registration. It would be better if you get the scsi@
> > > > or mav@ (author of the tunable) review.
> > >
> > > I based the comment on existing comment to the tunable in cam_xpt.c:
> > >
> > > cam_xpt.c:TUNABLE_INT("kern.cam.boot_delay", &xsoftc.boot_delay);
> > > cam_xpt.c:SYSCTL_INT(_kern_cam, OID_AUTO, boot_delay, CTLFLAG_RDTUN,
> > > cam_xpt.c: &xsoftc.boot_delay, 0, "Bus registration wait time");
> > >
> > >
> > > Alexander, colleagues, your thought on the following patch?
> >
> > [reply by mav@ viewed on web archives, but lost somewhere]
> >
> > Well, what about the following wording then?
> >
> > marck@woozle:~/FreeBSD/svn/head/sys> svn diff
> > Index: boot/forth/loader.conf
> > ===================================================================
> > --- boot/forth/loader.conf (revision 224542)
> > +++ boot/forth/loader.conf (working copy)
> > @@ -109,6 +109,8 @@
> > #kern.ncallout="" # Set the maximum # of timer events
> > #kern.ngroups="1023" # Set the maximum # of supplemental groups
> > #kern.sgrowsiz="" # Set the amount to grow stack
> > +#kern.cam.boot_delay="10000" # Delay (in ms) for CAM bus registration,
> > + # useful for USB sticks as root
> Delay (in ms) of root mount for CAM bus registration, ...
>
> > #kern.cam.scsi_delay="2000" # Delay (in ms) before probing SCSI
> > #kern.ipc.maxsockets="" # Set the maximum number of sockets avaliable
> > #kern.ipc.nmbclusters="" # Set the number of mbuf clusters
I could not agree more! ;)
--
Sincerely,
D.Marck [DM5020, MCK-RIPE, DM3-RIPN]
[ FreeBSD committer: marck@FreeBSD.org ]
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*** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck@rinet.ru ***
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