Date: Mon, 02 Jan 2012 12:58:35 +0100 From: Damien Fleuriot <ml@my.gd> To: Matt Mullins <mokomull@gmail.com> Cc: "freebsd-questions@FreeBSD.org" <freebsd-questions@freebsd.org> Subject: SOLVED - Re: KERNEL - knowing what programs use/need modules Message-ID: <4F019BEB.6050701@my.gd> In-Reply-To: <CAPyT1SH5tnXqUi_CiiJHuB-xCw12Zz4XKDkM68=C0HLiGjhcJw@mail.gmail.com> References: <4EF9F395.6030302@my.gd> <CAPyT1SH5tnXqUi_CiiJHuB-xCw12Zz4XKDkM68=C0HLiGjhcJw@mail.gmail.com>
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On 1/1/12 9:10 AM, Matt Mullins wrote: > On Tue, Dec 27, 2011 at 8:34 AM, Damien Fleuriot <ml@my.gd> wrote: >> Now, I'm wondering why in the world a server would need umass, ums and cam ? >> >> My understanding is that ums is the USB mouse, which we're never going >> to need. >> >> Umass would be USB mass storage, which again we're never going to need. > > You appear to be correct with these two. My gut tells me these types > of things would be loaded when the corresponding devices are plugged > into the system, but if that's wrong, surely someone here will speak > up. > >> Regarding CAM I have absolutely no idea why the module is loaded either. > > That's the SCSI/ATA subsystem; if this is the only of your firewalls > to have this module, perhaps it has different disk adapter hardware > than the others or another sysadmin decided to load it manually? > They use mfi, like a few others which do not have CAM loaded. The best part is, after rebooting these firewalls on their new 8.2-RELEASE-p5 kernel, they haven't loaded neither of UMS, UMASS, or CAM, although I've clearly built them: MODULES_OVERRIDE=cam geom/geom_label if_lagg linprocfs linsysfs linux mfi/mfi_linux usb/umass usb/ums I doubt another admin would have loaded them manually, they don't touch the "freebsd stuff" very often ;) Ah well, I guess I'll just leave it at that. For anyone reading this thread, Matt's suggestion of using lsof to find what files/binaries could be using the devices seems to be the best one. Ty for the input Matt.
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