Date: Mon, 30 Mar 2009 10:14:05 -0700 From: Andrew Thompson <thompsa@FreeBSD.org> To: "Paul B. Mahol" <onemda@gmail.com> Cc: freebsd-current@freebsd.org, Nenhum_de_Nos <matheus@eternamente.info>, Robert Noland <rnoland@freebsd.org> Subject: Re: Booting from usb hard disk Message-ID: <20090330171405.GB44858@citylink.fud.org.nz> In-Reply-To: <3a142e750903301003o27369595gaee12b5f8232ac6@mail.gmail.com> References: <1237804575.1771.7.camel@balrog.2hip.net> <fd2392216bb33e5b66f8fe79459e45e2.squirrel@cygnus.homeunix.com> <1237884572.1771.28.camel@balrog.2hip.net> <20090330061036.GA83528@citylink.fud.org.nz> <3a142e750903300804r75d6ef81kae69cdfdb618b719@mail.gmail.com> <20090330162553.GA44858@citylink.fud.org.nz> <3a142e750903301003o27369595gaee12b5f8232ac6@mail.gmail.com>
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On Mon, Mar 30, 2009 at 06:03:33PM +0100, Paul B. Mahol wrote: > On 3/30/09, Andrew Thompson <thompsa@freebsd.org> wrote: > > On Mon, Mar 30, 2009 at 04:04:17PM +0100, Paul B. Mahol wrote: > >> On 3/30/09, Andrew Thompson <thompsa@freebsd.org> wrote: > >> > On Tue, Mar 24, 2009 at 03:49:32AM -0500, Robert Noland wrote: > >> >> On Mon, 2009-03-23 at 19:40 -0300, Nenhum_de_Nos wrote: > >> >> > > >> >> > I had problem a while ago with via mini itx hardware, that was quite > >> >> > close. If I try boot from usb (installed in usb hdd), I get to the > >> >> > point > >> >> > of loader not finding my disk. > >> >> > > >> >> > I then used a small flash disk attached to the ata (44 pin ide) > >> >> > channel > >> >> > and formatted /boot in there. this way I get to the point of mount > >> >> > root > >> >> > you said, and da0 not being alive soon enough to mount root. list > >> >> > disks > >> >> > also couldn't find da0 though. > >> >> > > >> >> > I tried current from that time, and no good. > >> >> > > >> >> > if this is solved, I'll be happy to try whatever patch to current. > >> >> > (as > >> >> > long as I can install it from another box/or its ata channel, as it > >> >> > can't > >> >> > boot vanilla 7.1R) > >> >> > >> >> So, my solution was to set kern.cam.scsi_delay=10000 > >> >> in /boot/loader.conf > >> > > >> > The following patch should work. It creates interleaving root hold > >> > tokens from the CAM probe to disk_create and geom providor tasting. > >> > I had to add a malloc type flag as sleeping isnt allowed at the point I > >> > added the token alloc in CAM. > >> > > >> > http://people.freebsd.org/~thompsa/root_wait.diff > >> > >> Hmm, this is supposed to fix issue when trying to boot from usb disk > >> with UP kernel? > > > > This is to address the issue where the usb disk hasnt been attached by > > the time the root filesystem is mounted. ie, you are booting from usb. > > > > If your problem is different then please say. > > On SMP booting from usb works (kern.cam.scsi_delay=2000), da0 will appear > after user is asked to enter root mount point, and pressing ? will show > ufs:da0s1a. On UP it doesnt work, ufs:da0s1a is not available. > I thought it may be related to scsi_delay but increasing it was not > solution. Well the patch should (hopefully) fix this and you will no longer need to set the scsi delay. Please test! :) Andrew
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