Date: 12 Mar 2003 16:26:50 +0100 From: "G. van Dalum" <g.vandalum@student.utwente.nl> To: freebsd-stable@freebsd.org Subject: Re: USB storage devices and booting Message-ID: <1047482810.908.2.camel@server> In-Reply-To: <1047465545.1615.34.camel@server> References: <200303101424.h2AEOFQp038066@whizzo.transsys.com> <1047465545.1615.34.camel@server>
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i forgot: my system hangs and reboots when if i don't remove my usb flash memory drive after reattaching it guus On Wed, 2003-03-12 at 11:39, G. van Dalum wrote: > I tried to attach a usb storage device last week it did not work > correctly and i searched the net for a solution as i am a bit of a > newbee and i didn't want to ask stupid questions on this or other lists. > As i read the discussion on usb devices i thought my problem my be > relevant so here it is: > > when i attach a usb flash storage device to my computer before booting > it gets detected all right and i can mount it but reading and writing > doesn't work > vm_fault: pager read error, pid 1000 (cp) > i don't have any scsi devices attached to my system exept the umass > device > > when i detach it and reattach it i get these messages > umass0: BBB reset failed, TIMEOUT > umass0: BBB bulk-in clear stall failed, TIMEOUT > umass0: BBB bulk-out clear stall failed, TIMEOUT > > i have set sysctl kern.cam.da.no_6_byte=1 > > why is the usb device detected ok during boot and not after? > > Guus > > > > On Mon, 2003-03-10 at 15:24, Louis A. Mamakos wrote: > > While testing a fix to a USB driver a little while ago, I ran into a > > weird but explainable situation. Say, for example, you've got a FreeBSD > > system with one or more SCSI disks, and with the root partition on > > one of those disks. The loader passes along a hint as to which device > > the kernel should mount as the root partition, and away we go. > > > > Now, boot your system with a USB storage device attached. It seems > > to get bound as "da0" before the first SCSI drive has a chance to. > > This results in surprising behavior when you boot and it can't mount > > a root partition off the drive it thought it booted from. > > > > I suppose I could hardwire the SCSI drives in my kernel configuration, > > but that doesn't seem like the right answer. I don't normally boot > > with the USB storage thing plugged in, but it's possible that I might > > leave one attached and then have the system reboot while it's unattended > > and not come back. > > > > Is there a relative priority between the various drivers as they get > > device names allocated from (presumably) the CAM subsystem? > > > > louie > > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > > with "unsubscribe freebsd-stable" in the body of the message > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-stable" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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