Re: Unable to boot off USB Drive
On Thursday 15 July 2010 17:22:11 James Armstrong wrote: > On Thu, Jul 15, 2010 at 08:17, Hans Petter Selasky wrote: > > On Thursday 15 July 2010 15:49:37 James Armstrong wrote: > > > We're trying to boot a machine off a USB drive, and it looks like we're > > > getting a race condition. After going through post, we get the message > > > "FAILED TO MOUNT ROOT" and we enter the mountroot command screen, but > > > amidst that screen, we also get the post message identifying the disk, > > > with the notation that it has a 40.0MB transfer speed. > > > > > > At the mountroot prompt, entering "ufs:/dev/da0s1a" properly boots. > > > > > > It looks to me like the system is trying to mount root before the USB > > > drivers finish identifying all the devices, including the disk from > > > which we are booting. > > > > > > Have any of you seen this? Any suggestions on how we can correct this? > > > (As an interim, we're going to move the boot to a SATA drive, but we > > > want to use all the SATA ports for other purposes, so this means we're > > > sacrificing a SATA device.) > > > > Try to set this tunable to 5000, for example. > > > > kern.cam.boot_delay: 0 > > This was one of the first things we tried (set at 1). No joy. How did you set this variable? It should work. Do you see a 10 second delay at boot before mountroot? --HPS ___ freebsd-usb@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-usb To unsubscribe, send any mail to "freebsd-usb-unsubscr...@freebsd.org"
Re: Unable to boot off USB Drive
On Thu, Jul 15, 2010 at 08:17, Hans Petter Selasky wrote: > On Thursday 15 July 2010 15:49:37 James Armstrong wrote: > > We're trying to boot a machine off a USB drive, and it looks like we're > > getting a race condition. After going through post, we get the message > > "FAILED TO MOUNT ROOT" and we enter the mountroot command screen, but > > amidst that screen, we also get the post message identifying the disk, > > with the notation that it has a 40.0MB transfer speed. > > > > At the mountroot prompt, entering "ufs:/dev/da0s1a" properly boots. > > > > It looks to me like the system is trying to mount root before the USB > > drivers finish identifying all the devices, including the disk from which > > we are booting. > > > > Have any of you seen this? Any suggestions on how we can correct this? > > (As an interim, we're going to move the boot to a SATA drive, but we want > > to use all the SATA ports for other purposes, so this means we're > > sacrificing a SATA device.) > > > > Try to set this tunable to 5000, for example. > > kern.cam.boot_delay: 0 > > > This was one of the first things we tried (set at 1). No joy. ___ freebsd-usb@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-usb To unsubscribe, send any mail to "freebsd-usb-unsubscr...@freebsd.org"
Re: Unable to boot off USB Drive
On Thursday 15 July 2010 15:49:37 James Armstrong wrote: > We're trying to boot a machine off a USB drive, and it looks like we're > getting a race condition. After going through post, we get the message > "FAILED TO MOUNT ROOT" and we enter the mountroot command screen, but > amidst that screen, we also get the post message identifying the disk, > with the notation that it has a 40.0MB transfer speed. > > At the mountroot prompt, entering "ufs:/dev/da0s1a" properly boots. > > It looks to me like the system is trying to mount root before the USB > drivers finish identifying all the devices, including the disk from which > we are booting. > > Have any of you seen this? Any suggestions on how we can correct this? > (As an interim, we're going to move the boot to a SATA drive, but we want > to use all the SATA ports for other purposes, so this means we're > sacrificing a SATA device.) > Try to set this tunable to 5000, for example. kern.cam.boot_delay: 0 --HPS ___ freebsd-usb@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-usb To unsubscribe, send any mail to "freebsd-usb-unsubscr...@freebsd.org"
Unable to boot off USB Drive
We're trying to boot a machine off a USB drive, and it looks like we're getting a race condition. After going through post, we get the message "FAILED TO MOUNT ROOT" and we enter the mountroot command screen, but amidst that screen, we also get the post message identifying the disk, with the notation that it has a 40.0MB transfer speed. At the mountroot prompt, entering "ufs:/dev/da0s1a" properly boots. It looks to me like the system is trying to mount root before the USB drivers finish identifying all the devices, including the disk from which we are booting. Have any of you seen this? Any suggestions on how we can correct this? (As an interim, we're going to move the boot to a SATA drive, but we want to use all the SATA ports for other purposes, so this means we're sacrificing a SATA device.) James Armstrong ___ freebsd-usb@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-usb To unsubscribe, send any mail to "freebsd-usb-unsubscr...@freebsd.org"
