usb/143790: can not boot from usb hdd

[Crazy Alex]

>Number:         143790
>Category:       usb
>Synopsis:       can not boot from usb hdd
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-usb
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Feb 11 08:00:01 UTC 2010
>Closed-Date:
>Last-Modified:
>Originator:     Crazy Alex
>Release:        8.0-STABLE-201001
>Organization:
Atlantis
>Environment:
FreeBSD  8.0-STABLE-201001 FreeBSD 8.0-STABLE-201001 #0: Mon Feb  8 20:44:06 YEKT 2010      root@:/usr/src/sys/i386/compile/ALEX_USB   i386
>Description:
I can not boot installed on the usb hdd (da0) system. An attempt to mount the root system is to define the system usb hdd:

Manual root filesystem specification:
  <fstype>:<device>  Mount <device> using filesystem <fstype>
                       eg. ufs:/dev/da0s1a
                       eg. cd9660:/dev/acd0
                       This is equivalent to: mount -t cd9660 /dev/acd0 /

  ?                  List valid disk boot devices
  <empty line>       Abort manual input

>How-To-Repeat:

>Fix:
edit /usr/src/sys/kern/vfs_mount.c

in 1655 line:

....
options = NULL;

+ pause("usbwait", hz * 10);

root_mount_prepare();

Add a pause of 10 seconds to mount the root filesystem during this time usb hdd will have time to define the system. Then recompile the kernel.






>Release-Note:
>Audit-Trail:
>Unformatted: