kern/148540: geom_sched breaks ata devices

[Marcin Wisnicki]

>Number:         148540
>Category:       kern
>Synopsis:       geom_sched breaks ata devices
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Jul 13 10:10:00 UTC 2010
>Closed-Date:
>Last-Modified:
>Originator:     Marcin Wisnicki
>Release:        8.1-PRERELEASE
>Organization:
>Environment:
FreeBSD ghost.pnet.one.pl 8.1-PRERELEASE FreeBSD 8.1-PRERELEASE #3: Sun Jun  6 21:14:57 CEST 2010     root at ghost.pnet.one.pl:/home/obj/usr/src/sys/SERWER_DDB  i386
>Description:
Inserting geom_sched to ata(4) device causes this device to no longer respond to ata ioctls (atacontrol, smartctlm etc.).
CAM devices (at least umass) seem to work fine.
>How-To-Repeat:
# atacontrol mode ad0
current mode = UDMA133
# gsched insert -a rr ad0
GEOM_SCHED: Device ad0.sched. created.
# atacontrol mode ad0
atacontrol: ioctl(IOCATAGMODE): Inappropriate ioctl for device

>Fix:


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