ad8: FAILURE - device detached

[Steve Franks]

I'm really stumpped.  I have new sata cables, new disks, new
controller card.  Is my installation just corrupted somehow?  The
following happens sometime between 5 minutes and 2 hours after I boot,
and I occasionaly get a painc on shutdown (was always before new
cables)

Steve

ums0: Logitech Trackball, rev 1.10/2.20, addr 2, iclass 3/1
ums0: 3 buttons and Z dir.
Timecounter "TSC" frequency 2532633348 Hz quality 800
Timecounters tick every 1.000 msec
ad0: 157066MB <Hitachi HDS721616PLAT80 P22OA60A> at ata0-master UDMA133
acd0: DVDR <NEC DVD RW ND-3500AG/2.16> at ata1-master UDMA33
ad4: 157066MB <HDT722516DLA380 V43OA9BA> at ata2-master SATA150
ad6: 190782MB <SAMSUNG SP2004C VM100-49> at ata3-master SATA300
ad8: 157066MB <HDT722516DLA380 V43OA9BA> at ata4-master SATA150
ad10: 190782MB <SAMSUNG SP2004C VM100-49> at ata5-master SATA300
Trying to mount root from ufs:/dev/ad0s1a
WARNING: /raincloud was not properly dismounted
WARNING: /mnt/rsync/raincloud was not properly dismounted
WARNING: /mnt/rsync/rainstone was not properly dismounted
ad6: FAILURE - device detached
subdisk6: detached
ad6: detached
ad10: FAILURE - device detached
subdisk10: detached
ad10: detached
g_vfs_done():ad6s1[READ(offset=114688, length=16384)]error = 6
g_vfs_done():ad10s1[READ(offset=114688, length=16384)]error = 6
g_vfs_done():ad6s1[READ(offset=114688, length=16384)]error = 6
g_vfs_done():ad10s1[READ(offset=114688, length=16384)]error = 6
ad8: FAILURE - device detached
subdisk8: detached
ad8: detached
g_vfs_done():ad8s1[READ(offset=6160384, length=2048)]error = 6
g_vfs_done():ad10s1[READ(offset=114688, length=16384)]error = 6
ad4: FAILURE - device detached
subdisk4: detached
ad4: detached
g_vfs_done():ad4s1[READ(offset=6160384, length=2048)]error = 6
g_vfs_done():ad6s1[READ(offset=114688, length=16384)]error = 6