Buslogic errors

Version:   5.2-CURRENT FreeBSD 5.2-CURRENT #1: Tue Mar 30 10:50:07 PST 2004
Platform:  Supermicro PII/400 motherboard with Buslogic BT-956c
SCSI:      Buslogic BT-958 w/ four IBM DDRS-34560W S92A ("Ultrastar") disks
 

Controller boot message:

Mar 30 16:59:43 host1 kernel: bt0: <Buslogic Multi-Master SCSI Host Adapter>
port 0xeff4-0xeff7 mem 0xffaff000-0xffafffff irq 11 at device 20.0 on pci0
Mar 30 16:59:43 host1 kernel: bt0: BT-958 FW Rev. 5.07B Ultra Wide SCSI Host
Adapter, SCSI ID 7, 192 CCBs
Mar 30 16:59:43 host1 kernel: bt0: [GIANT-LOCKED]


Error:

Apr  6 03:03:46 host1 kernel: bt0: Encountered busy mailbox with 191 out of
192 commands active!!!
Apr  6 03:03:47 host1 kernel: bt0: Encountered busy mailbox with 190 out of
192 commands active!!!
Apr  6 03:03:47 host1 kernel: bt0: Encountered busy mailbox with 189 out of
192 commands active!!!
Apr  6 03:03:47 host1 kernel: bt0: Encountered busy mailbox with 188 out of
192 commands active!!!
Apr  6 03:03:47 host1 kernel: bt0: btdone - Attempt to free non-active BCCB
0xd2810400
Apr  6 03:04:46 host1 kernel: (da3:bt0:0:3:0): CCB 0xd2810cc0 - timed out
Apr  6 03:05:00 host1 kernel: bt0: btdone - Attempt to free non-active BCCB
0xd280e3c0
Apr  6 03:05:00 host1 kernel: (da3:bt0:0:3:0): CCB 0xd2810cc0 - timed out
Apr  6 03:05:00 host1 kernel: bt0: No longer in timeout
Apr  6 03:05:00 host1 kernel: (da0:bt0:0:0:0): WRITE(06). CDB: a c 15 3f 8 0 
Apr  6 03:05:00 host1 kernel: (da0:bt0:0:0:0): CAM Status: SCSI Status Error
Apr  6 03:05:00 host1 kernel: (da0:bt0:0:0:0): SCSI Status: Check Condition
Apr  6 03:05:00 host1 kernel: (da0:bt0:0:0:0): UNIT ATTENTION asc:29,0
Apr  6 03:05:00 host1 kernel: (da0:bt0:0:0:0): Power on, reset, or bus device
reset occurred
Apr  6 03:05:00 host1 kernel: (da0:bt0:0:0:0): Retrying Command (per Sense
Data)
Apr  6 03:05:00 host1 kernel: (da3:bt0:0:3:0): WRITE(06). CDB: a 1c 0 9f 20 0 
Apr  6 03:05:00 host1 kernel: (da3:bt0:0:3:0): CAM Status: SCSI Status Error
Apr  6 03:05:00 host1 kernel: (da3:bt0:0:3:0): SCSI Status: Check Condition
Apr  6 03:05:00 host1 kernel: (da3:bt0:0:3:0): UNIT ATTENTION asc:29,0
Apr  6 03:05:00 host1 kernel: (da3:bt0:0:3:0): Power on, reset, or bus device
reset occurred
Apr  6 03:05:00 host1 kernel: (da3:bt0:0:3:0): Retrying Command (per Sense
Data)
Apr  6 03:05:52 host1 kernel: (da1:bt0:0:1:0): READ(06). CDB: 8 1c 0 9f 20 0 
Apr  6 03:05:52 host1 kernel: (da1:bt0:0:1:0): CAM Status: SCSI Status Error
Apr  6 03:05:52 host1 kernel: (da1:bt0:0:1:0): SCSI Status: Check Condition
Apr  6 03:05:52 host1 kernel: (da1:bt0:0:1:0): UNIT ATTENTION asc:29,0
Apr  6 03:05:52 host1 kernel: (da1:bt0:0:1:0): Power on, reset, or bus device
reset occurred
Apr  6 03:05:52 host1 kernel: (da1:bt0:0:1:0): Retrying Command (per Sense
Data)
Apr  6 03:06:21 host1 kernel: (da2:bt0:0:2:0): WRITE(06). CDB: a 4 0 6f 8 0 
Apr  6 03:06:21 host1 kernel: (da2:bt0:0:2:0): CAM Status: SCSI Status Error
Apr  6 03:06:21 host1 kernel: (da2:bt0:0:2:0): SCSI Status: Check Condition
Apr  6 03:06:21 host1 kernel: (da2:bt0:0:2:0): UNIT ATTENTION asc:29,0
Apr  6 03:06:21 host1 kernel: (da2:bt0:0:2:0): Power on, reset, or bus device
reset occurred
Apr  6 03:06:21 host1 kernel: (da2:bt0:0:2:0): Retrying Command (per Sense
Data)


This was quite common ~5 years ago, but, was fixed.  The problem has
reappeared in 5.x-CURRENT and has recurred a number of times since
the system was booted.  So far, system has recovered without 
crashing.



==============================================================================
 Hugh LaMaster, M/S 233-21,    Email: lamaster_at_nas.nasa.gov
 NASA Ames Research Center     Or:    lamaster_at_nren.nasa.gov
 Moffett Field, CA 94035-1000  Or:    lamaster_at_kinkajou.arc.nasa.gov
 Phone: 650/604-1056           Disc:  Unofficial, personal *opinion*.
==============================================================================