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Date:      Thu, 11 Mar 1999 16:17:48 -0500
From:      "Chuck O'Donnell" <cao@bus.net>
To:        freebsd-scsi@freebsd.org
Subject:   error messages from bt driver
Message-ID:  <19990311161748.D27999@milf18.bus.net>

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Has anyone seen anything like output attached below? It shows up
pretty much daily at 2:00 a.m. (specifically when the security script
runs `find' I think).

I have replaced the disk once and verified correct termination of the
SCSI bus.

I spent a while reading through bt(4) and bt.c, but I haven't been
able to diagnose anything from them. I am mostly interested to know if
it is a harmless diagnostic, buslogic hardware/firmware issue, or an
actual error condition.

I will be happy to do any research or whatever is necessary if someone
can point me in the right direction.

Thanks.

Chuck


Configuration:
-----
FreeBSD 3.1-STABLE #0: Sun Mar  7
bt0: BT-958 FW Rev. 5.07B Ultra Wide SCSI Host Adapter, SCSI ID 7, 192 CCBs
da0: <SEAGATE ST39173LW 5702> Fixed Direct Access SCSI-2 device 
da0: 20.000MB/s transfers (10.000MHz, offset 15, 16bit), \
	Tagged Queueing Enabled


Output:
-----
Mar  8 02:02:10 fern /kernel: bt0: Encountered busy mailbox with 191 out of 192 commands active!!!bt0: Encountered busy mailbox with 190 out of 192 commands active!!!bt0: Encountered busy mailbox with 189 out of 192 commands active!!!
Mar  8 02:02:10 fern /kernel: bt0: Encountered busy mailbox with 188 out of 192 commands active!!!bt0: Encountered busy mailbox with 187 out of 192 commands active!!!bt0: Encountered busy mailbox with 186 out of 192 commands active!!!bt0: Encountered busy mailbox with 185 out of 192 commands active!!!bt0: Encountered busy mailbox with 184 out of 192 commands active!!!bt0: Encountered busy mailbox with 183 out of 192 commands active!!!bt0: Encountered busy mailbox with 182 out of 192 commands active!!!bt0: Encountered busy mailbox with 181 out of 192 commands active!!!bt0: Encountered busy mailbox with 180 out of 192 commands active!!!bt0: Encountered busy mailbox with 179 out of 192 commands active!!!bt0: Encountered busy mailbox with 178 out of 192 commands active!!!bt0: Encountered busy mailbox with 177 out of 192 commands active!!!bt0: Encountered busy mailbox with 176 out of 192 commands active!!!bt0: Encountered busy mailbox with 175 out of 192 commands active!!!bt0: En!
 countered busy mailbox with 174 ou
t of 192 commands acti
Mar  8 02:02:10 fern /kernel: : Encountered busy mailbox with 173 out of 192 commands active!!!bt0: Encountered busy mailbox with 172 out of 192 commands active!!!
Mar  8 02:02:11 fern /kernel: bt0: btdone - Attempt to free non-active BCCB 0xf5511540
Mar  8 02:03:10 fern /kernel: (da0:bt0:0:0:0): CCB 0xf5510240 - timed out
Mar  8 02:03:27 fern /kernel: bt0: btdone - Attempt to free non-active BCCB 0xf550f3c0
Mar  8 02:03:27 fern /kernel: (da0:bt0:0:0:0): CCB 0xf5510240 - timed out
Mar  8 02:03:27 fern /kernel: bt0: No longer in timeout


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